What Is A Disk Group On An HP SAN? Posted on by Webmaster IT Support Forum › Forums › Storage › SANs › HP › General Discussion › What Is A Disk Group On An HP SAN? Tagged: Disk Groups This topic contains 0 replies, has 1 voice, and was last updated by Webmaster 3 years, 11 months ago. Author Posts July 25, 2014 at 3:20 pm #573 WebmasterKeymaster HP SANs use the concept of Disk Groups to make accessing and writing to volumes faster. A Disk Group is basically a group of disks (hard drives) that allows one or more volumes to span across multiple disks. Author Posts You must be logged in to reply to this topic.