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Use Snapshot

You can create, delete, or recover a snapshot of a created Block Storage (BM). You can perform these actions on the Block Storage (BM) Details page and the Snapshot List page.

Create Snapshot

Users can create a snapshot at the desired point in time.

guide
A replica can delete the replication policy, set the snapshot size for all block storage within the volume group, and then create a snapshot.
To create a snapshot, follow these steps.

  1. Click the All Services > Storage > Block Storage(BM) menu. Navigate to the Service Home page of Block Storage(BM).
  2. On the Service Home page, click the Block Storage(BM) menu. You will be taken to the Block Storage(BM) List page.
  3. Click the resource to create a snapshot on the Block Storage(BM) List page. Navigate to the Block Storage(BM) Details page.
  4. Check the setting status of the Snapshot Capacity item.
    • Snapshots can be created only when storage space has been secured by configuring snapshot capacity.
    • For detailed information, refer to Modify Snapshot Capacity.
  5. Click the Create Snapshot button. The Create Snapshot popup opens.
  6. Click the Create button. It creates a snapshot of the current point in time.
  7. Click the Snapshot List page. You will be taken to the Block Storage(BM) Snapshot list page.
  8. Check the generated snapshot.
Caution
  • If the maximum number of snapshots or the snapshot space threshold (around 90%) is exceeded, older snapshots are deleted first.
  • If the usage rate within the snapshot capacity is high (around 90%), replication may be stopped.
  • If there is a volume in the Volume Group with snapshot capacity not set, you cannot create a snapshot. Set the snapshot capacity for all volumes first.
  • Snapshots can be created up to a maximum of 1,023 (with up to 128 automatically generated via schedule), and if the maximum number is exceeded, no further snapshots can be created.
Reference
  • The snapshot creation time is based on Asia/Seoul (GMT +09:00).
  • If you want to automatically create snapshots using a schedule, set the snapshot schedule on the Block Storage(BM) Details page.
  • For detailed information about the snapshot schedule, refer to Modify Snapshot Schedule.
  • Capacity can be expanded only for the original volume that does not use the snapshot feature.

Recover Snapshot

Block Storage(BM) volumes can be restored from a snapshot. To restore a snapshot, follow the steps below.

  1. Click the All Services > Storage > Block Storage(BM) menu. Navigate to the Service Home page of Block Storage(BM).
  2. On the Service Home page, click the Block Storage(BM) menu. You will be taken to the Block Storage(BM) List page.
  3. Block Storage(BM) List Click the resource to restore from a snapshot. Block Storage(BM) Details page will be opened.
  4. If a server has been added in the Connected Server item, connect to the server and then perform the disconnect tasks (Umount, Disk Offline).
  5. Click the Snapshot List page. Navigate to the Block Storage(BM) Snapshot List page.
  6. After checking the Snapshot name and Creation timestamp, click the More button of the snapshot you want to restore.
  7. Recover button, click it. The snapshot recovery popup opens.
  8. After verifying the snapshot name and creation time, click the Confirm button. Recover the Block Storage volume from the snapshot.
  9. Click the Details button. Navigate to the Block Storage(BM) Details page.
  10. Connection Server If a server has been added to this item, connect to the server and perform the connection tasks (Mount, Disk Online).
Caution
  • Snapshot recovery must be performed while all connected servers are disconnected (Umount, Disk Offline), and the restored volume can be used after it is reconnected (Mount, Disk Online).
  • After the snapshot recovery is completed, all snapshots created after the snapshot used for recovery are deleted.
  • When restoring a snapshot, the volume is restored to that point in time.
  • If you are using Volume Group(BM), you can perform snapshot recovery from the detail page of Volume Group(BM).

Create a recovery copy

You can create a recovery copy from a snapshot of a Block Storage (BM) volume. To create a snapshot recovery copy, follow the steps below.

  1. Click the All Services > Storage > Block Storage(BM) menu. Navigate to the Service Home page of Block Storage(BM).
  2. On the Service Home page, click the Block Storage(BM) menu. You will be taken to the Block Storage(BM) List page.
  3. On the Block Storage(BM) List page, click the resource to restore from a snapshot. You will be taken to the Block Storage(BM) Details page.
  4. If a server has been added in the Connected Server item, connect to the server and then perform the disconnect tasks (Umount, Disk Offline).
  5. Click the Snapshot List page. Go to the Block Storage(BM) Snapshot List page.
  6. After confirming the Snapshot name and Creation timestamp, click the More button of the snapshot you want to create a recovery copy for.
  7. Click the Create Recovery button. The snapshot recovery creation popup opens.
  8. After entering the Recovery volume name, click the Create button. A popup notifying the creation of the recovery image will appear.
  9. Click the Confirm button. The recovery copy creation request is complete.
Caution
  • Only one recovery copy can be created per original.
  • A recovery copy is a separate volume created with the same capacity as the original, and it incurs additional costs.
  • If you are using Volume Group(BM), you can create a recovery copy on the detail page of Volume Group(BM).

Delete Snapshot

You can select a snapshot to delete. To delete a snapshot, follow these steps.

  1. Click the All Services > Storage > Block Storage(BM) menu. Go to the Service Home page of Block Storage(BM).
  2. On the Service Home page, click the Block Storage(BM) menu. You will be taken to the Block Storage(BM) List page.
  3. On the Block Storage(BM) List page, click the resource to delete the snapshot. You will be taken to the Block Storage(BM) Details page.
  4. Click Snapshot List. It navigates to the Block Storage(BM) Snapshot List page.
  5. After confirming the Snapshot name and creation time, click the More button of the snapshot you want to delete.
  6. Click the Delete button. The snapshot will be removed from the Snapshot List page.
    • After selecting the snapshots to delete from the snapshot list, you can click the Delete button at the top of the list to delete them all at once.
      Reference
      • Snapshots that contain snapmirror in the snapshot name cannot be deleted. snapmirror is included in the snapshot name when a replication is created.
      • If you are using Volume Group(BM), you can delete snapshots from the detail page of Volume Group(BM).
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