Aliyun How to create a snapshot

　　Aliyun How to create a snapshot

You can easily create snapshots of instances, retain the state of the system data at a point in time, either as a data backup, or as a mirror.

Description

Avoid snapshot creation at the peak of your business. Creating a snapshot of a disk can reduce the performance of the disk slightly. The immediate impact on you is that your business will have a short, instantaneous slowdown in creating snapshots, depending on how much your data changes.

Unlike an automatic snapshot, manually creating a snapshot is persisted if it is not actively deleted.

When a snapshot is created, the state of the server can only be run or stopped.

The operation is as follows:

Log on to the Cloud Server Management Console.

Click the disk in the left navigation. You can see a list of disks.

Select the disk where you want to create the snapshot. You can select only one disk at a time. It can be either a system disk or a data disk.

Click to create a snapshot.

Enter a name for the snapshot and click Confirm.

You can view all snapshots in a snapshot in the left navigation, or view a snapshot of an instance through an instance > this instance snapshot.

About the time required to create a snapshot

The disk capacity size affects when snapshots are created.

Because the first snapshot is a full snapshot, it takes a long time.

For disks that already have snapshots, it is relatively fast to create snapshots again, but the length of time depends on the amount of data changes between the previous snapshot and the amount of change, which takes longer.

Why the snapshot stopped abruptly

When a snapshot is created, the state of the server can only be run or stopped. If the snapshot has not yet been created, you stop, start, restart, and so on, and the snapshot does not continue to execute.

To solve this problem, the state change of the ECS instance needs to be sing Woo when the snapshot was first created. For example, when a snapshot is created, the instance is stopped, and the server needs to be stopped before the snapshot continues to be created.