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Use Replication

After creating a replica of the generated Block Storage(BM) in another location, you can synchronize it periodically. You can perform the tasks on the Block Storage(BM) Details page and the Replication page.

Reference
  • The kr-south region does not provide Block Storage (BM) replication functionality.

Create Clone

You can create a replica volume in a different location.

Caution
Clones can only be created from the original volume.
To create a replica volume, 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. On the Block Storage(BM) List page, click the resource for which you want to create a replica. You will be taken to the Block Storage(BM) Details page.
  4. Check the setting status of the Snapshot Capacity item.
    • Replication can be created only when storage space is available through snapshot capacity configuration.
    • For detailed information, refer to Modify Snapshot Capacity.
  5. Click the Create Clone button. The Create Clone popup opens.
  6. Enter the Replication location, Replication volume name, and Replication schedule, then click the Create button. It creates a replica with the same disk type.
    • Replication Location: Select a location different from the original Block Storage(BM) volume.
    • Replication Volume Name: Start with an English letter and use English letters, numbers, and special characters (-) to enter 3 to 28 characters.
    • Replication interval: Select from 5 minutes, 1 hour, daily, weekly, monthly. Replication will be performed using the interval below.
      • Daily: every day 23:59:00
      • Weekly: Every Sunday 23:59:00
      • Monthly: 1st day of each month 23:59:00
  7. Click the Clone page.
    You will be taken to the Clone page.
  8. Check the replication information.
    • When selecting the volume name of the source or replica, you are taken to the volume’s Block Storage(BM) Details page.
Reference
  • When a replica is created, a copy with the same disk type is generated.
  • After setting the snapshot size, you can create a replica, and the disk type of the created replica is the same as the original.
  • If the snapshot capacity utilization is high (around 90%), replication may be stopped.
  • After setting the snapshot capacity, volumes added to the Volume Group can be replicated at the group level on the Volume Group page.
  • You can create one replica per volume, and data transfer charges apply for cross‑region replication.
  • A volume created by cloning cannot be added to a Volume Group.
  • If you are using a Volume Group, you can view replication information in the Volume Group (BM).

Edit replication policy

You can change the replication status by modifying the replication policy.

Caution
During replication, the replication interval and replication policy cannot be modified.

To modify the replication policy, 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. On the Block Storage(BM) List page, click the resource to edit the replication policy. You will be taken to the Block Storage(BM) Details page.
  4. Click the Replication page. Go to the Block Storage(BM) Replication page.
  5. Click the Edit button of the Replication Policy. The Edit Replication Policy popup opens.
    • Use: performs replication. If it is Paused, you can change it to Use.
    • Pause: Temporarily stops replication. If use, you can modify to Pause.
    • Delete: Delete the replica. If Paused, it can be changed to Delete, and after deletion, replication cannot be used again.
  6. Check the updated Replication Policy on the Block Storage(BM) Replication page.
Caution
  • When deleting a policy, please note the following.
    • After the policy is deleted, the replica will not be reverted to the original, and you cannot create a replica.
    • After deleting the policy, you cannot connect to existing replicas, and you can only create new replicas.
  • Data stored only in the replica after a pause will be deleted when replication is used again.
  • When using a replication policy, replicas are in Read only state and cannot be modified. Unmount from all connected resources before using replication.
  • You can mount on the connected server only when the replication policy is deleted or paused.

Edit replication cycle

You can change the synchronization interval between the original and the replica by modifying the replication interval.

Caution
During replication, Replication Cycle and Replication Policy cannot be modified.

To modify the replication interval, 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. Click the resource to modify the replication interval on the Block Storage(BM) List page. You will be taken to the Block Storage(BM) Details page.
  4. Click the Replication page. Go to the Block Storage(BM) Replication page.
  5. Click the Edit button of Replication Cycle. Replication Cycle Edit popup opens.
    • Replication interval: Select from 5 minutes, 1 hour, daily, weekly, monthly. Replication will be performed using the interval below.
      • Daily: 23:59:00
      • Weekly: Every Sunday 23:59:00
      • Monthly: 1st day of each month 23:59:00
  6. Check the modified Replication Interval on the Block Storage(BM) Replication page.
Use Snapshot
Use Volume Group