Overland Storage Snapshot SnapSAN User Manual page 243

SnapSAN S3000/S5000 Compliance (WORM) User Guide
• Note that the SV of the oldest generation except protected SVs and derived generation
SVs without generation numbers is selected at automatic SV selection and deletion
(the selected SV is the chronologically oldest generation among the SVs including
derived generation SVs with generation numbers).
• If the target BV is paired as the MV for replication, replication is not in the Replicate
Preparing, Restore restoring, or Separate Preparing state
• The disk array storing the target volume is not in the freeze state.
• The target volume is not a dynamic disk volume (Windows system).
The following notes do not apply to joint operation with SnapSAN Manager.
• The target BV is registered in the volume list.
• If the target BV is not registered in the volume list, the following conditions must be
satisfied.
• The LV linked to the target BV is registered in the volume list.
• If the target BV is paired as the RV for replication, the MV paired with the RV is
• The volume list is not being created.
• When specifying the combination of a volume group or a disk group with a logical disk
name, specify the same number of logical volumes as those constituting a volume or
disk group on the side where the logical disk name is specified to the SV. In this case,
snapshot deletion is performed in the specified order.
• When a volume group is specified, the target volume group is active.
• When a disk group is specified, the target disk group is active.
• The SnapSAN Manager-only special file is not being created (HP-UX system and
Linux system only).
Restore Command
The iSMsc_restore command is used for restoring a snapshot .
The iSMsc_restore command restores snapshot data from SV to BV.
There are two operation modes for restoration.
• Derived SV auto delete mode
If there are multiple snapshots and restoration is executed from a midpoint of
generations, the snapshot data of which generation is later than the restored
generation is deleted automatically.
• Derived SV keep mode
If restoration is executed from a midpoint of generations, snapshots including those of
which generation is later than the restored generation are kept.
On the Windows system, unmount the BV and flush the buffer of the file system before
starting to restore snapshot data. After starting the restoration operation, mount the BV
again. On the UNIX system, if the BV file system is mounted, the command terminates
abnormally without starting the restoration operation. It is therefore necessary to unmount
the BV file system in advance.
[Main Options]
For the iSMsc_restore command, you can specify the following options.
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registered in the volume list.
©2013 Overland Storage, Inc.
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