Context
In conventional scaling, compute and storage resources are coupled. If a company scales out disks, it has to add unnecessary CPUs and memory at the same time. The scaling takes a long time and interrupts services. Disk capacity expansion can quickly increase storage without service interruption. You can increase disk space without having to stop services.
- Disk capacity expansion can be performed only for standard data warehouses using SSD. Only version 8.1.1.203 and later are supported.
- Disk capacity can be expanded only if the cluster is in Available, To be restarted, Read-only, or Node fault, Unbalanced state.
Precautions
- Hot storage disks cannot be scaled down.
- Scale up hot data storage during off-peak hours.
- If the cluster is in the read-only state, a message will be displayed after you click Expand Disk Capacity. After you start expansion, wait until it is completed and the cluster changes to the available state.
Procedure
- Log in to the GaussDB(DWS) management console.
- Choose Clusters > Dedicated Cluster. All clusters are displayed by default.
- In the Operation column of the target cluster, choose More > Change Specifications and click Change disk capacity. The Expand Disk Capacity page is displayed.
- Set the capacity and click Resize Cluster Now.
- Confirm the settings and click Submit.
- Return to the cluster list and check the disk capacity expansion progress.
