How to Mount or Unmount a Volume

When you issue the command to mount a volume or when Backup mounts a volume through auto media management, a volume that is loaded in the storage device is prepared to receive data from Backup. For example, when a tape is mounted, the read/write head of the device is placed at the beginning of the blank part of the tape, ready to write.

To mount the volume in the device, you can use either the Backup administration program or the command line:

• In the Backup administration program, select the device from the Devices display, then click the Mount button.

• At the shell prompt, enter the nsrmm command with the -m option.

After you label and mount a volume, the volume name is displayed in the Devices resource beside the pathname of the device in the Backup administration program.

To perform an unattended backup using a standalone device, you must mount labeled volumes in the device before leaving it unattended.

You can only use nonrewinding devices with Backup. If you use a rewinding device, the read/write head is repositioned at the beginning of the volume and the previously backed-up data is overwritten.