Dell PowerVault 725N (Rackmount NAS Appliance) - Manual (Page 114)

Backing Up Dell ActiveArchive™ Persistent Images
Backing up persistent images eliminates the possibility of files changing during the back up job. Persistent images always contain the data that existed when
the persistent image was taken. However, backing up persistent images requires that you perform several steps and should be performed only by advanced
backup administrators. Dell recommends that you use the available open file agents in VERITAS Backup Exec to back up your open files rather than backing up
persistent images.
To back up a persistent image, perform the following steps:
1. Use the NAS Manager to create a persistent image.
See the " Dell ActiveArchive " section in this guide.
2. On the NAS Manager primary menu, click Maintenance.
3. Click Terminal Services and log in to the NAS system.
4. If the PowerVault Advanced Administration window displays, click Exit.
5. Double-click My Appliance and browse to the persistent image you created in step 1 .
Persistent images are located in the Dell ActiveArchive directory of the volume on which you created the persistent image in step 1.
6. Right-click the persistent image, and then click Sharing.
7. Click Share this folder.
8. Type the name of the share in the Share name field.
9. Click Permissions.
10. Set the required permissions in the Permissions window, and then click OK.
11. Click OK in the Properties window.
12. On the system that is running VERITAS Backup Exec, set up VERITAS Backup Exec so that it can back up user shares.
You can find this option in Tools→ Options menu on the Network tab.
13. In the VERITAS Backup Exec Backup Selections window, browse to your NAS system under Entire Network.
14. Select the share name that you created in step 8 for your persistent image.
15. Deselect the Persistent Storage Manager State directory when performing persistent image backups.
This directory contains files needed for persistent images. However, to save space on your backup media, backing up the files is not recommended.
16. Click Backup.
17. Select Run Now to run the backup now or Schedule to schedule your backup job to run at a later time.
Limitations on Backing Up Persistent Images
l You cannot do incremental or differential backups of persistent images.
l You cannot use GFS rotation schemes when backing up persistent images.
l You cannot schedule a backup of a persistent image.
You must perform a manual backup of persistent image files because each persistent image filename is unique in that it includes the date and time
(hour-minute-second) that the persistent image was taken.
l When you restore a persistent image, you must redirect the restore to a location other than the original persistent image location. A restore to the
original location is not successful.
NOTE: For increased performance, back up only read-only persistent images.
NOTE: Although you are backing up your persistent image from a network share, it does not create network traffic if you are backing up to a local
backup device.