Dell PowerScale SnapshotIQ can take read-only, point-in-time copies (snapshots) of any directory or subdirectory within OneFS. It also supports up to 1,024 snapshots in any single directory.
For NDMP backups, OneFS takes a snapshot of the backup directory to ensure consistency of data and the NDMP backup operates on the snapshot instead of the source directory. The snapshot-based incremental backup uses snapshots to identify files to be backed up.
You are not required to activate a SnapshotIQ license on the PowerScale cluster to perform NDMP backups. If you have activated a SnapshotIQ license on the PowerScale cluster, you can generate a snapshot and back up that snapshot using NDMP. If you back up a SnapshotIQ snapshot, OneFS does not create another snapshot for the NDMP backup.