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Understanding SMTape engine for FlexVol volumes

SMTape is a disaster recovery solution from Data ONTAP that backs up blocks of data to tape. You can use SMTape to perform volume backups to tapes. However, you cannot perform a backup at the qtree or subtree level. SMTape supports baseline, differential, and incremental backups. SMTape does not require a license.

Starting with Data ONTAP 8.3, you can perform an SMTape backup and restore operation by using an NDMP-compliant backup application. SMTape can be used as the backup engine only when all the nodes in the cluster are upgraded to Data ONTAP 8.3. Data backed up from Data ONTAP operating in 7-Mode cannot be restored to clustered Data ONTAP. You can choose SMTape to perform backup and restore operations only in the Storage Virtual Machine (SVM) scoped NDMP mode.

Note: Reversion process is not supported when an SMTape backup or restore session is in progress. You must wait until the session finishes or you must abort the NDMP session.

Using SMTape, you can back up 255 Snapshot copies. For subsequent baseline, incremental, or differential backups, you must delete older backed-up Snapshot copies.

Before performing a baseline restore, the volume to which data is being restored to must be of type DP and this volume must be in the restricted state. After a successful restore, this volume automatically becomes online. You can perform subsequent incremental or differential restores on this volume in the order in which the backups were performed.