[2852] in linux-scsi channel archive
Re: Micropolis
daemon@ATHENA.MIT.EDU (Leonard N. Zubkoff)
Sun Nov 23 03:31:06 1997
Date: Sun, 23 Nov 1997 00:28:16 -0800
From: "Leonard N. Zubkoff" <lnz@dandelion.com>
To: groudier@club-internet.fr
CC: jhm@umr.edu, linux-scsi@vger.rutgers.edu
In-reply-to: <Pine.LNX.3.95.971122205045.2884A-100000@localhost> (message from
Gerard Roudier on Sat, 22 Nov 1997 21:34:06 +0100 (MET))
Date: Sat, 22 Nov 1997 21:34:06 +0100 (MET)
From: Gerard Roudier <groudier@club-internet.fr>
I know this should be ok, but I never tried it.
Using fdisk expert commands under Linux allows to change disk parameters.
Even if X3T9 SCSI2 CAM Annexe A is only informative, it is part of a
standard. Standards allow differentiation and avoid messing up the
technology to which they apply.
BusLogic and Adaptec have probably good reasons to stick with proprietary
stuff, probably the same as Mr Gate$'$ one$. :)
But since they very probably participate to X3/T9/T10 (at least Adaptec),
they are in the ridiculous situation of not applying their own standards.
Just, my opinion. But I agree that your pragmatic advice is very usefull.
BTW, I heard that the Tekram DC-390/U/F (SYM53C875) BIOS and drivers use
Adaptec like disk geometry. Is it true ?
I believe that both BusLogic and Adaptec each had their own forms of extended
translation in place *years* before the above standard was published. The last
draft of the main SCSI-2 spec shows a date of 7-Sep-93, so the CAM spec is
unlikely to be older than that. Personally, I would like to see them both use
the CAM spec while still recognizing disks with the previous mappings.
I have no information about the Tekram cards.
Leonard
