VERITAS Volume Manager 4.1 Administrator's Guide

Creating Volumes

Creating a Volume on Speciﬁc Disks

Chapter 7 239

This command mirrors column 1 across disk01 and disk03, and column 2

across disk02 and disk04 as illustrated in Figure 7-2, “Example of using

Ordered Allocation to Create a Striped-Mirror Volume,”.

Figure 7-2 Example of using Ordered Allocation to Create a Striped-Mirror

Volume

Additionally, you can use the col_switch attribute to specify how to

concatenate space on the disks into columns. For example, the following

command creates a mirrored-stripe volume with 2 columns:

# vxassist -b -o ordered make strmir2vol 10g

layout=mirror-stripe ncol=2 col_switch=3g,2g disk01 disk02

disk03 disk04 disk05 disk06 disk07 disk08

This command allocates 3 gigabytes from disk01 and 2 gigabytes from

disk02 to column 1, and 3 gigabytes from disk03 and 2 gigabytes from

disk04 to column 2. The mirrors of these columns are then similarly

Mirror

Striped-Mirror Volume

Underlying Mirrored Volumes

Column 1

Column 2

disk01-01

disk03-01

disk02-01

disk04-01

Striped Plex