Region and AZ

Concepts

Regions and availability zones (AZs) identify the locations of data centers. You can create resources in regions and AZs.

• Regions are divided based on geographical locations 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 (EIP), and Image Management Service (IMS), are shared within the same region. Regions fall into two types: universal and dedicated. A universal region provides universal cloud services for common tenants. A dedicated region provides services of the same type only or for specific tenants.
• An AZ contains one or more physical data centers. Each AZ has independent cooling, fire extinguishing, moisture-proof, and electricity facilities. Within an AZ, compute, network, storage, and other resources are logically divided into multiple clusters allowing you to build high-availability systems.

Figure 1

Figure 1 Regions and AZs

Currently, Huawei Cloud provides services in many regions around the world. You can select regions and AZs as required. For more information, see Huawei Cloud Global Regions.

Selecting a Region

• Resource price

  Resource prices may vary in different regions. For details, see Product Pricing Details.

Selecting an AZ

When selecting a region to deploy resources, consider your applications' requirements on disaster recovery (DR) and network latency.

• For robust DR, deploy resources in different AZs within the same region.
• For a low network latency, deploy resources in the same AZ.