A target volume stores a point-in-time data duplicate of the source eDevVolume only after the pair is split. The data duplicate can be used to recover the source eDevVolume in the event that the source eDevVolume is damaged. In addition, the data duplicate is accessible in scenarios such as application testing and data analysis.
Prerequisites
- A SmartMigration pair has been created.
- Running Status of the SmartMigration pair is Normal.
- Run the change global_config general name=vbs_hgi_client_upgrade value=2 command as user admin to set the switchover flag of the managed VBS client to split state.
If the value of vbs_hgi_client_upgrade is 2, the pair can be manually split but does not support online rollback.
Precautions
- After a SmartMigration pair is split, write requests sent by production hosts to the source eDevVolume will no longer be synchronized to the target volume.
- After a SmartMigration pair is split, the target volume cannot be accessed. You are advised to delete the target volume when deleting the pair.
Procedure
- Choose Resources > Dataflow > SmartMigration.
- Select a desired pair and click Split.
You can also click More on the right of a desired SmartMigration pair and select Split.
- Click OK.
- Confirm your operation as prompted.
Follow-up Procedure
Run the upgrade external_vbs_client finish command to finish switching VBS online. After this command is executed, VBS cannot be rolled back.
admin:/>upgrade external_vbs_client finish WARNING: You are about to perform VBS switchover. After this operation, backup data on the remote storage will be cleared, and rollback to the version before the VBS switchover is not supported. Suggestion: Before performing this operation, confirm that services are running properly and migration for all eDevVolumes has been complete. Have you read warning message carefully?(y/n)y Are you sure you really want to perform the operation?(y/n)y Command executed successfully.