:original_name: dds_change_history.html

.. _dds_change_history:

Change History
==============

 
| Released On                       | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
 
| 2022-10-30                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  :ref:`DB Instance Status <dds_01_0026>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|                                   | -  :ref:`Changing a Single Node DB Instance Class <dds_03_0030>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
 
| 2022-06-16                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Added a warning about password risks when you connect to a DB instance.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|                                   | -  Added the description about the recycle bin principle in sections :ref:`Recycling a DB Instance <dds_03_0101>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|                                   | -  Modified the description of the backup policy in sections :ref:`Setting Automated Backup Policy <en-us_topic_backup_restore>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
 
| 2022-05-10                        | Added the description of database password.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
 
| 2022-04-14                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | :ref:`Method 2 <dds_03_0076__section1657925514410>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
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|                                   | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Added the description of driver in sections :ref:`System Architecture <dds_01_0021>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|                                   | -  Modified the error description in sections :ref:`Parameter Template Management <dds_03_0010>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|                                   | -  Added the tasks overviews in sections :ref:`Task Center <dds_03_0040>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
 
| 2022-03-29                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Modified the shard and mongos specifications in sections :ref:`Cluster <dds_01_0024__section87233314314>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|                                   | -  Added the description of adding or deleting tags in sections :ref:`Key Operations Recorded by CTS <dds_03_0029>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
 
| 2022-03-22                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | :ref:`Replica Set Instance <dds_faq_0013__section10677164802818>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
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|                                   | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Modified the description of the CIDR blocks in sections :ref:`Configuring Cross-CIDR Access for Replica Set Instances <dds_03_0100>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|                                   | -  Changed parameter group to parameter template.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
 
| 2021-07-15                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | -  :ref:`Viewing Parameter Change History <dds_03_0110>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|                                   | -  :ref:`Exporting a Parameter Template <dds_03_0111>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|                                   | -  :ref:`Applying a Parameter Template <dds_03_0014>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|                                   | -  :ref:`Viewing Application Records of a Parameter Template <dds_03_0113>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
 
| 2021-06-22                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Modified the description of the Administrator Password, Enterprise Project and AZ in sections :ref:`Creating a Cluster Instance <en-us_topic_0044018333>` , :ref:`Creating a Replica Set Instance <dds_02_0012>` and :ref:`Creating a Single Node Instance <dds_02_0023>`                                                                                                                                                                                                                                                                                                                                                                                                  |
|                                   | -  Modified the procedure of the setting a security group in sections :ref:`Setting a Security Group <dds_02_0022>` , :ref:`Setting a Security Group <dds_02_0049>` and :ref:`Setting a Security Group <dds_02_0024>`                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|                                   | -  Modified Commands and Descriptions about SSL in sections :ref:`Connecting to a Cluster Instance Over Private Networks <en-us_topic_0044018334>`, :ref:`Connecting to a Cluster Instance Over Public Networks <dds_02_0006>`, :ref:`Connecting to a Replica Set Instance Over Private Networks <en-us_topic_0105284966>`, :ref:`Connecting to a Replica Set Instance Over Public Networks <dds_02_0047>`, :ref:`Connecting to a Single Node Instance Over Private Networks <dds_02_0028>` and :ref:`Connecting to a Single Node Instance Over Public Networks <dds_02_0048>`                                                                                                |
|                                   | -  Added another method to obtain the SSL certificate, database port, and IP address in sections :ref:`Connecting to a Cluster Instance Over Private Networks <en-us_topic_0044018334>`, :ref:`Connecting to a Cluster Instance Over Public Networks <dds_02_0006>`, :ref:`Connecting to a Replica Set Instance Over Private Networks <en-us_topic_0105284966>`, :ref:`Connecting to a Replica Set Instance Over Public Networks <dds_02_0047>`, :ref:`Connecting to a Single Node Instance Over Private Networks <dds_02_0028>` and :ref:`Connecting to a Single Node Instance Over Public Networks <dds_02_0048>`                                                           |
|                                   | -  Modified the Text Structure in sections :ref:`Changing the DB Instance Class <en-us_topic_0000001159335385>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|                                   | -  Removed description about version 4.0.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
 
| 2021-04-13                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | -  :ref:`Single Node Architecture <dds_01_0025>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|                                   | -  :ref:`Getting Started with Single Nodes <dds_02_single_node>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
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|                                   | -  The Storage Space for Creating a DB Instance in section :ref:`Creating a Cluster Instance <en-us_topic_0044018333>` and :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|                                   | -  Password Descriptions in section :ref:`Creating a Database Account Using Commands <dds_03_0057>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
 
| 2021-03-29                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | Supported Cross-CIDR Access in section :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
 
| 2021-03-24                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | :ref:`Configuring Cross-CIDR Access for Replica Set Instances <dds_03_0100>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
 
| 2020-10-15                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Supported a maximum of 20 tags for each instance in sections :ref:`Creating a Cluster Instance <en-us_topic_0044018333>`, :ref:`Creating a Replica Set Instance <dds_02_0012>`, and :ref:`Tag Management <dds_03_0023>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|                                   | -  Supported a maximum of 16 mongos and 16 shards in a cluster instance in sections :ref:`Cluster <dds_01_0011>`, :ref:`Cluster <dds_01_0002>`, :ref:`Creating a Cluster Instance <en-us_topic_0044018333>`, and :ref:`Adding Nodes to a Cluster <en-us_topic_increase_nodes>`.                                                                                                                                                                                                                                                                                                                                                                                               |
|                                   | -  Optimized the procedures based on the Connections tab in sections :ref:`Binding an EIP <dds_02_0046>`, :ref:`Binding an EIP <dds_02_0053>`, :ref:`Enabling or Disabling SSL <dds_03_0074>`, :ref:`Changing the Database Port <dds_03_change_database_port>`, and :ref:`Changing a Security Group <dds_03_change_security_group>`.                                                                                                                                                                                                                                                                                                                                          |
 
| 2019-11-07                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | Supported DB instances that are compatible with MongoDB 3.4 Community Edition in sections :ref:`Database Engine and Version <dds_01_0014>`, :ref:`Creating a Cluster Instance <en-us_topic_0044018333>`, :ref:`Creating a Replica Set Instance <dds_02_0012>`, and :ref:`How Can I Install a MongoDB Client? <dds_faq_0018>`                                                                                                                                                                                                                                                                                                                                                  |
 
| 2019-09-16                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Added the description of disabling OBS Browser certificate verification and the procedure for enabling the certificate verification in section :ref:`Downloading Backup Files <en-us_topic_backup_download>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
 
| 2019-08-19                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | -  :ref:`Binding an EIP <dds_02_0046>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|                                   | -  :ref:`Binding an EIP <dds_02_0053>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
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|                                   | -  Supported binding and unbinding an EIP to or from a cluster or replica set instance in sections :ref:`Overview <dds_02_0010>`, :ref:`Constraints and Recommendations <dds_01_0022>`, :ref:`Creating a Cluster Instance <en-us_topic_0044018333>`, :ref:`Connecting to a Cluster Instance Over Private Networks <en-us_topic_0044018334>`, :ref:`Overview <dds_02_0057>`, :ref:`Constraints and Recommendations <dds_01_0022>`, :ref:`Creating a Replica Set Instance <dds_02_0012>`, :ref:`Connecting to a Replica Set Instance Over Private Networks <en-us_topic_0105284966>`, :ref:`Migrating Data <dds_03_0052>`, :ref:`Key Operations Recorded by CTS <dds_03_0029>`. |
|                                   | -  Added the procedure for disabling certificate verification on OBS Browser in section :ref:`Downloading Backup Files <en-us_topic_backup_download>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
 
| 2019-07-24                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Modified the description of the DB instance status **Changing private IP address** in section :ref:`DB Instance Status <dds_01_0026>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|                                   | -  Modified the description of **AZ** in section :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
 
| 2019-07-17                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Supported the deployment of a replica set instance across three AZs in sections :ref:`Regions and AZs <dds_01_0027>` and :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|                                   | -  Optimized the description of the parameter group status **In-Sync** in section :ref:`DB Instance Status <dds_01_0026>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|                                   | -  Modified the description of the **DB Instance Type** parameter in section :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|                                   | -  Optimized the description and steps in :ref:`Manually Switching the Primary and Secondary Nodes of a Replica Set <dds_03_0050>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|                                   | -  Optimized the description and steps in :ref:`Migrating Data <dds_03_0052>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|                                   | -  Optimized the application scenarios in section :ref:`Task Center <dds_03_0040>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|                                   | -  Optimized figures in this document.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
 
| 2019-07-03                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | -  :ref:`Manually Switching the Primary and Secondary Nodes of a Replica Set <dds_03_0050>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|                                   | -  :ref:`Changing a Cluster DB Instance Class <en-us_topic_0104472218>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|                                   | -  :ref:`Changing a Replica Set DB Instance Class <en-us_topic_0104721795>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|                                   | -  :ref:`Task Center <dds_03_0040>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
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|                                   | -  Modified DB instance statuses in section :ref:`DB Instance Status <dds_01_0026>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
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|                                   | -  Modified the parameter description of DB instance class and the description of subnet in sections :ref:`Creating a Cluster Instance <en-us_topic_0044018333>` and :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|                                   | -  Added the description of the parameter group in sections :ref:`Creating a Cluster Instance <en-us_topic_0044018333>`, :ref:`Creating a Replica Set Instance <dds_02_0012>`, and :ref:`Adding Nodes to a Cluster <en-us_topic_increase_nodes>`.                                                                                                                                                                                                                                                                                                                                                                                                                             |
|                                   | -  Updated the procedures for buying, restarting, deleting, backing up, and restoring a DB instance, and managing parameter groups, and operations related to storage space, security groups, tags, task centers, and monitoring metrics.                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|                                   | -  Moved the subsection "Managing Database Accounts" from section *Getting Started* to :ref:`Creating a Database Account Using Commands <dds_03_0057>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|                                   | -  Moved the subsection "Migrating Data" in section *Getting Started* to :ref:`Migrating Data <dds_03_0052>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|                                   | -  Divided chapter "Getting Started" into sections :ref:`Getting Started with Clusters <dds_02_cluster>` and :ref:`Getting Started with Replica Sets <dds_02_replica_set>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
 
| 2019-03-12                        | Accepted in OTC-4.0/Agile.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
 
| 2019-02-15                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Modified the description of the **Tags** parameter in sections :ref:`Creating a Cluster Instance <en-us_topic_0044018333>` and :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|                                   | -  Optimized the tag scenario in section :ref:`Tag Management <dds_03_0023>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|                                   | -  Deleted the description of specification confirmation in sections :ref:`Adding Nodes to a Cluster <en-us_topic_increase_nodes>` and :ref:`Scaling Up Storage Space <en-us_topic_increase_storage>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
 
| 2019-01-31                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Added parameter **Tags** in sections :ref:`Creating a Cluster Instance <en-us_topic_0044018333>` and :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|                                   | -  Supported retaining backups for a maximum of 732 days in section :ref:`Setting Automated Backup Policy <en-us_topic_backup_restore>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
 
| 2018-12-29                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | -  :ref:`Changing a Security Group <dds_03_change_security_group>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|                                   | -  :ref:`Downloading Backup Files <en-us_topic_backup_download>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
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|                                   | -  Added parameter **SSL** in :ref:`Creating a Cluster Instance <en-us_topic_0044018333>` and :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
 
| 2018-10-08                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Modified the command for connecting to a DB instance using SSL and added the description in section :ref:`Connecting to a Cluster Instance Over Private Networks <en-us_topic_0044018334>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|                                   | -  Modified the note in section :ref:`Replica Set <dds_01_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|                                   | -  Accepted in OTC-3.2.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
 
| 2018-09-10                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Deleted the release numbers and retained the release dates only in accordance with the unified public cloud style.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|                                   | -  Modified the description about the parameter group quotas in section :ref:`Creating a Parameter Template <en-us_topic_parameter_group>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
 
| 2018-08-31                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Supported case-sensitive manual backup names in section :ref:`Creating a Manual Backup <dds_03_0007>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|                                   | -  Modified commands supported and restricted by DDS in section :ref:`Which Commands are Supported or Restricted by DDS? <dds_03_0033>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
 
| 2018-08-17                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Modified the description of high-availability replica sets in section :ref:`Replica Set <dds_01_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|                                   | -  Modified the description about the parameter group quotas in section :ref:`Creating a Manual Backup <dds_03_0007>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|                                   | -  Optimized the description of the step following the successful creation of a DB instance in sections :ref:`Creating a Cluster Instance <en-us_topic_0044018333>` and :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|                                   | -  Changed **HA Type** to **DB Instance Type** displayed on the page for creating a DB instance, optimized the buttons of the warning dialog box of restart and delete operations, and synchronized the changes to the document.                                                                                                                                                                                                                                                                                                                                                                                                                                              |
 
| 2018-08-03                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | -  :ref:`Replica Set <dds_01_0012>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|                                   | -  :ref:`Creating a Replica Set Instance <dds_02_0012>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|                                   | -  :ref:`Restoring a Replica Set Instance from a Backup <dds_03_0043>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|                                   | -  :ref:`What Is the Time Delay for Primary/Secondary Synchronization in a Replica Set? <dds_faq_0006>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|                                   | -  :ref:`Tag Management <dds_03_0023>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
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|                                   | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Supported the creation of the replica set DB instance in sections :ref:`Changing a DB Instance Name <dds_03_0075>`, :ref:`Restarting a DB Instance or a Node <dds_03_0003>`, :ref:`Deleting a DB Instance <dds_03_0004>`, :ref:`Setting Automated Backup Policy <en-us_topic_backup_restore>`, :ref:`Creating a Manual Backup <dds_03_0007>`, :ref:`Deleting a Manual Backup <dds_03_0008>`, :ref:`Deleting an Automated Backup <dds_03_0009>`, :ref:`Scaling Up Storage Space <en-us_topic_increase_storage>`, :ref:`Connection Management <dds_03_0019>`, and :ref:`DDS Metrics <dds_03_0026>`.                                                                          |
|                                   | -  Supported disk encryption in sections :ref:`Creating a Cluster Instance <en-us_topic_0044018333>` and :ref:`Creating a Replica Set Instance <dds_02_0012>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|                                   | -  Changed the length of the instance name to 4 to 64 characters in sections :ref:`Creating a Cluster Instance <en-us_topic_0044018333>`, :ref:`Creating a Replica Set Instance <dds_02_0012>`, and :ref:`Changing a DB Instance Name <dds_03_0075>`.                                                                                                                                                                                                                                                                                                                                                                                                                         |
|                                   | -  Supported the batch querying of error logs of all nodes, all mongos, all shards, and all configs of a cluster instance and supported the querying of error logs of all nodes of a replica set instance in section :ref:`Error Log <en-us_topic_error_log>`.                                                                                                                                                                                                                                                                                                                                                                                                                |
|                                   | -  Supported the batch querying of slow query logs of all nodes of a replica set instance in section :ref:`Slow Query Log <en-us_topic_slow_query_log>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
 
| 2018-07-03                        | Accepted in OTC-3.1.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
 
| 2018-06-27                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | -  :ref:`Deleting an Automated Backup <dds_03_0009>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
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|                                   | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Changed the number of days for retaining automated backups and the restriction on the backup cycle in section :ref:`Setting Automated Backup Policy <en-us_topic_backup_restore>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
 
| 2018-06-21                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Modified the procedure for creating a DB instance and fixed the storage space of config at 20 GB in section :ref:`Creating a Cluster Instance <en-us_topic_0044018333>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|                                   | -  Supported the enabling or disabling the automated backup policy in section :ref:`Setting Automated Backup Policy <en-us_topic_backup_restore>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|                                   | -  Moved the subsection "Monitoring" in chapter "Managing DDS DB Instances" to a new section :ref:`Monitoring and Alarm Reporting <dds_03_0025>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
 
| 2018-06-04                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Modified the description of disk encryption and detailed the description of the HA type and storage type in section :ref:`Creating a Cluster Instance <en-us_topic_0044018333>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|                                   | -  Modified the description of the **pwd** parameter in section :ref:`Creating a Database Account Using Commands <dds_03_0057>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
 
| 2018-05-04                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | -  :ref:`Creating a Database Account Using Commands <dds_03_0057>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|                                   | -  :ref:`Reverting and Deleting Failed Cluster Instance Nodes <dds_03_0018>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Supported disk encryption, enabled the setting of DB instance name on the page for creating a DB instance, and changed the range of the config storage space in section :ref:`Creating a Cluster Instance <en-us_topic_0044018333>`.                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|                                   | -  Supported the deletion of node that fails to be added in section :ref:`Adding Nodes to a Cluster <en-us_topic_increase_nodes>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|                                   | -  Supported the viewing of slow logs of all shards in section :ref:`Slow Query Log <en-us_topic_slow_query_log>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|                                   | -  Modified commands supported and restricted by DDS in section :ref:`Which Commands are Supported or Restricted by DDS? <dds_03_0033>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
 
| 2018-03-09                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Modified the description of DDS and changed its location in section :ref:`What Is DDS? <en-us_topic_introduction>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|                                   | -  Added the tag editing function in section :ref:`Tag Management <dds_03_0023>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
 
| 2018-02-23                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | -  :ref:`Tag Management <dds_03_0023>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
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|                                   | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Added the description in section :ref:`Setting Automated Backup Policy <en-us_topic_backup_restore>`: If you set the retention period to one or more days, the backup policy is enabled and a full automated backup is triggered instantly.                                                                                                                                                                                                                                                                                                                                                                                                                                |
 
| 2018-02-19                        | Accepted in OTC-3.0.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
 
| 2018-02-09                        | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Optimized commands in sections :ref:`Connecting to a Cluster Instance Over Private Networks <en-us_topic_0044018334>` and :ref:`Migrating Data <dds_03_0052>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
 
| 2018-02-02                        | Added the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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|                                   | -  :ref:`Glossary <dds_glossary>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
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|                                   | Modified the following content:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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|                                   | -  Added the description of DDS in section :ref:`What Is DDS? <en-us_topic_introduction>`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|                                   | -  Modified the definition of cluster in section :ref:`Cluster <dds_01_0011>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|                                   | -  Modified the description of the automated backup policy in section :ref:`Setting Automated Backup Policy <en-us_topic_backup_restore>`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|                                   | -  Modified the description of effect on backups when instances and cloud account are deleted in sections :ref:`Deleting a DB Instance <dds_03_0004>` and :ref:`Will My Backups Be Deleted If I Delete My Cloud Account? <dds_faq_0008>`                                                                                                                                                                                                                                                                                                                                                                                                                                      |
 
| 2018-01-30                        | This issue is the first official release.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
 
