Date: Thu, 2 Jan 1997 19:01:19 +0100 (MET) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-scsi@FreeBSD.org (FreeBSD SCSI list) Cc: kuku@gilberto.physik.rwth-aachen.de (Christoph Kukulies) Subject: Re: advice sought - Quantum 2GB Atlas broken Message-ID: <199701021801.TAA08251@uriah.heep.sax.de> In-Reply-To: <199701021724.SAA15524@gilberto.physik.rwth-aachen.de> from Christoph Kukulies at "Jan 2, 97 06:24:50 pm"
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(Moved to -scsi.) As Christoph Kukulies wrote: > Coming back from a short holiday I powered on a P90 machine with > (among other IDE disks) a Quantum 2GB ATLAS XP32150 and the SCSI disks > saluted with a continous one second interval clicking noise. Didn't we (Jordan?) warn you about the XP drives back in those days? :-} > Does anyone have experience with drive electronics swapping? Be careful regarding the warranty. While you could do operations of this kind during the law-enforced 6 month warranty here in Germany, any additional volunteerely warranty is at the mercy of the conditions of whoever grants it. > I suspect that the electronics stores some bad block info in some kind > of nvram on the controller board but not sure about this. Most likely, they are stored on the disk itself. I have successfully swapped drive electronics in the past. That's been on IDE drives, but the working principles of how the drives store bad sector replacement tables should be similar to SCSI. (The drives in question were an old Conner CP3040, and a Seagate ST1144A.) In case the reason for your drive breakage is a damaged detector in the drive mechanics, rather than a broken drive PCB (which is IMHO at least as likely), you might be unlucky nevertheless. In my case, it's been an electrically dead PCB (burnt power supply), and we were indeed able to successfully read the contents of the ST1144A. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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