Netgear RN3138 Software Manual - Page 135
Recover Data from a Snapshot to a Network-Attached Device
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ReadyNAS OS 6.4 Recover Data from a Snapshot to a Network-Attached Device Recovering data from a snapshot to a network-attached device, such as a laptop or tablet, involves the following high-level steps: 1. Enable access to snapshots. You must allow users to access snapshots from network-attached devices. You can grant access to snapshots by selecting the Allow snapshot access check box when you configure the properties of a shared folder. For more information, see View and Change the Properties of a Shared Folder on page 52. 2. Access a shared folder from a network-attached device. Snapshots reside on the same volume as the shared folder (or LUN) from which they were created. After you enable access to snapshots, users can access snapshots of shared folders according to their access rights. Users who have access to a shared folder can access its snapshots. Users who do not have access to a shared folder cannot access its snapshots. For more information about accessing a shared folder from a network-attached device, see Access Shared Folders from a Network-Attached Device on page 71. 3. Locate the snapshot data on the ReadyNAS. Snapshot data is stored in a snapshot subfolder within the shared folder. Users who have read/write access to the shared folder can explore the snapshot data and recover earlier versions of files or folders. Recover Data from a Snapshot to an iSCSI-Attached Device Strictly speaking, users who access the ReadyNAS through an iSCSI-attached device cannot access 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 128. 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 101. 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. Snapshots 135
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