What Are Regions and AZs?
A region and an availability zone (AZ) identify the location of a data center. You can create resources in a specific AZ of a region.
- Regions are defined in terms of geographical locations and network latencies. 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 common regions and dedicated regions. A common region provides common cloud services available to all tenants. A dedicated region provides services of a specific type or only for specific tenants.
- An AZ contains one or more physical data centers. Each AZ has independent cooling, fire extinguishing, moisture-proof, and electricity facilities. The 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 cross-AZ high-availability systems.
Figure 1 shows the relationship between regions and AZs.
HUAWEI CLOUD provides services worldwide. You can select a region and AZ as required. For more information, see HUAWEI CLOUD Global Regions.
What Are the Considerations for Selecting a Region?
When selecting a region, consider the following factors:
- Location
You are advised to select a region closest to your target users. This reduces network latency and improves access rate. However, there is no distinct difference between the infrastructure, BGP network quality, and resource operations and configurations in the same region/country. Therefore, you do not need to consider the network latency when selecting a region in a country.
- If you or your target users are in the Asia Pacific area excluding the Chinese mainland, select the CN-Hong Kong, AP-Bangkok, or AP-Singapore region.
- If you or your target users are in Africa, select the AF-Johannesburg region.
- If you or your target users are in Europe, select the EU-Paris region.
- Resource price
Resource prices may vary in different regions. For details, see Product Pricing Details.
What Are the Considerations for Selecting an AZ?
Consider the requirements for disaster recovery (DR) and network latency when selecting an AZ:
- Deploy resources in different AZs in the same region for DR purposes.
- Deploy resources in the same AZ for minimum latency.
How Do I Obtain an Endpoint?
When you use resources by using an API, you must specify its regional endpoint. For details about Huawei Cloud regions and endpoints, see Regions and Endpoints.
MRS Overview FAQs
- What Is MRS Used For?
- What Types of Distributed Storage Does MRS Support?
- What Are Regions and AZs?
- Can I Change the Network Segment of Nodes in an MRS Cluster?
- Can I Downgrade the Specifications of an MRS Cluster Node?
- Does an MRS Cluster Support Hive on Spark?
- Are Hive Components of Different Versions Compatible with Each Other?
- What Are the Differences Between OBS and HDFS in Data Storage?
- How Do I Obtain the Hadoop Pressure Test Tool?
- Statement About the Public IP Addresses in the Open-Source Third-Party SDK Integrated by MRS
- Does MRS Support Running Hive on Kudu?
- What Are the Solutions for Processing 1 Billion Data Records?
- Can I Change the IP address of DBService?
- Can Sudo Logs of Nodes in an MRS Cluster Be Cleared?
- What Are the Restrictions on the Storm Log Size in an MRS 2.1.0 Cluster?
- What Access Protocols Does Kafka Support?
- What Should I Do If Error 408 Is Reported When an MRS Node Accesses OBS?
- What are the advantages of the compression ratio of zstd?
- Which Python Versions Are Supported by Spark Tasks in MRS 3.1.0 Clusters?
- How Do I Enable Different Service Programs to Use Different Yarn Queues?
- What Are the Differences and Relationships Between the MRS Management Console and MRS Manager?
- How Do I Unbind an EIP from FusionInsight Manager of an MRS Cluster?
- What are the Operating Systems of Hosts in MRS Clusters of Different Versions?
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