What is an AliCloud ECS server ？ In practice, Weieis Blog often encounters newcomers who do not understand the concept of cloud ECS servers, and then ask everywhere what ECS is. So this article mainly shares terms and knowledge points related to ECS to help newcomers quickly go to the cloud.
1、 What is ECS?
ECS is Alibaba Cloud's name. Different businesses call ECS differently. For example, Amazon calls ECS AWS, and Tencent Cloud calls CVM. In fact, ECS refers to ECS. Unlike previous hardware servers, ECS is a server cluster composed of thousands of servers. Using ECS is as convenient and efficient as using water, electricity and gas at home. It is not necessary to purchase hardware equipment in advance, and then send it to the data center computer room. Instead, create the required number of ECS instances at any time according to business needs. During use, with the expansion of business, you can increase CPU, memory, disk and bandwidth at any time without downtime. If not, it can also release resources and save costs.
2、 Where is ECS good?
There are still some friends who have heard the above. In the past, when hardware servers were used, you had to run to the data center machine room, manually plug in memory modules after downtime, and then start debugging business. It was very troublesome. People have to travel long distances back and forth when they are away from home. They have to deal with the time and the computer room is not so easy to get in. They have to go through the formalities.
Let's take Alibaba Cloud's entry-level configuration: 1 core CPU, 1G memory, and 1M bandwidth as an example. AliCloud servers are generally selected from this configuration. When your business scale grows slowly and 1 core 1G can no longer meet the business needs, you can flexibly upgrade any configuration upward, such as upgrading to 1 core 2G memory, and other configurations remain unchanged; Or upgrade to one core, 2G memory and 2M bandwidth. So called elastic cloud computing, it can be upgraded and configured flexibly on demand. The whole operation process can be completed on the local computer, saving time and trouble.
3、 ECS related terms
Before using ECS, you should understand the following terms:
Example: Another name for ECS, including CPU, memory, cloud disk, operating system, network and other components.
Instance type: instance configuration, including CPU core number, memory size, bandwidth size, cloud disk size, network performance, etc. The instance type determines the computing and storage capacity of ECS instances. In plain speaking, how much work can you do.
Region and Availability Zone: refers to the physical location of the ECS instance.
Relevant data:
What are the differences between AliCloud regions and zones? How to choose?
AliCloud's 18 global node speed measurement domain names and how to select regional nodes
Security group: consists of instances with the same protection requirements and mutual trust in the same region. It is a virtual firewall used to set network access control for instances.
Reference: Alibaba Cloud ECS installed the pagoda but could not access the panel
Snapshot: refers to the backup of data stored in an elastic block at a certain point in time.
reference material: How do AliCloud ECS servers create snapshots?
AliCloud customized images enable server relocation
Network type:
VPC: an isolated network environment built on Alibaba Cloud, also known as VPC. VPCs are logically isolated from each other.
Relevant data: What is the difference between Alibaba Cloud VPC and classic networks?
Look at the figure below. Around ECS, you can add various server components to meet customers' multiple needs. This is all the resources involved in ECS, including instance types, block storage, images, snapshots, bandwidth, and security groups. In actual operation, ECS resources are generally configured through the ECS management console, AliCloud App, and API.
The above is a simple explanation of AliCloud ECS. Once you understand these contents, you will have a preliminary understanding of ECS.
4、 Introduction to AliCloud ECS
After understanding the concept above, let's share ECS suitable for novices.
Alibaba Cloud's national cloud computing specifications are divided into entry-level and performance balanced configurations. Alibaba Cloud calls an ECS instance. Lao Wei mentioned an instance here, which means that an ECS with a certain configuration is called differently.
1. Entry level configurations include 1 core 1G, 1 core 2G, and 2 core 4G:
The entry-level configuration is cheap, and is mainly used for learning experience, testing code, businesses that consume less resources, etc. Those who do not know how to optimize the server and reduce system consumption should not be greedy. For details, please move to Alibaba Cloud t5 instance with burst performance should be carefully used for long-term site establishment and Windows remote desktop 。
Related articles: Alibaba Cloud burst performance t5 instance server configuration, price list and how to select
Emphasize that if you do not understand server operation and maintenance, it is not recommended to use the burst performance instance in the production environment. The so-called production environment is the official use environment of your business. For example, you can set up personal blogs, small websites, etc., which are called production environments. Don't be greedy for bargains. The principle of "one price, one product" is particularly obvious on ECS.
2. The performance balancing configuration is divided into 1 core 1G, 1 core 2G, 2 core 4G, and 4 core 8G:
Shared instances are competing for system resources. Personal blogs and small flow websites are very affordable; The network enhanced instance can enjoy the system resources alone. Both of them have no restrictions on CPU performance. Relatively speaking, the computing network enhanced instance has more powerful performance and higher cost performance, and is suitable for high traffic services and enterprise level services.
Through the explanation of this article, we hope that you can have a certain understanding of Alibaba Cloud ECS servers, know what they are, what they are used for, and related terms. It is very beneficial for you to use AliCloud servers to build various services and businesses in the future. If you have questions, you can add a group in the upper right corner of the page to share your questions with everyone.
