So far I heard a lot about GlusterFS and Ceph being great but so far I only seen MooseFS in production. MooseFS seems to do its job well, the only problem is t

So far I heard a lot about GlusterFS and Ceph being great but so far I only seen MooseFS in production. MooseFS seems to do its job well, the only problem is that by default it lacks HA. The master server is very important since it keeps track of where all data is located, so if it is gone your data is gone. You can set up one or more metalogger nodes, which sole purpose is to backup the metadata information. You can also manually promote metalogger to master. They have commercial offering that includes HA, but I never used so hard to comment about it. You could also set up HA yourself using corosync and peacemaker, but it's a bit challenging task.