What Are the Relationships Between Edge Sites, Regions, and AZs?

What Is a Region and AZ?

A region and an availability zone (AZ) identify the location of a data center. You can create resources in a specific region and AZ.

• Regions are divided from the dimensions of geographical location and network latency. Public services, such as Elastic Cloud Server (ECS), Elastic Volume Service (EVS), Object Storage Service (OBS), Virtual Private Cloud (VPC), Elastic IP, and Image Management Service (IMS), are shared within the same cloud region.

  When you want an edge site to be deployed, you need to specify a region. The edge site will belong to the region you specify.

• There are two types of AZs.
  • A central AZ comprises of one or more physical data centers equipped with independent ventilation, fire, water, and electricity facilities. Computing, network, storage, and other resources in an AZ are logically divided into multiple clusters. AZs within a region are interconnected using high-speed optical fibers to allow you to build highly available systems across AZs.
  • An edge AZ is similar to a central AZ except that the edge AZ is deployed in an on-premises data center and is exclusive to a specific customer. Central AZs are deployed in cloud data centers and are shared by all users. Central AZs are deployed in the Huawei Cloud's data center and are shared by all central cloud users.

How Do I Select a Region?

When you select a region, consider the following factors:

• Location

  It is recommended that you select the closest region for lower network latency and quick access. If you have deployed workloads in a specific region, select this region for edge-cloud synergy.

• Resource price

  Resource prices may vary by region.

How Do I Select an AZ?

You do not need to select an AZ. You do not need to select an AZ. CloudPond edge sites are deployed in on-premises data centers, and each edge site works as an edge AZ.

Regions and Endpoints

When you use resources through API calls, you must specify its region and endpoint. For more details, see Regions and Endpoints.