On Wed, Oct 19, 2011 at 9:14 PM, Albert Shih <albert.s...@obspm.fr> wrote: > Hi > > Sorry to cross-posting. I don't knwon which mailing-list I should post this > message. > > I'll would like to use FreeBSD with ZFS on some Dell server with some > MD1200 (classique DAS). > > When we buy a MD1200 we need a RAID PERC H800 card on the server so we have > two options : > > 1/ create a LV on the PERC H800 so the server see one volume and put > the zpool on this unique volume and let the hardware manage the > raid. > > 2/ create 12 LV on the perc H800 (so without raid) and let FreeBSD > and ZFS manage the raid. > > which one is the best solution ?
Neither. The best solution is to find a controller which can pass the disk as JBOD (not encapsulated as virtual disk). Failing that, I'd go with (1) (though others might disagree). > > Any advise about the RAM I need on the server (actually one MD1200 so 12x2To > disk) The more the better :) Just make sure do NOT use dedup untul you REALLY know what you're doing (which usually means buying lots of RAM and SSD for L2ARC). -- Fajar _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
