Date: Sat, 22 Jul 2006 20:53:49 -0400 (EDT) From: "scottd@cloud9.net" <scottd@cloud9.net> To: freebsd-hardware@freebsd.org Subject: High-availability storage Message-ID: <Pine.BSF.4.63.0607222031330.4951@earl-grey.cloud9.net>
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Greetings, I'm looking for some information on high-availability direct-attached storage with FreeBSD. To be specific, some form of RAID 6 with 12 to 16 SATA drives (500 or 750GB). We have a 2TB NetApp filer, but will soon be outgrowing it. More NetApp space would be nice, but it's expensive and not as dense (144 or 300GB SCSI drives only) as other options. Given that FreeBSD now has snapshot support, and dual parity disk setups are more common than a few years ago, it's an attractive option. What's frustrating is that none of the external SATA controllers supported by FreeBSD (Areca 1120ML, Adaptec 4805) have more than 128MB of cache. Using SATA to Fibre Channel would be the next choice, with RAID 6 being handled by the array itself (Nexsan SATABoy, for example) but FC support on FreeBSD seems limited. Any thoughts? Thanks. - Scott
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