About NAS snapshot overview
By means of Snapshot Client, Snapshot Management Server and NDMP V4 snapshot extension, NetBackup can make snapshots of Client data on a NAS host. A NAS snapshot is a point-it-time disk image. Snapshots can be retained on the disk as long as desired. The data can be efficiently restored from disk by means of the Snapshot Client Instant Recovery feature. Broadly, in NetBackup, snapshot-based data protection for NAS can be categorized as following:
Dynamic NAS (D-NAS): By means of Snapshot management server and the storage array plugins, NetBackup can make snapshots of NAS volumes and shares. The snapshots are accessed on backup hosts and read by dynamic streams to create point in time backup copies.
NDMP: NetBackup can make snapshots of client data on a NAS (NDMP) host using NDMP V4 extension. The snapshot data is read over NDMP and backup copies are created per configured target.
NAS snapshot through stagged NAS volume or share: NetBackup can make snapshots of client data that resides on the NAS host and be accessible on the client through an NFS mount on UNIX or CIFS on Windows.
A NAS snapshot is a point-in-time disk image. Snapshots can be retained on disk as long as desired. The data can be efficiently restored from disk by means of the Snapshot Client Instant Recovery feature.
Note:
NetBackup for NDMP software is required in addition to Snapshot Client.
See the following diagram for an overview.
In the NetBackup policy, enter the following:
For Windows client:
\\ndmp_hostname\share_name
For UNIX client:
//NFS_mountpoint
Note:
Windows pathnames must use the Universal Naming Convention (UNC).
NetBackup creates snapshots on the NAS-attached disk only, not on the storage devices that are attached to the NetBackup server or the client.