HP Veritas Volume Manager 5.0 -UX 11i v3 manual Examples of storage allocation using sites

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Administering sites and remote mirrors

Site-based allocation of storage to volumes

Examples of storage allocation using sites

The examples in the following table demonstrate how to use site names with the vxassist command to allocate storage. The disk group, ccdg, has been enabled for site consistency with disks configured at two sites, site1 and site2.

Command	Description
# vxassist -g ccdg make vol 2g \	Create a volume with one mirror at each
nmirror=2	site. The value of nmirror must be greater
	than or equal to the number of sites unless
	allsites is set to off.

#vxassist -g ccdg -o ordered \ Create a mirrored-stripe volume specifying

make vol 2g \	allocation order to validate redundancy
layout=mirror-stripe ncol=3 \	across the sites. The named disks must be
ccdg01 ccdg02 ccdg03 ccdg09 \	tagged with the appropriate site name, and
ccdg10 ccdg11	there must be sufficient disks at each site to
	create the volume.

#vxassist -g ccdg make vol 2g \ Create a volume with one mirror at each of

nmirror=2 mirror=site	\	the named sites. All sites must be named
site:site1 site:site2		and the value of nmirror must be greater
		than or equal to the number of sites unless
		allsites is set to off.

#vxassist -g ccdg make vol 2g \ Create a volume with one mirror on each of

nmirror=2 ccdg01 ccdg09	the named disks. The named disks must be
	tagged with the appropriate site name, and
	there must be sufficient disks at each site to
	create the volume.
# vxassist -g ccdg make vol 2g \	Create a mirrored volume that is not site
nmirror=2 siteconsistent=off \	consistent. Both mirrors can be allocated
allsites=off	from any available storage in the disk
	group.
# vxassist -g ccdg make vol 2g \	Create a mirrored volume that is not site
nmirror=2 site:site2 \	consistent. Both mirrors are allocated from
siteconsistent=off \	any available storage in the disk group that
allsites=off	is tagged as belonging to site2.
# vxassist -g ccdg make vol 2g \	Create a mirrored volume that is not site
nmirror=2 !site:site1 \	consistent. Both mirrors are allocated from
siteconsistent=off \	any available storage in the disk group that
allsites=off	is tagged as not belonging to site1.
# vxassist -g ccdg mirror vol \	Add a mirror at a specified site. The
site:site1	command fails if there is insufficient
	storage available at the site.