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Preliminary and Confidential
AUSPEX
8
Backing Up the NetServer
About This Chapter
A good backup strategy is vital to the protection of your data. A program of regularly
scheduled backups protects your data from corruption because of a system crash or other
cause, and protects user files against accidental deletion.
Note: Familiarize yourself with the Auspex tape drive naming conventions
before attempting to back up or restore file systems. Refer to “Tape Drives” on
page 4-2 for more information on how to name the drives.
This chapter, in three major parts, summarizes how to back up and restore file systems on
the NetServer:
s
Backing up a physical disk partition to tape, which must be performed when the
partition is offline.
The information includes:
s
s
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using the dump and restore commands
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calculating the amount of tape to use for a backup
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a suggested scheme for backing up a system with 40 drives
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backing up the root disk
Backing up a file system while it is online (that is, cloning an active file system).
Restoring a file with a damaged inode.
Remember that no matter how effective your backup strategy is, if you are not following
the recommended procedures for cleaning and maintaining your tape drives and tape
media, you risk losing valuable data. For more information, refer to “Preventive
Maintenance” in the hardware manual for your NetServer.
For a more detailed description of backups and how to perform them, see Sun’s System and
Network Administration.
Recommendation: Although a mirrored partition protects data on the
partition from loss because of disk or media errors, mirroring cannot protect
the data from loss because of other causes such as accidental deletion. Follow a
regular backup routine for mirrored partitions as for other partitions.
Backing Up the NetServer
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