Using SnapOPC to Back Up Differential Data Without Generation Management

This section describes how to use the SnapOPC feature to get a Volume Snapshot not managed by generation (Backup only incremental data). This is useful if you want to create a one-point snapshot without generation management (for example, you may want to temporarily create a recovery point separate from the regular backup so that you can return to the original state before you do any work).

Caution

  • Because only differential data is backed up, if data in an operation volume is corrupted due to a hardware failure, you cannot restore from Snapshot. A backup that is intended to recover from application errors or operational errors.

  • For regular backups, use SnapOPC+ for generational management instead of SnapOPC.

RESTful API and Sample Scripts for Operation Use

  • Preparation

    None.

  • Operation

    Create an unmanaged Snapshot when you want to create a backup. Use snapopc_create.py.

  • Restore

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

  • Deletion

    Use DELETE /volume/{volume_id} API to remove Snapshots. For more information, see the description of Deleting Volumes.

Notes