Date: Thu, 5 Apr 2007 06:52:22 -0500 From: Alexander Anderson <a.anderson@utoronto.ca> To: freebsd-questions@freebsd.org Subject: Re: Hardware Raid on Intel DG965OT Motherboard Message-ID: <20070405115222.GA6399@upful.org> In-Reply-To: <46142C3C.8070701@mawer.org> References: <461200AE.4010100@careytech.com.au> <20070404113009.GA93829@upful.org> <46142C3C.8070701@mawer.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Thu, Apr 05, 2007 at 08:52:44 AM, Antony Mawer wrote: >>I have Intel D975XBX2 with two on-board SATA RAID controllers: one is Intel >>Matrix and the other is Marvell storage. I have FreeBSD 6.2 with RAID-5 >>using Intel Matrix Storage. It seems to work fine. > > You may want to re-think that option... according to the ataraid(4) man > page, RAID5 is not functional (ie. you have about as much data safety as > a RAID0 stripe set does): > >>CAVEATS >> RAID5 is not supported at this time. Code exists, but it neither uses >> nor maintains parity information. The ataraid driver provides *software* RAID. But doesn't Intel Matrix Storage gives *hardware* RAID support? How could I tell if software is at play? > One drive failure and you will be in for a whole world of hurt... I was going to do a test and simulate a drive failure (and see how to rebuild the array). I haven't had a chance to try that yet.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070405115222.GA6399>