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What Is AZ and How Can I Select One?

Updated at: Dec 16, 2019 GMT+08:00

AZ

An AZ is a physical region where resources use independent power sources and networks. An AZ is generally an independent physical equipment room, ensuring independence of the AZ.

Each region contains multiple AZs. If one AZ becomes faulty, the other AZs in the same region can still properly provide services.

AZs in the same region can communicate with each other over an intranet.

Selecting an AZ

You can purchase ECSs in different AZs as required. The failure of an AZ does not affect the running of ECSs in other AZs. Follow the rules when selecting AZs:

  • If only one AZ is available in a region, there is only one AZ in the region.
  • The AZ of a purchased ECS cannot be changed.
  • The AZs in one region can communicate with each other over an intranet.

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