Snapshots
You can create snapshots to save the disk data at specified time points. These snapshots can be used for data disaster recovery.
- If data is lost, you can roll back the disk data to the state when a snapshot was created.
- You can use snapshots to create new disks so that the new disks will contain the snapshot data once being created.
Related Operations
- Snapshot Overview
- Creating a Snapshot
- Rolling Back Data from a Snapshot
- Creating an EVS Disk from a Snapshot
- Viewing Details of a Snapshot
- Deleting a Snapshot
What are the differences between snapshots and backups?
|
Item |
Storage |
Data Synchronization |
DR Range |
Service Recovery |
|---|---|---|---|---|
|
Backup |
Backups are stored in OBS, instead of disks. This ensures data restoration upon disk damage or corruption. |
A backup is a copy of a disk taken at a given time and is stored in a different location. Automatic backup can be performed based on backup policies. Deleting a disk will not delete its backups. |
A backup and its source disk reside in different AZs. Cloud server backups support cross-region replication. |
You can restore backups to their original disks or create new disks from the backups. |
|
Snapshot |
Snapshots are stored on the same disk as the original data. |
A snapshot is the state of a disk at a specific point in time, and automatic snapshots are not supported. If the disk is deleted, all its snapshots will also be deleted. |
A snapshot and its source disk reside in the same AZ. |
You can restore snapshots to their original disks or create new disks from the snapshots. |
Backups of EVS disks are created using Cloud Backup and Recovery (CBR). For details, see Managing EVS Backups.
- What Are the Typical Causes of a Snapshot Creation Failure?
- Does EVS Support Automatic Snapshot Creation?
- Can I Create Snapshots for Multiple Disks at a Time?
- How Is a Snapshot Created for My Disk?
- Why Can't I Roll Back My Disk Data from a Snapshot?
- Can I Roll Back Data from a Snapshot After Reinstalling the OS or Formatting the Disk?
- How Is the Snapshot Size Calculated?
- Do Snapshots Take Space on the Disk?
- Can I Perform Multiple Rollback Operations for a Snapshot?
- Can I Replicate Snapshots to Other Regions or Accounts?
- Why Can't I Find My Snapshot?
- Can I Use a Snapshot to Create a Disk and Roll Back the Disk Data at Almost the Same Time?
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