[comp.unix.xenix] SCO - Two harddisk controllers

mark@promark.UUCP (Mark J. DeFilippis) (09/30/89)

I found some useful information on my trek to get two controllers working,
and I thought it would be useful to some others out there judging from
previous articles that incorrectly identify controller types.
I know it was useful to myself :

WESTERN DIGITAL:

CONTROLLER	CLASS	TYPE		INTERLEAVE

WD-GEN2		XT	Dual HD MFM	3:1
WD=WX1		XT	Dual HD MFM	3:1
WD-3VMM1	AT	Dual HD MFM	2:1
WD-3VMM2	AT	Dual HD/FD MFM	2:1
WD-6VMM1	AT	Dual HD MFM	1:1
WD-6VMM2	AT	Dual HD/FD MFM	1:1

ST-A27X		XT	Dual HD RLL
WD-3VSR1	AT	Dual HD RLL	2:1
WD-3VSR2	AT	Dual HD/FD RLL	2:1
WD-6VSR1	AT	Dual HD RLL	1:1
WD-6VSR2	AT	Dual HD/FD RLL	1:1


ADAPTEC

CONTROLLER	CLASS	TYPE		INTERLEAVE

2072		XT	Dual HD RLL
2370		AT	Dual HD RLL	1:1
2372		AT	Dual HD/FD RLL	1:1
2310		AT	Dual HD MFM	1:1
2312		AT	Dual HD/FD MFM	1:1
2322		AT	Dual HD/FD ESDI	1:1


Sorry, no SCSI or other ESDI Info.

-- 
Adelphi University, Garden City, NY 11530                   (516) 663-1170
Department of Mathematics and Computer Science
                                 markd@adelphi.UUCP  or  mark@promark.UUCP
                      UUCP:      ...philabs!sbcs!bnlux0!adelphi!markd

davidsen@crdos1.crd.ge.COM (Wm E Davidsen Jr) (10/03/89)

In article <181@promark.UUCP>, mark@promark.UUCP (Mark J. DeFilippis) writes:
|  I found some useful information on my trek to get two controllers working,
|  and I thought it would be useful to some others out there judging from
|  previous articles that incorrectly identify controller types.

	[ ton of neat stuff deleted ]

If you still have all that stuff handy, could I ask for a repost telling
which controllers have hardware buffering and which use the BIOS? I
found that the Adaptek 2372 was a factor of three slower than the
WD1006CSR2 because Xenix doesn't use the BIOS. My understanding is that
some flavors of UNIX do software track buffering on any controller
(which takes CPU) and some just use the controller, in which case the
hardware is faster.

That was a bundle of info!
-- 
bill davidsen	(davidsen@crdos1.crd.GE.COM -or- uunet!crdgw1!crdos1!davidsen)
"The world is filled with fools. They blindly follow their so-called
'reason' in the face of the church and common sense. Any fool can see
that the world is flat!" - anon

bote@csense.UUCP (John Boteler) (10/05/89)

From article <728@crdos1.crd.ge.COM>, by davidsen@crdos1.crd.ge.COM (Wm E Davidsen Jr):...
> I found that the Adaptek 2372 was a factor of three slower than the
> WD1006VSR2 because Xenix doesn't use the BIOS.

Add to the list the DTC728x track buffering controller. Works
wonders under DOS, but Xenix cannot take advantage of it for
precisely the reason you cited. That's why we switched to
the VSR1 and VSR2 for Xenix use. All other applications do
fine with the DTC series, I have found.

-- 
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