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ReadyNAS OS 6.1
Recover Data from a Snapshot to an iSCSI-Attached Device
Strictly speaking, users who access the ReadyNAS through an iSCSI-attached device do not
have access to snapshots. However, you can clone a snapshot of a LUN to become a new
independent LUN, and then assign the LUN clone to a LUN group that the users can access.
To recover data from the LUN clone, users must access the LUN clone from the same type of
iSCSI-attached device that was used to format the parent of the clone. For example, if the
parent LUN was formatted using a Windows device, users must access the LUN clone using
a Windows device.
Recovering data from a snapshot to an iSCSI-attached device involves the following
high-level steps:
1. Clone a snapshot of a LUN.
See Clone Snapshots on page 139. Cloning a snapshot of a LUN creates a new
independent LUN.
2. Assign the LUN clone to a LUN group that the users can access.
See Assign a LUN to a LUN Group on page 104.
The LUN clone appears on the iSCSI-attached device as a virtual block device. The
iSCSI-attached device treats LUNs in the LUN group as locally attached disks. Now users
can access the LUN clone from the iSCSI-attached device.
3. Locate the snapshot data on the LUN clone from the iSCSI-attached device.
Users can access data on the LUN clone according to their access rights. Users who
have read/write access to the LUNs in the LUN group can explore the snapshot data in
the LUN clone and recover any desired data.