F.2.3 Restoration Procedures

Restoration procedures vary depending on the NAS backup volume malfunction, and the malfunction of the device in the operation side.

The recovery procedures for each malfunction are explained below:

Recover from Malfunction of NAS Backup Volume

The procedure to recover from malfunction of NAS backup volume is as follows. After performing this procedure, restore data to a NAS volume as required:

At the time of file system failure
1. When the NAS backup volume is mounted, unmount the NAS backup volume by using Web Console.
  See
  Refer to "Mount/Unmount Backup Destination" in the ETERNUS SF Web Console Guide for information on the procedures for unmounting.
2. In the operation side, stop QuickOPC that is copying from the NAS volume to NAS backup volume (stop the physical copy and Tracking processing).
3. Suspend REC and perform an REC reversal (from the backup side to the operation side).
4. In the backup side, restore from the backup volume to the REC destination volume.
  See
  Refer to "3.2.1.4 Restore on QuickOPC Backup Environment" for information on the procedures for restoring.
  Point
  After copying with restore, you need to wait for the physical copy completion. To confirm the progress status of the physical copy, execute the acopc query command with the -r and -progress options.
5. Resume REC from the REC destination volume in the backup side to the NAS backup volume in the operation side.
6. Suspend REC after REC becomes equivalent state.
7. Perform an REC reversal (from the device in the operation side to the device in the backup side) and resume REC.
  Point
  After copying to a NAS backup volume in the operation side using REC, you must check whether the REC source and destination volumes are in an equivalency maintenance state. Refer to "3.2.2.4 Restore on REC Backup Environment" for details.
At the time of RAID failure
1. When the NAS backup volume is mounted, unmount the NAS backup volume by using Web Console.
  See
  Refer to "Mount/Unmount Backup Destination" in the ETERNUS SF Web Console Guide for information on the procedures for unmounting.
2. In the operation side, stop QuickOPC that is copying from the NAS volume to NAS backup volume (stop the physical copy and Tracking processing).
3. Stop REC.
4. Recovery the NAS backup volume in the operation side.
  Perform the steps 1 to 3 in "3.10.6.2 Data Recovery Procedure of NAS Backup Volume".
5. In NAS backup volume recovery process, if a NAS backup volume, once removed, has been recreated, recreate a copy group between the NAS backup volume and the REC destination volume.
6. In the backup side, restore from the backup volume to the REC destination volume.
  See
  Refer to "3.2.1.4 Restore on QuickOPC Backup Environment" for information on the procedures for restoring.
  Point
  After copying with restore, you need to wait for the physical copy completion. To confirm the progress status of the physical copy, execute the acopc query command with the -r and -progress options.
7. Perform REC in the reverse direction from the REC destination volume in the backup side to the NAS backup volume in the operation side.
8. Suspend REC after REC becomes equivalent state.
9. Perform an REC reversal (from the operation side to the backup side) and resume REC.
  Point
  After copying to a NAS backup volume in the operation side using REC, you must check whether the REC source and destination volumes are in an equivalency maintenance state. Refer to "3.2.2.4 Restore on REC Backup Environment" for details.

Malfunction of Device in Operation Side

Business continuance by replacing the device in the operation side
1. Stop REC.
2. Replace the device.
3. Preconfigure to introduce NAS Management.
  See
  Refer to "ETERNUS Disk Storage System Configuration" and "Prior Configuration of Management Server" in the ETERNUS SF Storage Cruiser Operation Guide for information on the procedures for prior configuring.
4. Create a NAS volume and a NAS backup volume.
  Create a temporary shared folder to create a NAS volume.
  For a NAS volume to be created, specify the same volume name, volume capacity, and volume number as before the malfunction.
  Check the New radio button in the Destination Volume to backup field to create a NAS backup volume.
  See
  Refer to "Create Shared Folder" in the ETERNUS SF Web Console Guide for information on the procedures for creating a shared folder.
5. Back up the NAS volume of the replaced device using Web Console or the acnas backup command. Refer to "3.10.1.2 How to Execute Backup" for backups using Web Console. Refer to "3.10.2.2 How to Execute Backup Commands" for backups using the acnas backup command.
6. Stop QuickOPC from NAS volume to NAS backup volume (stop the physical copy and Tracking processing).
7. In the backup side, restore from the backup volume to the REC destination volume.
  See
  Refer to "3.2.1.4 Restore on QuickOPC Backup Environment" for information on the procedures for restoring.
  Point
  After copying with restore, you need to wait for the physical copy completion. To confirm the progress status of the physical copy, execute the acopc query command with the -r and -progress options.
8. Create an REC copy group to perform an REC from the backup volume in the backup side to the NAS backup volume in the replaced device, and then perform an REC. After confirming the equivalency state, suspend REC.
  Point
  After copying to a NAS backup volume in the operation side using REC, you must check whether the REC source and destination volumes are in an equivalency maintenance state. Refer to "3.2.2.4 Restore on REC Backup Environment" for details.
9. On the operation side, recover the NAS volume data in either of the following ways:
  - Restoring from the NAS backup volume to the NAS volume
    The restoration to a NAS volume can be executed via Web Console or the acnas restore command. Refer to "3.10.1.3 How to Execute Restoration" for information on the procedures for restoring via Web Console. Refer to "3.10.2.3 How to Execute Restore Commands" for information on the procedures for restoring via the acnas restore command.
  - Mounting the NAS backup volume, and manual copying a file in the NAS backup volume to the NAS volume
    Refer to "3.10.3.1 Mounting / Unmounting Procedures" for information on the procedures for mounting the NAS backup volume.
10. Perform an REC reversal (from the operation side to the backup side) and resume REC.

Note

In the case of restoration in the device after replacement due to malfunction of the device in the operation side, access to shared folders need to be enabled again.

For how to access shared folders, refer to "Operation Method" in "NAS Management" in the ETERNUS SF Storage Cruiser Operation Guide or ETERNUS SF Express Operation Guide.