Unlike Data ONTAP for 7-Mode, clustered Data ONTAP did not support the NDMP Backup Restart Extension until Ontap 9.
However, this has changed now, Restartable dump backup is now supported with - Clustered Data ONTAP 9.0RC1 onwards with CommVault v11 as shown in figure below.
CommVault v11
Following versions does not support DUMP restart:
Clustered Data ONTAP 8.3.x
Clustered Data ONTAP 8.2.x
Clustered Data ONTAP 8.1.x
Clustered Data ONTAP 8.0.x
How it works:
A dump backup sometimes does not finish because of internal or external errors, such as tape write errors, power outages, accidental user interruptions, or internal inconsistency on the storage system. If your backup fails for one of these reasons, you can restart it. You can choose to interrupt and restart a backup to avoid periods of heavy traffic on the storage system or to avoid competition for other limited resources on the storage system, such as a tape drive. You can interrupt a long backup and restart it later if a more urgent restore (or backup) requires the same tape drive.
Restartable backups persist across reboots. You can restart an aborted backup to tape only if the following conditions are true:
1. The aborted backup is in phase IV.
2. All of the associated Snapshot copies that were locked by the dump command are available.
3. The file history must be enabled.
However, this has changed now, Restartable dump backup is now supported with - Clustered Data ONTAP 9.0RC1 onwards with CommVault v11 as shown in figure below.
CommVault v11
CommVault v10
Clustered Data ONTAP 8.3.x
Clustered Data ONTAP 8.2.x
Clustered Data ONTAP 8.1.x
Clustered Data ONTAP 8.0.x
How it works:
A dump backup sometimes does not finish because of internal or external errors, such as tape write errors, power outages, accidental user interruptions, or internal inconsistency on the storage system. If your backup fails for one of these reasons, you can restart it. You can choose to interrupt and restart a backup to avoid periods of heavy traffic on the storage system or to avoid competition for other limited resources on the storage system, such as a tape drive. You can interrupt a long backup and restart it later if a more urgent restore (or backup) requires the same tape drive.
Restartable backups persist across reboots. You can restart an aborted backup to tape only if the following conditions are true:
1. The aborted backup is in phase IV.
2. All of the associated Snapshot copies that were locked by the dump command are available.
3. The file history must be enabled.
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