Date: Fri, 23 Jun 2000 10:32:46 -0700 From: Greg Lehey <grog@lemis.com> To: Jerry Dunham <jdunham@fc.net> Cc: Jan Mikkelsen <janm@transactionsite.com>, freebsd-questions@FreeBSD.ORG Subject: Re: Tandem?? Message-ID: <20000623103246.B431@sydney.worldwide.lemis.com> In-Reply-To: <200006230124.UAA97545@freeside.fc.net> References: <005401bfdcae$989f2510$0801a8c0@janm.transactionsite.com> <200006230124.UAA97545@freeside.fc.net>
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On Thursday, 22 June 2000 at 20:24:09 -0500, Jerry Dunham wrote: > Jan Mikkelsen babbled: >> Date: Fri, 23 Jun 2000 11:01:43 +1000 > >> A quick search of the Tandem website revealed the document: >> >> http://www.tandem.com/misc/hpmlsm/hpmlsm.pdf >> >> which shows that they FCSd in 1995, and are an actively supported product. >> You might be able for find some documentation on the website. Tandem >> probably did custom firmware, but they do have machines with SCSI, so they >> should at least work. Good luck. > > Yes, Tandem did custom firmware for these IBM drives. My memory apparent- > ly failed me and I mentally swapped this drive with another I was thinking > was a huge pain to get working. Greg has reminded me that it was THIS one > that caused all the pain. It has worked without a hitch ever since, so it > can at least be said to be reliable once reformatted. Mine is attached to > an ancient Dell 486 via SCSI. And mine was one we used for drop testing, > so it had a hard life before it landed here. The real issue here is that the drives have a non-standard sector size--518, 520 or 524 bytes. You need to reset the sector size and low-level format the drives. Here's a reference ======================================================================== Yup, there's some other way to change it. Set the current values, then immediately issue a format command: # camcontrol cmd da1 -v -c "15 10 0 0 v:i1 0" 12 -o 12 "0 0 0 8 0 0:i3 0 v:i3" 512 # camcontrol cmd -n da -u 1 -v -t 7200 -c "4 0 0 0 0 0" # camcontrol modepage da1 -m 3 Tracks per Zone: 19 Alternate Sectors per Zone: 12 Alternate Tracks per Zone: 0 Alternate Tracks per Logical Unit: 38 Sectors per Track: 84 Data Bytes per Physical Sector: 512 Interleave: 1 Track Skew Factor: 13 Cylinder Skew Factor: 22 SSEC: 0 HSEC: 1 RMB: 0 SURF: 0 ======================================================================== RTFM for more details. Greg -- When replying to this message, please copy the original recipients. For more information, see http://www.lemis.com/questions.html Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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