User manual

98
LUN Backup
The NAS supports backing up iSCSI LUNs to different storage locations (Windows, Linux, or
local shared folders), restoring the LUNs to the NAS, or creating a LUN snapshot and mapping
it to an iSCSI target.
In this chapter, these topics are covered:
 Backing up iSCSI LUNs
 Restoring iSCSI LUNs
 Creating iSCSI LUN Snapshots
 Managing LUN Backup/Restore/Snapshot by Command Line
Note:
 This function or its content is only applicable on some models. To check for applicable
models, please refer to the product comparison table on the QNAP website.
 Snapshots and related features are currently only available for the following NAS
series: x51*, x53, x63, x70, x71, x79, x80.
o * A minimum of 4 GB RAM is required to use snapshots.
o * x51 series models only support up to 256 snapshots instead of 1024. The HS-251
does not support snapshots.
Backing up iSCSI LUNs
The entire LUN can be backed up as an image file and saved to a different location. The
storage location can be a Windows share (SMB/CIFS), a Linux share (NFS), or a local folder
on the NAS.
Before backing up an iSCSI LUN, make sure at least one iSCSI LUN has been created on the
NAS. To create iSCSI targets and LUN, go to "Storage Manager" > "LUN Backup".
1. Click "Create a job".
2. Select "Back up an iSCSI LUN" and click "Next".
3. Select the source LUN for backup. If an online LUN is selected, the NAS will automatically
create a point-in-time snapshot for the LUN.
4. Specify the destination where the LUN will be backed up to. The NAS supports LUN
backup to a Linux share (NFS), a Windows share (CIFS/SMB), and a local folder on the
NAS. Click "Test" to test the connection to the specified path. Then click "Next".
5. Enter a name of the backup LUN image or use the one generated by the NAS. Select the
subfolder where the image file will be stored. Select to use compression or not and click