Examples of the dump command

Backups to multiple tapes

Examples of backups to multiple tapes

This section provides examples of the following kinds of multiple-tape backups:

A backup using multiple tapes on single-tape drives
A backup using multiple tapes on a stacker

Multiple tapes on single-tape drives

The following command backs up the /vol/vol1 volume to the tape on
tape drive 0 using rst0a. If the backup exceeds the capacity of the tape, the command writes the second tape file on tape drive 1 using rst1a. Otherwise, it does not use the tape on rst1a.

dump 0f rst0a,rst1a /vol/vol1

The elements of this command line are described in the following table.

Element	Meaning
`0`	Do a full backup.
`f`	A tape device is supplied in the command line.
`rst0a`	The first tape drive rewinds.
`rst1a`	The second tape device rewinds.
`/vol/vol1`	This is the directory to be backed up.

Multiple tapes on a stacker

The following command backs up the /vol/vol1 volume to the tape on urst0a. After the command finishes writing to the first tape drive, it rewinds and unloads the tape. If the volume exceeds the capacity of the tape on urst0a, the command writes the second tape file to the same tape drive on urst0a. If the command needs to write a third tape file, it prompts you to load a new tape.

dump 0f urst0a,urst0a /vol/vol1

Caution
If you do not use a stacker when you specify an unload/reload device, the tape drive will unload and reload the same tape, overwriting the tape.

The elements of this command line are described in the following table.

Element	Meaning
`0`	Do a full backup.
`f`	A tape device is supplied in the command line.
`urst0a,urst0a`	The tape stacker rewinds and unloads the first tape. If a second tape is needed, it loads the second tape.
`/vol/vol1`	This is the directory to be backed up.