On Jun 1, 2012 8:27 PM, "Glen Barber" <g...@freebsd.org> wrote: > > On Fri, Jun 01, 2012 at 11:14:10PM -0400, David Magda wrote: > > ZFS is for storing file systems on locally connected block devices. > > Gluster is a network file system where data can be distributed over > > many nodes. > > > > Pardon my ignorance to not knowing what gluster is, but is this > conceptually similar to HAST?
Similar in concept, but different layers in the storage stack. HAST sits between the physical disks and the filesystem, replicating data between two systems. So, disks -- HAST -- ZFS. Glustre sits above the storage system, replicating data between systems. So, disks -- ZFS (via Zvols) -- Glustre. The primary difference is that HAST provides only a single master node that all I/O goes through. The filesystem(s) above HAST cannot be mounted on more than one host. I/O is limited to what the master can handle. Glustre is distributed across hosts, so I/O is multiplied (to some extent), and data is accessible across multiple hosts. _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
