Date: Fri, 25 Feb 2005 12:18:51 -0800 From: "David G. Lawrence" <dg@dglawrence.com> To: Francois Tigeot <ftigeot@wolfpond.org> Cc: freebsd-stable@freebsd.org Subject: Re: SATA RAID Support Message-ID: <20050225201851.GI5033@opteron.dglawrence.com> In-Reply-To: <20050225200656.GG5033@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> <20050225180701.GB6633@aoi.wolfpond.org> <20050225200656.GG5033@opteron.dglawrence.com>
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> > > Under heavy load (I/O load on the disks constantly over 200 tps, average > > > at about 250 tps, peaks over 600 tps) a random drive disconnects from > > > the RAID 10. After removing the drive from the config and rescanning the > > > bus, the drive does not show up anymore. The only way to get the drive > > > back is to unplug the drive (or switch the computer off, so that power > > > is removed). After that there is no problem to rebuild the RAID with > > > the drive. > > > > Interesting. AFAIR the same sort of errors occured with some older WD > > drives and 3Ware 750x controllers. > > The solution was to flash the drives firmware. > > > > A quick googling found some reference to the problem on this document: > > http://japan.3ware.com/products/pdf/Drive_compatibility_list.pdf ...and here is even more information about the problem: Question Why do EIDE drives disappear from the IDE RAID array or system after a short period of error-free operation? Affected drives: WD EIDE drives with capacities between 40GB & 120GB WD EIDE drives with greater than 120GB capacity with a date earlier than 3/25/03. Answer Problem: WD EIDE drives are dropped from an IDE RAID array or system after several days or weeks of error-free operation. Solution: The problem is a result of a feature that reduces idle acoustic noise in desktop drives. This feature may cause a timeout likely (though not exclusively) in an IDE RAID environment. To disable the feature, you can run a simple Western Digital utility to turn off a single bit in the drives run-time configuration. Disabling of this feature will NOT impact normal system operations. No firmware or hardware changes are required. IDE Upgrade Utility (Non-3Ware controller cards) For all configurations other than 3Ware controller cards, download the IDE Upgrade Utility for the Desktop PC. 3Ware controller cards If you are using one or more 3Ware controller cards in an IDE RAID configuration, download the IDE RAID Compatibility Upgrade Utility for 3Ware 7500-X controllers cards. -DG David G. Lawrence President Download Technologies, Inc. - http://www.downloadtech.com - (866) 399 8500 TeraSolutions, Inc. - http://www.terasolutions.com - (888) 346 7175 The FreeBSD Project - http://www.freebsd.org Pave the road of life with opportunities.
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