VERITAS Volume Manager 4.1 Administrator's Guide

Creating Volumes

Creating a Striped Volume

Chapter 7 249

NOTE A striped-mirror volume requires space to be available on at least as

many disks in the disk group as the number of columns multiplied by the

number of stripes in the volume.

To create a striped-mirror volume, use the following command:

# vxassist [-b] [-g diskgroup] make volume length

layout=stripe-mirror [nmirror=number_mirrors]

[ncol=number_columns] [stripewidth=size]

NOTE Specify the -b option if you want to make the volume immediately

available for use. See “Initializing and Starting a Volume” on page 258

for details.

By default, VxVM attempts to create the underlying volumes by

mirroring subdisks rather than columns if the size of each column is

greater than the value for the attribute stripe-mirror-col-split-trigger-pt

that is deﬁned in the vxassist defaults ﬁle.

If there are multiple subdisks per column, you can choose to mirror each

subdisk individually instead of each column. To mirror at the subdisk

level, specify the layout as stripe-mirror-sd rather than stripe-mirror. To

mirror at the column level, specify the layout as stripe-mirror-col rather

than stripe-mirror.