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Big Data File Storage

Product Overview

Regions and availability zones

This document introduces the regions and availability zones supported by VolcanoEngine Cloud File Storage CloudFS to help you select a region and availability zone.

Background information

Before selecting a region and availability zone to purchase a CloudFS instance, you should first understand the basic definitions and related features of regions and availability zones.

Region: Refers to different geographic areas where data centers are located, usually divided according to the city where the data center is located. For example, the North China 2 (Beijing) region indicates that the data center is located in Beijing.

Availability zone: Refers to a physically isolated area within the same region, where power and network are independent. Availability zones are isolated from failures; a failure in one availability zone does not affect the normal operation of other availability zones.

tip

A region usually consists of multiple availability zones. Within the same region, different availability zones under the same private network can communicate over the intranet; availability zones in different regions are completely isolated.

The region and availability zone selected when purchasing a CloudFS instance cannot be changed after the instance is created.

The availability of resources in different regions may be adjusted at any time based on actual business usage, and there may be cases where resources are sold out and cannot be purchased. Please refer to the resources available on the console purchase page. If resources are sold out and cannot be purchased, you can try selecting a different availability zone and region to purchase.

How to choose

Considerations	Description
Network connectivity for multi-cloud products	When your Cloud File Storage CloudFS needs to connect to the network of other cloud products, it is recommended to deploy CloudFS and other cloud products in the same region and the same availability zone. This ensures that cloud products can communicate over the intranet, reducing access latency and improving access speed.
Network latency	To reduce access latency, it is recommended to purchase CloudFS instances in the Region closest to you. The closer you are to the instance Region, the lower the network latency and the faster the access speed. To achieve even lower latency, it is recommended to purchase CloudFS instances within the same Availability Zone.
High availability and disaster recovery	To achieve higher disaster recovery capability, it is recommended to deploy your business in different Availability Zones to ensure fault isolation between Availability Zones and enable cross-Availability Zone disaster recovery. tip It is recommended that you evaluate your business's actual needs and find the optimal balance between high availability and low latency.

List of regions and availability zones

Region	Number of availability zones	RegionID	ZoneID
China (Beijing)	2	cn-beijing	Availability zone A: cn-beijing-a Availability zone B: cn-beijing-b
China (Shanghai)	2	cn-shanghai	Availability Zone A: cn-shanghai-a Availability Zone B: cn-shanghai-b

Last updated: 2026.02.02 11:10:34