Help Center/ Elastic Volume Service/ User Guide/ Managing EVS Snapshots/ Using EVS Snapshots/ Instant Snapshot Restore (for Standard Snapshots)
Updated on 2026-07-07 GMT+08:00
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Instant Snapshot Restore (for Standard Snapshots)

Scenarios

After you create standard snapshots, you can only use them until the system has uploaded the snapshot data to OBS. As more data is saved to an EVS disk, the upload takes a longer time. You can use Instant Snapshot Restore to address this issue. You no longer need to wait for the upload to complete before using a standard snapshot to roll back data or create a new disk. Rollback and creation operations are fast and do not compromise data integrity.

Billing

You can use Instant Snapshot Restore for free. The snapshots you create are billed based on the storage usage of snapshot chains and the usage period. For details, see Billing for EVS Snapshots.

Constraints

We have upgraded the Instant Snapshot Restore capabilities. Table 1 shows a comparison between the old and new versions.

Table 1 Comparison between the Instant Snapshot Restore old and new versions

Comparison Item

Old Version

New Version

Enabling method

Enabling Instant Snapshot Restore

Enabled by default

Disabling method

Disabling Instant Snapshot Restore

Cannot be disabled.

Supported regions

Supported in certain regions. Check the supported regions on the console.

Max. number of snapshots with Instant Snapshot Restore enabled for a single disk

7

Unlimited

Disk type restriction

Instant Snapshot Restore is not supported for snapshots of high I/O and common I/O disks.

Instant Snapshot Restore is supported for all types of disks.

Deleting a disk (Instant Snapshot Restore enabled)

The snapshots will not be deleted, but Instant Snapshot Restore will be disabled automatically.

Enabling Instant Snapshot Restore

You can only enable Instant Snapshot Restore when creating standard snapshots. It cannot be enabled after standard snapshots are created. For details, see Creating a Standard Snapshot on the Disks Page.

Go back to the snapshot list. If the value in the Instant Snapshot Restore column is Enabled, Instant Snapshot Restore has been enabled for the target snapshot.

Disabling Instant Snapshot Restore

  1. Sign in to the EVS console.
  2. In the navigation pane on the left, choose Elastic Volume Service > Snapshots.

    The Snapshots page is displayed.

  3. In the snapshot list, locate the target snapshot and click Disable Instant Snapshot Restore in the Operation column.

  4. In the disabled dialog box, click OK.

    Go back to the snapshot list. If the value in the Instant Snapshot Restore column is Disabled, Instant Snapshot Restore has been disabled for the target snapshot.

Helpful Links

Parent Topic: Using EVS Snapshots