Snapshot for Spectrum Virtualize commands
Use this information to learn about commands that are available for Snapshot sessions on Spectrum Virtualize based storage systems. Snapshot sessions are tied to Spectrum Virtualize volume groups and allow for the creation of multiple point-in-time copies of the data without requiring the creation of target volumes in advance. To issue a command, go to and click the command.
| Command | Action |
|---|---|
| Create Safeguarded Snapshot | Creates a safeguarded snapshot of all volumes in the volume group that is associated with the Snapshot session. The server requeries the hardware to ensure that all volumes in the volume group are contained in the new safeguarded snapshot. Each safeguarded snapshot that is created is displayed in the table of snapshots on the session details panel for the session and is marked as Yes in the Safeguarded column. Hosts cannot attach directly to snapshots. To attach hosts to the snapshots, first create a clone or thin clone of the snapshot. |
| Create Snapshot | Creates a snapshot of all volumes in the volume group that is associated with the Snapshot session. The server requeries the hardware to ensure that all volumes in the volume group are contained in the new snapshot. Each snapshot that is created is displayed in the table of snapshots on the session details panel for the session. Hosts cannot attach directly to snapshots. To attach hosts to the snapshots, first create a clone or thin clone of the snapshot. |
| Thin Clone Snapshot | Use this command to create a thin clone of a selected snapshot. When the command is issued, the user selects one of the existing recoverable snapshots, which is used to create a thin clone. When the command completes, a new volume group is created on the hardware. The volumes in the new volume group hold a snapshot of the data at the time the snapshot selected was taken. Volumes in a thin clone are space efficient and do not perform a full copy of the data but performs only a copy of the changed tracks. Thin clones can be used for forensic analysis to analyze the data at a given point in time or for temporary usage of the data. When the work is complete, Thin clones can be deleted from the Snapshot session they were created in. |
| Clone Snapshot | Use this command to create a clone of a selected snapshot. When the command is issued, the user selects one of the existing recoverable snapshots, which is used to create a clone. When the command completes, a new Snapshot session is created on the server that is associated to a new volume group on the hardware. The volumes in the new volume group hold a snapshot of the data at the time the snapshot selected was taken. Volumes in a clone perform a full copy of the data in the snapshot, making them full clones of the original volumes at the snapshot time. Cloned snapshots are not associated to the Snapshot session that they were created in and can be managed from the new session as entirely separate volumes. |
| Delete Snapshot | Use this command to delete one of the snapshots in the Snapshot
session. Note: A Safeguarded Snapshot cannot be deleted.
|
| Delete Thin Clone | Use this command to delete a thin clone of a snapshot in the Snapshot session. When a thin clone is deleted, the thin clone volume group and all volumes in the volume group are deleted from the storage system. |
| Refresh States | Refreshes the list of snapshots and thin clones for the volume group that is associated with the session. The Snapshot session refreshes automatically. However, this command can be used to force a refresh. |
| Remove Session | Use this command to remove the Snapshot session from the server. This command can be issued even if there exists a snapshot or thin clones in the session. When the session is removed from the server, all volume groups, snapshots, and thin clone volumes groups remain on the storage system. |