Creating Regular Full Backups with QuickOPC

Here's how to use QuickOPC features to create a full backup of your business volume on a regular basis. Only data that has been updated since the last backup is copied into the Backup Volume, reducing the time it takes for subsequent physical copies and reducing the business impact of backups. In the event of a complete loss of business volume data, such as a multiple drive failure, data can be recovered from a Backup Volume. It also provides less performance impact on business volume access than SnapOPC+ for copy-on-write.

Note

If you want to reduce the amount of data to back up, or if you want to manage the generation of backups, see Generation Managed Differential Data Backup with SnapOPC+.

RESTful API and Sample Scripts for Operation Use

  • Preparation

    Create a Clone of the operation volume. Use quickopc_create.py.

  • Operation

    Resynchronize Clone data with the operation volume when you want to update the backup data. Use quickopc_resync.py. After the resynchronization starts, wait for the background copy to complete. Use quickopc_wait_resync.py.

  • Restore

    Use POST /volume/{volume_id}/restore/{backup_volume_id} API to restore Clone data to an operation volume. For more information, see the description of Restoring from Clone or Snapshot.

  • Deletion

    To remove a Clone, use DELETE /volume/{volume_id} API. For more information, see the description of Deleting Volumes.

Notes

  • Clone should be created in a separate Thin Provisioning Pool from the operation volume. If an operation volume and an operation volume Clone are placed in the same Thin Provisioning Pool, and the Thin Provisioning Pool is corrupted due to a hardware failure, both the operation volume and Clone data may become unreadable.

  • When you create a Clone, all of the physical data in the operation volume is copied. Therefore, it may take some time to complete the data copy depending on the capacity of the operation volume.

  • If the operation volume becomes inaccessible during the physical data copy process due to multiple drive failures or other reasons, the backup destination data becomes inaccessible.

  • A maximum of eight Clones can be created per operation volume. When used with Snapshot creation, the maximum number is small. For more information, see the description of multi-copy in "Available Advanced Copy Combinations" in "Design Guide".