What Are Regions and AZs?
Concept
A region and availability zone (AZ) identify the location of a data center. You can create resources in a specific region and AZ.
- Regions are divided based on 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 (EIP), and Image Management Service (IMS), are shared within the same region. Regions are classified into universal regions and dedicated regions. A universal region provides universal cloud services for common tenants. A dedicated region provides specific services 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, computing, network, storage, and other resources are logically divided into multiple clusters. AZs within a region are interconnected using high-speed optical fibers to support cross-AZ high-availability systems.
Figure 1 shows the relationship between regions and AZs.
HUAWEI CLOUD provides services in many regions around the world. Select a region and AZ based on requirements. For more information, see Global Products and Services.
Selecting a Region
When selecting a region, consider the following factors:
- Location
It is recommended that you select the closest region for low network latency and quick access. Regions within the Chinese mainland provide the same infrastructure, BGP network quality, as well as resource operations and configurations. Therefore, if your target users are on the Chinese mainland, you do not need to consider the network latency differences when selecting a region.
- If your target users are in Asia Pacific (excluding the Chinese mainland), select the CN-Hong Kong, AP-Bangkok, or AP-Singapore region.
- If your target users are in Africa, select the AF-Johannesburg region.
- If your target users are in Europe, select the EU-Paris region.
- If your target users are in Latin America, select the LA-Santiago region.
The LA-Santiago region is located in Chile.
- Resource price
Resource prices may vary in different regions. For details, see Product Pricing Details.
Selecting an AZ
When deploying resources, consider your applications' requirements on disaster recovery (DR) and network latency.
- For high DR capability, deploy resources in different AZs within the same region.
- For lower network latency, deploy resources in the same AZ.
Regions and Endpoints
Before you use an API to call resources, specify its region and endpoint. For more details, see Regions and Endpoints.
General Issues FAQs
- What Is ModelArts?
- What Are the Relationships Between ModelArts and Other Services?
- What Are the Differences Between ModelArts and DLS?
- How Do I Purchase or Enable ModelArts?
- How Do I Obtain an Access Key?
- How Do I Upload Data to OBS?
- What Do I Do If the System Displays a Message Indicating that the AK/SK Pair Is Unavailable?
- What Do I Do If a Message Indicating Insufficient Permissions Is Displayed When I Use ModelArts?
- How Do I Use ModelArts to Train Models Based on Structured Data?
- What Are Regions and AZs?
- How Do I View All Files Stored in OBS on ModelArts?
- Where Are Datasets of ModelArts Stored in a Container?
- Which AI Frameworks Does ModelArts Support?
- What Are the Functions of ModelArts Training and Inference?
- How Do I View an Account ID and IAM User ID?
- Can AI-assisted Identification of ModelArts Identify a Specific Label?
- How Does ModelArts Use Tags to Manage Resources by Group?
- How Do I View All ModelArts Monitoring Metrics in AOM?
- Why Is the Job Still Queued When Resources Are Sufficient?
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