On 8/3/10, Lars Hecking <lhecking at users.sourceforge.net> wrote: > What do Gluster or Lustre offer that the builtin Red Hat Cluster Suite > does not? Being a noob admin, I'm not sure and still haven't decided fully on which way to go, largely because it seems the technologies of choice are both still maturing (gluster + non-Solaris ZFS). I don't know about Rudi's requirements but in my case, having an easily expandable and high availability storage with minimum switch over time that's decoupled from the VM host machines is the objective. >From what I understand, I cannot do the equivalent of network RAID 1 with a normal DRBD/HB style cluster. Gluster with replicate appears to do exactly that. I can have 2 or more storage servers with real time duplicates of the same data so that if any one fails the cluster does not run into problem. By using gluster distribute over pairs of server, it seems that I can also easily add more storage by adding more pairs of replicate server.