Veritas Storage Foundation Intelligent Storage Provisioning 5.0.1 Solutions Guide, HP-UX 11i v3, First Edition, November 2009

Figure 5-2
Site-consistent volume with two plexes at each of two sites
Site A Site B
Disk Group
Plex P3 Plex P4Plex P1 Plex P2
Volume V
The storage for plexes P1 and P2 is allocated storage that is tagged as belonging
to site A, and the storage for plexes P3 and P4 is allocated storage that is tagged
as belonging to site B.
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
The following procedure illustrates how to set up site-consistent ISP volumes.
43Remote Mirror solutions
About Remote Mirror configurations