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Backing Up UNIX Systems
Chapter 5 161
Backing Up UNIX Systems
You can install a Disk Agent on every UNIX system in order to back it
up. Alternatively, you may use the Network Filesystem (NFS) to back up
data from systems that do not have a Disk Agent.
See “Backing Up Disks Using NFS” on page 164 for details.
See the HP OpenView Storage Data Protector Installation and Licensing
Guide or online Help for instructions on how to install a Disk Agent.
See the HP OpenView Storage Data Protector Software Release Notes for
a complete list of supported platforms.
Backing Up UNIX Filesystems
Limitations The maximum size of the files you can back up depends on operating
system and filesystem limitations. Data Protector has no file size
limitations on the following UNIX systems: HP-UX, Solaris, AIX, IRIX,
and Linux. On other UNIX systems Data Protector backs up files of up to
2 GB.
Data Protector backs up the directory structure, regular files, and special
files. Special files are character device files, block device files, UNIX
domain sockets, FIFO files, HP-UX network special files, and XENIX
specially-named files.
Softlinks and mountpoints are not followed, and are backed up as
softlinks and ordinary empty directories, respectively.
If there are multiple hardlinks referencing the same file, the file is
backed up only once. You can change this by setting the Backup
hardlinks as files option, as explained in “List of Data Protector
Backup Options” on page 236.
All file attributes, including file permissions, access times, and Access
Control Lists (ACLs) on HP-UX and AIX are backed up together with the
files. The time of the last access to each file is saved before reading the
file and then returned to the original value after the file is backed up.
This behavior can be changed by setting the Do not preserve access
time attributes option, as explained in “Using Backup Options” on
page 225.
Network share backup is not supported.