To turn on the site-based allocation requirement for a site that is registered to a disk group, use the
addsite command for each site at which site-based allocation is required:
Each volume on which the
allsites attribute is set to
on is checked to ensure that it has at least one plex at each site, and the command fails if this condition is not met. If the
-f option is specified, the command does not fail, but instead it sets the
allsites attribute for the volume to
Provided that the Site Awareness license is installed on all the hosts in the Remote Mirror configuration, a volume is automatically mirrored across sites and its read policy is set to
siteread when it is created. If site-based allocation is not required, or is not possible (as is the case for RAID-5 volumes), specify the
allsites=off attribute to the
To remove the site-based allocation requirement from a site, use this command:
-f option allows the requirement to be removed if the site is detached or offline.
The site name is not removed from the disks. If required, use the
rmtag command to remove the site tag.
See "Configuring sites for hosts and disks" on page 436.