Reserving a Storage Device for Cloning

Cloning data to tape ensures that you can successfully recover your data after the file-type volumes are relabeled. This procedure requires a second tape device, in addition to the one tape device used for logical-log file backups, as Figure 4 shows. For more information, see Using Filesystems as Storage Devices.

If you are using two file-type devices, reserve two tape devices so you can clone your file-type volumes to tape, as Figure 5 shows.

To recover data when the file-type volume mounted on the file-type device fills

Make sure that the storage device is not active.
Protect the storage volume from backup operations. If the storage volume is not mounted, change it to Backup Disabled:
1. Unmount it and note the volume name:
```
ism_op -unmount device_path
```
2. Change the backup status of the specified storage volume to Backup Disabled:
```
ism_config -volume name -only_restore yes
```
3. Mount the storage volume once again:
```
ism_op -mount device_path
```

Label and mount a tape volume in the ISMData Clone pool:

Create a new device as follows:
```
ism_add -device device_path -type tape
```

Label the device:

ism_op -label device_path -pool pool -volume name

Mount the volume:
```
ism_op -mount device_path
```

Clone the file-type volume (or save set) to tape:
```
ism_clone -volume name -pool pool
```
Depending on the type of media that you use, you might need more than one clone volume to hold all the data from the file-type device.
Relabel the file-type volume so that it can be used for new backups.
When you relabel the file-type volume, you can no longer access the original data. If you need to recover data, ISM directs you to mount the cloned volume.