Veritas Volume Manager 5.0 Administrator's Guide (September 2006)

238 Creating volumes

Creating a volume on specific disks

mirrors of these columns are then similarly formed from disks mydg05 through mydg08.

This arrangement is illustrated in Figure 7-3.

Figure 7-3 Example of using concatenated disk space to create a mirrored-stripe

volume

Other storage specification classes for controllers, enclosures, targets and trays can be

used with ordered allocation. For example, the following command creates a 3-column

mirrored-stripe volume between specified controllers:

# vxassist -b -g mydg -o ordered make mirstr2vol 80g \

layout=mirror-stripe ncol=3 \

ctlr:c1 ctlr:c2 ctlr:c3 ctlr:c4 ctlr:c5 ctlr:c6

This command allocates space for column 1 from disks on controllers c1, for column 2

from disks on controller c2, and so on as illustrated in Figure 7-4.

Mirrored-stripe volume

Striped plex

Mirror

Column 1

Column 2

mydg01-01

mydg02-01

mydg05-01

mydg06-01

mydg03-01

mydg04-01

mydg07-01

mydg08-01