Installation guide

For example, if you want to perform a level 0 dump of the root, /usr, and
/projects file system partitions, follow these steps:
1. To back up the root file system, load a tape into your tape drive and
enter:
# dump -0u /
After completing the backup, remove the tape from your tape drive.
2. To back up the /usr file system, load a new tape into your tape drive
and enter:
# dump -0u /usr
After completing the backup, remove the tape from your tape drive.
3. To back up the /projects file system, load a new tape into your tape
drive and enter:
# dump -0u /projects
You can either back up each file system on an individual tape, or you can
back up multiple file systems on one tape by specifying the no-rewind
device, /dev/nrmt0h, as the output device. The following examples show
the root, /usr, and /projects file systems being backed up on one tape:
# dump -0uf /dev/nrmt0h /
# dump -0uf /dev/nrmt0h /usr
# dump -0uf /dev/nrmt0h /projects
The previous example may require additional media management to
cross-reference dump files with tapes, especially when a single dump file
spans media. Exercise care when labeling this type of backup media.
11.3.3 Performing an Incremental Backup
You should set up a routine as part of your backup schedule to make it
easier to remember which backup to do each day. This routine should
include a mechanism for logging your backups and their dump level and for
listing the tapes on which they are made. Because of the chance of system
corruption, you should not keep this information on the computer system.
Once you have established a system for making incremental backups, the
procedure is simple. Assume you use the following backup schedule to do a
daily backup of /usr:
0199919999…
On Monday, perform a level 0 dump:
# dump -0u /usr
Administering the Archiving Services 11–13