Use a snapshot to create an EBS volume

Last updated:2021-08-16 19:31:14

An EBS volume that is created from a snapshot contains all data at the time point when the snapshot is created. You can use a snapshot to create an EBS volume whose capacity is equal to or larger than the snapshot size.

Note:
1. The source disk from which the snapshot is created can be a local disk or an EBS volume.
2. You can use the snapshot of a local system or data disk to create an EBS volume used as a data disk.
3. You can also use the snapshot of an EBS volume that serves as a system or data disk to create an EBS volume used as a data disk.

  • If you use a snapshot to create an EBS volume whose capacity is equal to the snapshot size, you do not need to perform operations such as partitioning and formatting the EBS volume or creating a file system. After you attach the EBS volume to a KEC instance, the data copied from the snapshot to the EBS volume can be properly read and written on the KEC instance.
  • If you use a snapshot to create an EBS volume whose capacity is larger than the snapshot size, the system only expands the capacity of the block device and does not resize the partitions and file systems. After the created EBS volume is attached to a KEC instance, you can only use the file system and data of the source snapshot. To use the expanded capacity, you need to manually resize partitions. For more information, see Overview.

Procedure

Create an EBS volume used as a data disk from the snapshot of a local disk

  1. Log in to the EBS console.

  2. In the left navigation pane, choose Snapshot > Snapshot List.

  3. Click the Local Disk tab.

  4. On the Local Disk tab, find the snapshot from which you want to create an EBS volume and choose More > Create EBS in the Operation column.image.png

  5. On the page that appears, specify required information for the EBS volume to be created, such as the availability zone, billing mode, and capacity. Then, click Buy now. You can move the pointer over the icon behind Create a Cloud hard disk from a snapshot to view details of the snapshot.image.png

  6. Click Submit Order.

Create an EBS volume used as a data disk from the snapshot of an EBS volume

  1. Log in to the EBS console.

  2. In the left navigation pane, choose Snapshot > Snapshot List.

  3. On the EBS tab, find the snapshot from which you want to create an EBS volume and choose More > Create Cloud Disk in the Operation column.image.png

  4. On the page that appears, specify required information for the EBS volume to be created, such as the availability zone, billing mode, and capacity. Then, click Buy now. You can move the pointer over the icon behind Create a Cloud hard disk from a snapshot to view details of the snapshot.image.png

  5. Click Submit Order.

Note:

  • By default, the capacity of an EBS volume created by using a snapshot is equal to the size of the snapshot. You can expand the capacity of the EBS volume as needed.
  • You can create up to 10 EBS volumes at a time.

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