Help Center> Elastic Volume Service> User Guide> Managing EVS Snapshots (OBT)> Creating an EVS Disk from a Snapshot (OBT)
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Creating an EVS Disk from a Snapshot (OBT)

Scenarios

This section describes how to create an EVS disk on the Snapshots page. Besides, you can also create an EVS disk from a snapshot by specifying the Create from snapshot parameter on the disk creation page. For details, see Purchase an EVS Disk.

Constraints

  • The disk type, device type, encryption, and snapshot attributes of the new disk are the same as those of the snapshot's source disk.
  • A maximum of 128 disks can be created from a snapshot.
  • Batch disk creation is not possible, and the quantity parameter must be set to 1.
  • The AZ of the disk is the same as that of the snapshot's source disk and cannot be changed.
  • A snapshot whose name starts with autobk_snapshot_vbs_, manualbk_snapshot_vbs_, autobk_snapshot_csbs_, or manualbk_snapshot_csbs_ is automatically generated during backup. Such a snapshot can only be viewed. It cannot be used to create new disks.
  • If you first roll back the snapshot to the original disk, you cannot use the snapshot to create a new disk then.

Procedure

  1. Log in to the management console.
  2. Under Storage, click Elastic Volume Service.
  3. In the navigation pane on the left, choose Elastic Volume Service > Snapshots.

    The snapshot list page is displayed.

  4. In the snapshot list, locate the row that contains the target snapshot and click Create Disk in the Operation column.
  5. Configure the disk parameters.

    For details, see Purchase an EVS Disk.

    A maximum of 128 disks can be created from a snapshot.

    • In the condition that you do not specify the disk capacity, if the snapshot size is smaller than 10 GiB, the default capacity 10 GiB will be used as the disk capacity; if the snapshot size is greater than 10 GiB, the snapshot size will be used as the disk capacity.
    • To specify a disk capacity larger than the snapshot size, set the disk capacity in the Disk Specifications area.

  6. Click Next.
  7. Pay for the fees as prompted and click OK.

    The disk list page is displayed.

  8. In the disk list, view the disk status.

    When the disk status changes to Available, the disk is successfully created.