Veritas Storage Foundation Intelligent Storage Provisioning 5.0 Solutions Guide, HP-UX 11i v3, First Edition, May 2008

35Remote mirror solutions
About Remote Mirror configurations
Figure 5-2 Site-consistent volume with two plexes at each of two sites
Although they are not shown in this figure, DCO log volumes are also mirrored
across sites, and disk group configuration copies are distributed across sites.
The site consistency of a volume is ensured by detaching a site when its last
complete plex fails at that site. If a site fails, all its plexes are detached and the
site is said to be detached.
Setting up site-consistent ISP volumes
To set up site-consistent ISP volumes
1 Use the following command to set the site name for each host:
# vxdctl set site= sitename
The name that has been assigned to a site is stored in the /etc/vx/
volboot file, and can be displayed by using the
vxdctl list command:
# vxdctl list | grep siteid
siteid: building1
2 Tag the disks at each site that will be used for the remote mirrors with a site
name using the
vxdisk settag command as shown here:
# vxdisk [-g diskgroup ] settag disk site= sitename
where the disk can be specified either by the disk access name or the disk
media name. You need to repeat this command for each of the disks that are
to be registered to a site. Alternatively, you can specify the site when you
use the
vxdiskadm command to add the disks to the disk group.
Site A Site B
Disk Group
Plex P3 Plex P4Plex P1 Plex P2
Volume V