If consistency and reliability matters I would probably avoid GlusterFS like the plague. (things may have changed now but I worked with it in a petabyte scale b

If consistency and reliability matters I would probably avoid GlusterFS like the plague. (things may have changed now but I worked with it in a petabyte scale bioinformatics cluster and it was not fun) Look at Ceph if you want to store files in a consistent and distributed fashion. Not the filesystem though, the object store (RADOS).