NetBackup™ Snapshot Manager for Data Center Administrator's Guide

NetBackup Snapshot Manager for Data Center discovers the volume, LUNs that are created from storage volumes.

LUNs that have an online status and read-write operations are enabled can be discovered.

During the discovery of assets, the plug-in creates a mapping between volumes and LUNs.

Only online volumes are discovered.

Snapshot Manager for Data Center discovers all the NAS volumes that are online and using the active junction path on the Fujitsu AX/HX storage. Junction-Path specifies the access protocol for either NFS or SMB.

To create a LUN snapshot on the Fujitsu AX/HX storage, the array internally initiates a Redirect-on-Write (ROW) snapshot of the entire volume to which the LUN belongs. If the volume contains multiple LUNs, the snapshot includes data from the LUNs that reside on the associated volume.

When a volume snapshot is initiated on the Fujitsu AX/HX storage, creates a ROW snapshot of the entire volume and returns the snapshot data of the volume.

Snapshot Manager for Data Center takes a snapshot of the Fujitsu AX/HX NFS and SMB share using volume.

A snapshot created with the following naming convention: : NB<unique_21digit_number>

LUN snapshot - NetBackup Snapshot Manager for Data Center internally deletes the snapshot of one or more volumes to which the LUN is associated.

Volume snapshot - NetBackup Snapshot Manager for Data Center deletes the snapshot corresponding to the volume.

Snapshot Manager for Data Center deletes the snapshot of the NAS volume.

LUN Deport - Snapshot Manager for Data Center removes the LUN mapping from the target host and then deletes the LUN clone.

Volume deport - Snapshot Manager for Data Center removes the mapping from the LUN hosts associated with the volume and then deletes the volume clone.

When a snapshot deport operation is initiated for SMB, Snapshot Manager for Data Center deletes the shares created during the export call. For NFS, no action is performed.

When a snapshot export operation initiates for a LUN Snapshot Object, Snapshot Manager for Data Center creates a LUN clone from the snapshot and attaches it to the target.

When a snapshot export operation initiates for a Volume Snapshot Object, Snapshot Manager for Data Center creates a volume clone from the snapshot and attaches all the LUNs associated with the volume to the target.

The target host is assigned with the read-write privileges on the exported entity (Volume/ LUN).

The export operation is supported using the following protocols:

When a snapshot export operation is initiated, for NFS, export policy rules are checked for source volume.

For SMB protocol, a new share is created with read permission which includes the path of the snapshot. This share name is created with the snapshot name prefix.

Example: NB<unique_21digit_number>-432464523

When you restore a LUN from a snapshot, Snapshot Manager for Data Center restores the entire Volume of the LUN where the restore is triggered.

The LUN snapshot is a ROW snapshot of the underlying volume and that volume can contain multiple LUN. Even if the restore is triggered for a single LUN, the restore is performed on the entire volume. Data on the other LUNs remains unchanged.

The volume snapshot restores a snapshot copy to the read-write volume. If the current working copy of the volume is replaced with the snapshot copy.

Then it results in loss of all changes made since the snapshot copy was created.