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

This command fails if any of the following conditions are not met:
■ Each of the disks in the disk group must be registered to one of the sites.
■ Each volume in the disk group must have at least one complete plex at
each site.
■ The disk group must not contain any RAID-5 volumes.
To verify whether site consistency has been enabled for a disk group, use the
following command:
# vxdg list diskgroup | grep siteconsistent
flags: siteconsistent
5
To set the site consistency requirement when creating a volume in the disk
group, specify the siteconsistent attribute to the vxassist make command,
for example:
# vxassist [-g diskgroup] make volume size \
nmir=4 siteconsistent={on|off}
By default, a volume inherits the value of siteconsistent that is set on its
disk group. If a volume is intended to be site consistent, the number of mirrors
that are specified should be a multiple of the number of sites.
ISP saves the intent to provision volumes across sites and follows these rules
for future allocations.
Making an existing disk group site consistent
The following procedure illustrates how to make an existing disk group site
consistent.
To make an existing disk group site consistent
1
Ensure that the disk group is updated to at least version 140, by running the
vxdg upgrade command on it:
# vxdg upgrade diskgroup
2
On each host that can access the disk group, define the site name:
# vxdctl set site=sitename
3
Tag all the disks in the disk group with the appropriate site name:
# vxdisk [-g diskgroup] settag disk site=sitename
45Remote Mirror solutions
About Remote Mirror configurations