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 nsrmmcommand with the -moption. After you label and mount a volume, the volume name is displayed in the Devices resource beside thepathnameof 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.

Caution - 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.

Timeout Settings for Remote Devices

You can time out a mount request on a remote device storage node and redirect the save to another storage node. Set the attributes Save mount timeout and Save lockout in the Devices resource to change the timeout of a save mount request on a remote device. If the mount request is not satisfied by the number of minutes specified by the Save Mount Timeout attribute, the storage node is locked out from receiving saved data for the number of minutes specified by the value of the Save Lockout attribute. The default value for Save mount timeout is 30 minutes. The default value for Save lockout is zero, which means the device in the storage node continues to receive mount requests for the saved data.

Caution - The Save mount timeout only applies to the initial volume of a save request.

Solstice Backup 5.1 Administration Guide*April 1998

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