How Do I Select a Region and AZ for a CBH Instance?
A region is a geographic area. Huawei has deployed data centers in multiple regions to provide services nationwide. Different regions are available for a service. It is recommended that you select the nearest region. For example, if you or your customers are located in Beijing, select a CN North region for low network latency and high service access rate.
CBH allows you to directly manage resources in the same VPC and region. Resources in the same VPC and region can directly communicate with each other.
VPCs in different regions or different VPCs in the same region cannot communicate with each other through the intranet. Therefore, when purchasing a CBH instance, you are advised to configure the CBH instances and related resources such as ECSs in the same VPC and region. In addition, you are advised to select the same region and AZ as those of the selected VPC when configuring the AZ for the instance to reduce network latency.
CBH also allows you to manage resources in different VPCs or regions. If your resources are deployed in different VPCs in the same region, you can use a VPC peering connection to establish a connection between two VPCs. If your resources are deployed in different regions, you can use Cloud Connect to build a cross-region network.
If you cannot select an AZ when purchasing a CBH instance, you can select another AZ in the same region. For example, if AZ1 in the CN South-Guangzhou region is not available, you can select AZ2 in the CN South-Guangzhou region.
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