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I would like to share with you the details of the automatic snapshot feature in linux CVM. I believe most people don't know much about it, so share this article for your reference. I hope you will learn a lot after reading this article. Let's learn about it.

Automatic snapshot FAQ

1. What are the details of the automatic snapshot feature?

a. You can set your own automatic snapshot policy:

Both the system disk and the data disk can create automatic snapshots.

24 hours a day can be selected as the time point for snapshot creation, and repeat dates 7 days a week are optional.

Users can specify the save time (1-65536 days), or choose to keep it permanently.

You can query the number of disks associated with the automatic snapshot policy and the details.

b. Naming automatic snapshots: auto2.0_yyyyMMdd_1, such as auto2.0_20140418_1

c. You can manage automatic snapshots (delete, create custom mirrors, create disks, etc.)

d. The user snapshot quota has been promoted to 64 snapshots per disk, and the user's original snapshots are still retained and occupy the quota of the new snapshots.

two。 Is there a conflict between the user's custom snapshot and the automatic snapshot?

There is no conflict in use and is the same as a user snapshot, but when an automatic snapshot is being performed on a disk, the user needs to wait for the automatic snapshot to complete before creating a custom snapshot.

3. Can I keep the automatic snapshot I want without deleting it?

You can choose to keep it permanently, but when the snapshot quota for a disk is full (up to 64), the system automatically deletes the automatic snapshot with the earliest creation time.

4. If an automatic snapshot is referenced (the user creates a custom mirror or disk), will the execution of the automatic snapshot policy fail?

No, I won't.

5. If I don't have anything set up, will the auto snapshot start?

The current snapshot feature has been upgraded to version 2.0, which provides a richer choice of snapshot policies. Users need to set automatic snapshot policies and associate relevant disks before automatic snapshots can be performed normally.

6. Can automatic snapshots be deleted?

You can delete the automatic snapshot yourself, or when the snapshot quota of a disk is full (up to 64), the system will automatically delete the automatic snapshot with the earliest creation time.

7. Can you see exactly when the automatic snapshot is created?

You can see the specific creation time of each snapshot in the snapshot list interface of the ECS console.

8. How can I tell which snapshots are automatic snapshots and user snapshots?

Automatic snapshots are distinguished by name: auto2.0_yyyyMMdd_1, such as auto2.0_20140418_1

9. Will the automatic snapshot be released when the system disk is replaced, when the ECS of the CVM expires, or when the disk is released manually?

For the automatic snapshot release behavior, you can find the corresponding disk in the ECS console > all disks, and select modify disk properties to set it. By default, automatic snapshot is released with the disk. After selection, when the disk is manually released, the disk is released with the instance, or the system disk is replaced, the automatic snapshot of the disk will be deleted automatically. If you want to keep the snapshot, you can remove this option manually.

10. Do you keep automatic snapshots that are not released with the disk release and the replacement of the system disk?

Automatic snapshots that are not released with the disk and replaced with the system disk are saved for the same length of time as the automatic snapshot policy, and are automatically released when they expire.

11. Will the manual snapshot be released when the ECS of the CVM expires or when the disk is released manually?

No, manually creating a snapshot will always be retained if the user does not delete it actively.

twelve。 Can I make a few disks individually to perform or cancel automatic snapshots?

Yes, set automatic Snapshot Policy for a single disk directly in all disks.

13. Is there an automatic backup of the CVM ECS?

The ECS console provides automatic snapshot backups and user-defined snapshot backups to facilitate snapshot data backup and rollback operations.

The above are all the details of the automatic snapshot feature in linux CVM. Thank you for your reading. I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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