SMTape is a Snapshot copy based 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 can be used in the following cases:
1. Disaster recovery solution
2. Preserving deduplication savings and deduplication settings on the backed up data during a restore operation
3. Backup of large volumes
For more details refer https://library.netapp.com/ecm/ecm_get_file/ECMP1610206
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