On Sun, May 31, 2009 at 4:59 PM, <xorquew...@googlemail.com> wrote: > There is one last thing I'd like clarified. From the zpool > manpage: > > In order to take advantage of these features, a pool must make use of > some form of redundancy, using either mirrored or raidz groups. While > ZFS supports running in a non-redundant configuration, where each root > vdev is simply a disk or file, this is strongly discouraged. A single > case of bit corruption can render some or all of your data unavailable. > > Is this supposed to mean: > > "ZFS is more fragile than most. If you don't use redundancy, one > case of bit corruption will destroy the filesystem" > > Or: > > "Hard disks explode often. Use redundancy."
Unless you specify mirror or raidz on the create/add line, zfs (in essence) creates a RAID0 stripe of all the vdevs. Hence, if a single drive dies, the whole thing dies. Just like in a normal hardware/software RAID0 array. Nothing special or new here. Just like "normal" RAID, unless you add redundancy (RAID1/5/6) to a stripe set, losing a single disk means losing the whole array. -- Freddie Cash fjwc...@gmail.com _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
