--- On Tue, 7/15/08, Edward Capriolo <edlinuxguru@gmail.com> wrote: > > GlusterFS seems really impressive. I wish I had more time > for it. Seems like you can do just about anything with it. > Network mirrors/ network stripes/ file replication. I > never benchmarked it. Once I figured out the install it > seems to be pretty easy. Funny, I found this install very easy, one of the most impressive parts of glusterfs. > DRBD has its place as a more ACTIVE/PASSIVE ACTIVE/ACTIVE > fail over solution with very low level replication. It is > not going to scale past three servers. Well, with DRBD under glusterfs volumes, it will scale as well as any non AFR glusterfs setup (since it is glusterfs). Think like this: Gluster UNIFY / | \ Vol1 Vol2... Voln | | | DRBD DRBD... DRBD | | | | | | 1A 1B 2A 2B... nA nB The real beauty of glusterfs with DRBD and vservers is the simple ability to mount a glusterfs volume on the same machine that exports it. This means that you can have a two node cluster and simply failover with DRBD from one node to the other but you can run you vservers on either node. This cannot be done safely with NFS (I tried, it resulted in intermittent lockups), although I do no know one (the) major telco provider which does exactly this (DRBD+NFS mount share on sever, no vservers), on one of its primary platforms, go figure! :) -Martin