Date: Mon, 15 Apr 2002 04:43:00 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: sos@freebsd.dk Cc: Giorgos Keramidas <keramida@ceid.upatras.gr>, Alexander Leidinger <Alexander@Leidinger.net>, dwcjr@inethouston.net, current@FreeBSD.ORG, sos@FreeBSD.ORG Subject: Re: ATA errors on recent -current Message-ID: <3CBABCC4.17211012@mindspring.com> References: <200204150721.g3F7LDS07711@freebsd.dk>
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"S=F8ren Schmidt" wrote: > > Is your drive perchance an IBM DTLA? > > > > It's known to have these problems. > = > Cool! would you like to share where that information is available so > I can possibly work around the problem ?? IBM DTLA drives are known to be problematic. If you use that in a search engine, it will find numerous references to the drive electronics being too slow for sustained access to the sectors closes to the spindle. The place I first read about the problem was Tom's hardware. The generally accepted fix is "don't use the cylinders nearest the spindle" and/or "replace the drive". Here's the most complete (if biased) web reference I found: http://www.goldengate.net/~dlpeters/IBMSucks/ This has been discussed on the FreeBSD lists before... the supposed problem cited was "the electronics could not keep up with the data rate on the interior cylinders". Supposely, one of the utilities on this page: http://www.axiontech.com/cgi-local/download.asp?product=3Dhdibmutil&har= d_drives can work around the problem (depending on the drive you have) by changing some firmware settings on the drive. If you are interested, get them while you can: this is a mirror of an IBM set of downloads which are no longer available from the IBM URLs where they used to be located. The workaround works by setting a lower DMA transfer rate. Here is a PDF about the drives, which mentions the tool and its use: http://vendors.asbis.com/download/D60GXP_ht20.pdf Again, this is mirrored from an IBM URL that is no longer available, so if you intend to grab it, grab it now. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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