To configure VxVM diskgroups for campus cluster configuration

1. Set the site name for each host:

   vxdctl set site=sitename
   

   The site name is stored in the /etc/vx/volboot file. Use the following command to display the site names:

   vxdctl list | grep siteid
   

2. Set the site name for all the disks in an enclosure:

   vxdisk settag site=sitename encl:enclosure
   
   

   To tag specific disks, use the following command:

   vxdisk settag site=sitename disk
   

3. Verify that the disks are registered to a site.

   vxdisk listtag
   

4. Create a diskgroup with disks from both the sites.

   vxdg init diskgroup siteA_disk1 siteB_disk2
   
   

5. Configure site-based allocation on the diskgroup that you created for each site that is registered to the disk group.

   vxdg -g diskgroup addsite sitename
   

6. Configure site consistency on the diskgroup.

   vxdg -g diskgroup set siteconsistent=on
   

7. Create one or more mirrored volumes in the disk group.

   vxassist -g diskgroup make volume size
   
   

   With the Site Awareness license installed on all hosts, the volume that you create has the following characteristics by default:

   • The allsites attribute is set to on; the volumes have at least one plex at each site.

   • The volumes are automatically mirrored across sites.

   • The read policy rdpol is set to siteread.

   • The volumes inherit the site consistency value that is set on the diskgroup.