5. Run the mkboot program. (If you have already backed up /usr onto a
separate tape, omit the /usr argument.)
mkboot /usr
See Section 4.5.3 for the procedures for rebuilding a damaged file system from
the bootable backup tape.
4.4.2 Making Periodic Backups
This section describes the procedure for making routine backups of the IRIS
workstation disk(s). The disk(s) can be backed up to a tape on a local tape
drive or across a network to a tape on another workstation.
Each file system is backed up onto a separate tape. Table 4-2 below gives the
capacity of various tapes. The df command tells you how much of the file
systems are used. Use this information to determine the size of tape required
to back up a file system.
CAUTION
Do not use multiple tapes to copy a file system that is too large to fit
onto one tape. Inserting a second tape, even when you are prompted
to do so, could cause a system crash. If more than one tape is required,
back up subdirectories of the file system onto separate tapes.
Tape Width Tape Length Approx. Capacity
Quarter-inch
Quarter-inch
Half-inch (PE format)
450 ft.
600 ft.
2400 ft.
40 Mb
60 Mb
44.6 Mb
Table 4-2: Approximate Tape Capacities for Backups
Table 4-3 lists samples of the Un i x commands for making periodic backup
tapes. See find(1) for more information on the arguments to find.
Version 1.1 SERIES 3000
IRIS OWNER’S GUIDE 4-21 Workstation Administration
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