VERITAS Volume Manager 3.1 Administrator's Guide

Introduction to Volume Manager

Physical Objects

Chapter 130

Physical Objects

This section describes the physical objects (physical disks and partitions)

used by Volume Manager.

Physical Disks and Disk Naming

A physical disk is the basic storage device (media) where the data is

ultimately stored. You can access the data on a physical disk by using a

device name (devname) to locate the disk. The physical disk device

name varies with the computer system you use. Not all parameters are

used on all systems. Typical device names can include: c

, where:

• c

# i

s the controller

• t

is the target ID

• d

is the disk number

On an HP-UX 11i Version 1.5 system, the HP-UX partition number on

the boot disk drive is: c

s2, where:

• s2 is the slice number

Partitions

On some computer systems, a physical disk can be divided into one or

more partitions. The partition number

or s

, is added at the end of

the device name. Note that a partition can be an entire physical disk.

For HP-UX 11i, all the disks (except the root disk) are treated and

accessed by the Volume Manager as entire physical disks using a device

name such as c

. On HP-UX 11i Version 1.5, the root disk is on

partition 2, c

s2.