About Snapshot Client and NDMP
Using the NDMP protocol version V4 snapshot extension, NetBackup Snapshot Client can make policy-based snapshots of data on a Network Attached Storage (NAS) host. The snapshot is stored on the same NAS device that contains the primary client data. From the snapshot, you can restore individual files or roll back an entire volume or file system, by means of Instant Recovery.
Note:
NetBackup for NDMP add-on software is required, and the NAS vendor must support snapshots.
More Information