Date: Fri, 25 Feb 2005 15:01:50 +0100 From: Oliver Brandmueller <ob@e-Gitt.NET> To: freebsd-stable@freebsd.org Subject: Re: SATA RAID Support Message-ID: <20050225140150.GB70464@e-Gitt.NET> In-Reply-To: <20050225112935.GC3258@opteron.dglawrence.com> References: <20050223204202.31797.qmail@web11604.mail.yahoo.com> <421DFC73.7060602@cs.tu-berlin.de> <013301c51a8b$ed2ad230$0300000a@Uzi> <7f6570e5997b376fb8f75d812d386264@elhombre.us> <6.2.1.2.0.20050224153015.02be6df0@64.7.153.2> <20050224233122.GD41951@e-Gitt.NET> <20050225083339.GA5014@aoi.wolfpond.org> <20050225110543.GA70464@e-Gitt.NET> <20050225112935.GC3258@opteron.dglawrence.com>
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Hi. On Fri, Feb 25, 2005 at 03:29:35AM -0800, David G. Lawrence wrote: > This sounds like a bug in the drive firmware. Did you look into any > firmware updates from Western Digital? It's possible that the 3ware > controllers push the drives a bit harder and expose problems that wouldn't > show up at slightly lower TPS rates. We suspect an incompatibility between controller and drive: The drive totally locks up at that point. But with another controller (and th ICP isn't really slower) we don't see the behaviour. I have no per disk statistics on the 3ware, so I cannot tell about the tps on a single disk compared to the ICP. We saw no firmware upgrade from WD and mail sent to them was only answered by a bot, that sent a totally useless FAQ. > We (TeraSolutions and Download Technologies) have deployed the 3ware > 9500S controllers extensively and haven't seen any problems with the 7k250 > and 7k400 series Hitachi drives that we use with them. We have the 7506 with 7200 PATA drives and have no problem at all with them. The only time a disk failed in that setup, that was really a failing disk. Rebuild worked as expected in the prod system; of course we check every new system for a working rebuild by removing a disk or even sometimes by building a RAID on a known bad disk. - Oliver -- | Oliver Brandmueller | Offenbacher Str. 1 | Germany D-14197 Berlin | | Fon +49-172-3130856 | Fax +49-172-3145027 | WWW: http://the.addict.de/ | | Ich bin das Internet. Sowahr ich Gott helfe. | | Eine gewerbliche Nutzung aller enthaltenen Adressen ist nicht gestattet! |
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