Installation guide

HP-UX version 11.00.03 4-1

Mirroring Data 4-

This chapter provides information about mirroring data, mirroring root and swap

disks, and setting up I/O channel separation.

NOTE

The Mirror Disk/HP-UX operating system software is included on

Continuum systems running the HP-UX operating system; you do not need

to purchase it separately.

Introduction to Mirroring Data

This chapter describes the recommended configuration for mirroring data on

Continuum systems. For more information about setting up disk mirroring, see the

Managing Systems and Workgroups (B2355-90157).

Glossary of Terms

Before you can mirror the data on your disks, you need to set up volume groups,

physical volume groups, and logical volumes. The following terms are defined in the

Managing Systems and Workgroups (B2355-90157) and are used in this chapter.

■ A mirror is an identical copy of a set of data that you can access if your primary

data becomes unavailable.

■ A volume group is a pool of storage space, usually made up of multiple physical

storage devices.