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NetVault Plug-in for NDMP 10.0.5 - Application Notes for NetApp ONTAP

Additional notes

When restoring data, you may notice one or more of the following entries in the NetVault Backup logs. These messages are routine and do not require any intervention:
•
Mover has paused due to seek outside the supplied window: This entry is displayed as a Background message. BRE backups create a segment on tape for each checkpoint (as configured in Number of Gigabytes Between Checkpoints in the Backup Options Set). This message is displayed after each individual segment is restored and it just indicates the underlying mechanism behind the NDMP operation.
•
Received media request for UID: This entry is displayed as an Information message. It appears after each segment is restored as a request is sent to the Media Manager for the media that contains the next segment. This message appears even if the next segment resides on the same media.
•
No suitable drive or media for the job — Request held in queue: This entry is displayed as a Warning. It appears when the required piece of media is not available or it is in use. If the piece of media being requested is the current one, this message indicates a temporary condition and the restore resumes shortly.

Restoring Incremental Backups

The incremental restores build on each other. To restore an Incremental Backup, you must have all the backups from Level-0 through the last backup in the backup sequence that you want to restore.
To restore an Incremental Backup
1
Restore the Full or Level 0 Backup. For more information, see Restoring data using the plug-in.
2
Restore each Incremental Backup in the backup sequence, starting with the lowest-level backup and going to the last backup that you want to restore (that is, in the same order in which they were created). For each dump level, follow the steps outlined in the section Restoring data using the plug-in.
 
 
*IMPORTANT: All NDMP backups are effectively snapshots of the volume. When you restore a dump backup in an increment series, it restores all the data in the saveset. At the same time, it deletes the files present on the filer, but not available in that saveset. Thus, it reconstructs the subtree as it was at the time of backup.

Renaming or relocating data

When restoring a backup, you can rename the directories to create a copy of the data instead of overwriting of the existing versions. You can also relocate the data to a different volume. This procedure can be useful if the original volume is down or if you are dealing with limited bandwidth or capacity.
 
 
*NOTE: This feature is only available to savesets that were created with the Save File Information option.
To rename or relocate data during restore
1
Complete steps 1 through 3 in the section Restoring data using the plug-in
2
Select the volume that you want to rename, and in the Actions list, click Rename.
3
In the Restore Rename dialog box, configure the following option:
•
To rename a file or directory, type the new name.
•
To relocate the item to a different volume, type the volume name. You can also rename while relocating by specifying a new path. The volume to which you are relocating must exist on the filer.
In NetApp ONTAP 8.1 C-mode, use the following format to specify the new path:
/<vservername>/<volumename>/<foldername>
Example:
/vs1/vol4/data/restore
Click OK to close the dialog box.
After you close the dialog box, the plug-in updates the corresponding node in the selections tree to display the new name and location for the file or directory.
4
Complete steps 4 through 9 in the section Restoring data using the plug-in.

Restoring data to an alternate filer

To relocate a backup to an alternate filer, use the following procedure. It can be useful during a server migration or disaster recovery operation.
Prerequisites
Before you start the restore procedure, add the target filer to the plug-in. For more information, see the Dell NetVault Backup Plug-in for NDMP User’s Guide.
Restore procedure
To restore data to an alternate filer
1
Complete steps 1 through 3 in the section Restoring data using the plug-in.
2
To rename or relocate data during restore, complete steps 2 and 3 in the section Renaming or relocating data.
3
Click Edit Plugin Options, and configure the following option:
NDMP Server: This option specifies the target filer name. By default, it is set to the name of the original filer from which the data was backed up. To relocate the data to an alternate server, type the name of the target filer.
4
Select the appropriate DAR method. For more information about the available options, see Restore options.
5
Complete steps 5 through 9 in the section Restoring data using the plug-in.
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