Veritas™ Volume Manager Administrator's Guide

Creating a striped volume

A striped volume contains at least one plex that consists of two or more subdisks located on two or more physical disks. A striped volume requires space to be available on at least as many disks in the disk group as the number of columns in the volume.

To create a striped volume, use the following command:

# vxassist [-b] [-g diskgroup] make volume length layout=stripe

Specify the -b option if you want to make the volume immediately available for use.

For example, to create the 10-gigabyte striped volume volzebra, in the disk group, mydg, use the following command:

# vxassist -b -g mydg make volzebra 10g layout=stripe

This creates a striped volume with the default stripe unit size (64 kilobytes) and the default number of stripes (2).

You can specify the disks on which the volumes are to be created by including the disk names on the command line. For example, to create a 30-gigabyte striped volume on three specific disks, mydg03, mydg04, and mydg05, use the following command:

# vxassist -b -g mydg make stripevol 30g layout=stripe \
  mydg03 mydg04 mydg05

To change the number of columns or the stripe width, use the ncolumn and stripeunit modifiers with vxassist. For example, the following command creates a striped volume with 5 columns and a 32-kilobyte stripe size:

# vxassist -b -g mydg make stripevol 30g layout=stripe \
  stripeunit=32k ncol=5