Data Backup12-17
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dump 1uf nrst0a /vol/vol1
The command performs a level-1 backup of the /vol/vol1 volume to nrst0a. This
means that only files that have changed since the most recent level-0 backup are
written to tape. After the command is finished, it does not rewind the tape.
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dump 0f rst0a,rst1a /vol/vol1
The command backs up the /vol/vol1 volume to the tape on rst0a. If the vol-
ume exceeds the capacity of the tape on rst0a, the command writes the
second tape file to the tape on rst1a. Otherwise, it does not use the tape on
rst1a.
dump 0f urst0a,urst0a /vol/vol1
The command backs up the /vol/vol1 volume to the tape in urst0a. After the
command finishes writing to the first tape drive, it does not rewind 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 the third tape file, it prompts you to load a new tape.
NOTE: In this example, if you know in advance that the backup requires two tape files,
use rst0a as the second tape file name in the dump command so that the
command automatically rewinds the tape after it is finished.
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dump 0f rst0a /vol/vol1/.snapshot/weekly.0/home/users
From the weekly snapshot, the command performs a level-0 backup of the
/vol/
vol1/home/users qtree.
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dump 0f urst0a,urst0a,urst0a,nrst0a /vol/vol1
The command backs up the /vol/vol1 volume to a tape stacker. After the com-
mand finishes writing a tape file, it unloads the tape and reloads another tape.
After the command finishes writing the fourth tape file, it does not rewind the
tape.
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dump 0ufnl rst0a user.1.3.5 /vol/vol1/home
The n option specifies the name of the backup (user.1.3.5), which is
recorded in the /etc/dumpdates file. If you do not specify a name, the dump