What are the differences between AliCloud regions and zones ？ How to choose? Alibaba Cloud products cover seven regions in China, including North China 1, North China 2, North China 3, North China 5, East China 1, East China 2, and South China 1. According to cloud service security requirements, there are multiple zones in the same region, such as the North China 2 Beijing node, which is divided into seven zones. Next, the Weieis blog will explain in detail what Alibaba Cloud regions and availability zones are and how to choose them.
1. Where are AliCloud server regions
North China 1 Qingdao, North China 2 Beijing, North China 3 Zhangjiakou, North China 5 Hohhot, East China 1 Hangzhou, East China 2 Shanghai, South China 1 Shenzhen. These are the specific cities of each region. You should understand that the region refers to the physical machine room. When you purchase Alibaba Cloud services, you cannot change the region, so the region should also be selected correctly. Before buying Click me to get it Alibaba Cloud 1000 yuan voucher gift package, including Alibaba Cloud 100+products, starts with a deduction of 50 yuan.
2. How to select an AliCloud region
When selecting a region, you need to consider the region where the instance (that is, the purchased AliCloud product) is located, and the geographical location of you and your target users. To view more details of AliCloud regions, please go to AliCloud server 。
3. What are availability zones and the distribution of availability zones in different regions of Alibaba Cloud
Alibaba Cloud zone refers to a physical zone in which power and network are independent from each other in the same region. The network latency between instances in the same zone is smaller. For example, the East China 1 Hangzhou node, because Hangzhou is one of the earliest regions of Alibaba Cloud and one of the regions with the best construction level, Alibaba Cloud continues to increase the number of available zones in Hangzhou due to the increasing number of users and the requirements for disaster recovery backup.
In the same region, the intranet between zones can be interconnected, and fault isolation can be achieved between zones. Whether to place instances in the same zone depends on the requirements for disaster tolerance and network latency.
If your application requires high disaster tolerance, it is recommended that you deploy the instance in different zones in the same region. If your application requires low network latency between instances, it is recommended that you create instances in the same zone.
The following are the regions currently in use by Alibaba Cloud and the number of corresponding zones:
Chinese Mainland
| Regional name |
City |
Region ID |
Number of zones |
| North China 1 |
Qingdao |
cn-qingdao |
two |
| North China 2 |
Beijing |
cn-beijing |
seven |
| North China 3 |
Zhangjiakou |
cn-zhangjiakou |
two |
| North China 5 |
Hohhot |
cn-huhehaote |
one |
| East China 1 |
Hangzhou |
cn-hangzhou |
seven |
| East China 2 |
Shanghai |
cn-shanghai |
five |
| South China 1 |
Shenzhen |
cn-shenzhen |
four |
Other countries and regions
| Regional name |
City |
Region ID |
Number of zones |
| Hong Kong |
Hong Kong |
cn-hongkong |
two |
| Asia Pacific Southeast 1 |
Singapore |
ap-southeast-1 |
three |
| Asia Pacific Southeast 2 |
Sydney |
ap-southeast-2 |
two |
| Asia Pacific Southeast 3 |
Kuala Lumpur |
ap-southeast-3 |
two |
| Asia Pacific Southeast 5 |
Jakarta |
ap-southeast-5 |
one |
| Asia Pacific South 1 |
bombay |
ap-south-1 |
one |
| Asia Pacific Northeast 1 |
Tokyo |
ap-northeast-1 |
one |
| Western United States 1 |
silicon valley |
us-west-1 |
two |
| Eastern United States 1 |
Virginia |
us-east-1 |
two |
| Central Europe 1 |
Frankfurt |
eu-central-1 |
two |
| East Middle East 1 |
Dubai |
me-east-1 |
one |
It can be seen that in Alibaba Cloud's domestic region, there are seven nodes in East China, Hangzhou, and North China, and Beijing. It has a large cloud server room, and its stability and speed are among the best in China. Click me to get it Alibaba Cloud 1000 yuan voucher gift package, including Alibaba Cloud 100+products, starts with a deduction of 50 yuan.
4. How to select an AliCloud zone
When we purchase Alibaba Cloud servers, after selecting a region, we will also select a zone. Generally, zones are represented by letters such as A/B/C/D/E/F. The zones in the front are established early. When the machines in the zone are full and the available cloud services are sold out, we will continue to create new zones in the same region. The zones in the back are new, with lines The computer room will be better than those in earlier years.
Note: Self selected zones can only be selected in the option of custom purchase. In addition, the system randomly assigns zones in Alibaba Cloud One click purchase and nationwide cloud computing.
Generally speaking, the region is selected and cannot be changed. If you purchase a customized zone, you can choose your own. In addition, the system randomly allocates the zones in the same region. The zones in the same region are not far apart physically (all in the same city). With Alibaba Cloud's speed and stability, we don't need to worry about the performance gap between different zones, You just need to select the cloud service configuration and region that suits your current website needs Click me to get it Alibaba Cloud 1000 yuan voucher gift package, including Alibaba Cloud 100+products, starts with a deduction of 50 yuan, and then builds an environment to start operating the website, so that you can focus more on the website.
