HP-UX System Administrator's Guide: Overview

• HP-UX 11i v3 HA-OE
• HP-UX 11i v3 DC-OE
Mirrordisk/UX supports up to three copies of data if you are using LVM with Version
1 volume groups, and up to six copies of data if you are using LVM with Version 2
volume groups.
Using the base version of VERITAS Volume Manager you can mirror only your root
file system. By purchasing and installing the full version of VERITAS Volume Manager,
you can mirror other disk groups and have up to 32 mirror copies of a volume’s address
space.
Data Backups
At any point in time, data can be copied using any one of a number of utilities. The
destination for the copies of data can be removable media that can be stored off site or
shipped to another location for safe keeping. Removable media that can be used for
backups include:
• other disks
• magnetic tapes
— DLT
— DDS
• optical discs
— recordable DVDs
— recordable CDs
— magneto-optical disk libraries
You can even back up files to a file on an alternate disk (as in the case of a tar archive).
Backup Utilities
There are many utilities in HP-UX to backup your data:
• pax
The pax command extracts, writes, and lists archive files and copies files and
directory hierarchies. A more contemporary utility, pax performs basically the
same functions as the older (still available) utilities cpio and tar. For details
about pax, see pax(1).
• shar
The shar command bundles the named files and directories into a single
distribution package suitable for mailing or moving. The files can contain any data,
including executables. The resulting package, written to standard output, is a shell
script file that can be edited (for example, to add messages at the beginning).
58 Major Components of HP-UX