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DDM UMN 1st v Reviewed-by: Wagner, Fabian <fabian.wagner@t-systems.com> Co-authored-by: proposalbot <proposalbot@otc-service.com> Co-committed-by: proposalbot <proposalbot@otc-service.com>
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37 lines
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:original_name: ddm_01_0007.html
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.. _ddm_01_0007:
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Regions and AZs
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===============
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Concepts
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--------
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The combination of a region and an availability zone (AZ) identifies the location of a data center. You can create resources in a specific AZ in a region.
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- A region is a geographic area where physical data centers are located. Each region is completely independent, improving fault tolerance and stability. After a resource is created, its region cannot be changed.
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- An AZ is a physical location using independent power supplies and networks. Faults in an AZ do not affect other AZs. A region can contain multiple AZs, which are physically isolated but interconnected through internal networks. This ensures the independence of AZs and provides low-cost and low-latency network connections.
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:ref:`Figure 1 <ddm_01_0007__fig18764197715>` shows the relationship between regions and AZs.
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.. _ddm_01_0007__fig18764197715:
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.. figure:: /_static/images/en-us_image_0000001733266557.png
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:alt: **Figure 1** Regions and AZs
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**Figure 1** Regions and AZs
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Selecting a Region
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------------------
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You are advised to select a region close to you or your target users. This reduces network latency and improves access rate.
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Selecting an AZ
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---------------
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When determining whether to deploy resources in the same AZ, consider your applications' requirements on disaster recovery (DR) and network latency.
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- For high DR capability, deploy resources in different AZs in the same region.
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- For low network latency, deploy resources in the same AZ.
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