HDTenEightyP/NetNews huggingface dataset:
From: Frank Hoffmann <fh.pad@sni.de>
Subject: Re: SCSI, FastSCSI, SCSI-2: What are the differences?
Organization: Siemens Nixdorf Info.Sys. AG, Paderborn, Germany
Date: Sun, 11 Oct 1992 10:57:26 GMT

dlparker@dlpinc00.rn.com (David L. Parker) writes:

>In article <56460@olivea.atc.olivetti.com> dcrocker@cisco.com (Dan Crocker) writes:
>>
>>As for the AHA1542B, don't bother with it in my opinion. It is about 5 year
>>old technology and doesn't support any of SCSI-2.  Also, I bought one and
>>had lots of trouble with it.  There's been a lot of discussion here about
>>

>You didn't specify OS, but I've used the 1542B fairly extensively under both
>MS-DOS 5.0 and ISC UNIX SVR3, ver 2.2 & 3.0, and have never had any trouble.

Same experience here ... We use 1542B extensively with DOS 5.00 & 6.00, SCO
ODT 1.1 & 2.0 and AT&T V.4. By now we had only one problem with 1 controller
which wasn't very happy if we disconnected the external jack during runtime.

But anyway we're really satisfied with all the others, 'cause they are known
by all the above mentioned OS and do a godd job here (even if they don't
support SCSI-2 specs :-))

>From what I've read on the net, many of the apparent problems with the 1542B
>appear to have actually been driver problems or borderline motherboards.
>-- 
>Dave Parker
>Automated Data Management Services, Pleasant Hill, MO 64080-1331
>(816) 987-5167/5218 voice/fax

regards
frank
-------------------------------------------------------------------------------
    __________                  Frank Hoffmann
     /             /    Siemens-Nixdorf Info. Systems Voice: [+49] 5251 812 209
    /__           /      Dept: AP 52 / SW-Production    Fax: [+49] 5251 811 599
   /' _  _   __  //            Fuerstenallee 7          USA: fh.pad@sni-usa.com
__/__/__(_(_/ /_/^\__    W-4790 Paderborn / Germany    !USA: fh.pad@sni.de
-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
Newsgroups: comp.periphs.scsi
From: vsuzuki@amaebi.cs.uec.ac.jp (Suzuki Mitsugu)
Subject: Help! ACB-4010 defect managemant
Organization: The University of Electro-Communications, Tokyo, Japan.
Distribution: comp
Date: Mon, 12 Oct 1992 04:34:39 GMT

HELP ME!

I use ACB-4010 (Adaptec) SCSI-ST506 controller.
I added new drive (ST-251) and format it by my program.
(run on ST-01 SCSI host adaptor)
But the new drive has more defects than described in it's
"DEFECT LIST LABEL".
I know how to (phisically) format with defect list in 
c/h/bfi form, but I do not know how to REASSIGN defect 
block in logical block number form after phisical 
formatting. (The defects are detected with "verifi" command.)
It seems that this controller do not accept CCS type defect
block reassign command and data structures.

I want to know "REASSIGN BLOCK" command code and the data structure.

Thanks a lot.

+-------------------------------------------------+
+                                                 +
+     Mitsugu Suzuki (vsuzuki@cs.uec.ac.jp)       +
+                                                 +
+     Computer Science department of              +
+     University of Electro Communications        +
+                                                 +
+     1-5-1 Chofugaoka, Chofu-si, Tokyo 182,      +
+     Japan                                       +
+                                                 +
+-------------------------------------------------+
From: dcrocker@cisco.com (Dan Crocker)
Newsgroups: comp.periphs.scsi
Subject: Re: SCSI, FastSCSI, SCSI-2: What are the differences?
Date: 9 Oct 92 19:51:40 GMT
X-Newsreader: TIN [version 1.1 PL6]

As far as I understand, the differences/characteristics are as follows:

SCSI:	The original SCSI, 4MB/SEC maximum transfer rate
SCSI-2:	The follow-on scsi spec.  It has additional software functionality
	defined like command tagging (to allow the drive to re-order commands).
	I think it also defines improvements to the data transfer rates over
	the SCSI bus.  There was an increase in the speed at which data
	transfers can occur and provisions for making 16-bit and 32-bit
	wide versions.  All of this means that with 8-bit data width, you can
	get 10 MB/SEC.  The maximum is 40 MB/SEC if you go to 32-bit wide
	data path (4*10).

FastSCSI: Probably refers to the 10MB/SEC transfer rate support.

When talking about SCSI-2, you have to be a little careful.  Many peripherals
claim to be SCSI-2 compatible.  A lot of times they mean that they support the
software (command) extensions in the SCSI-2 spec but it doesn't necessarily
mean they support the faster data transfer rates.  Look carefully!

As for the AHA1542B, don't bother with it in my opinion. It is about 5 year
old technology and doesn't support any of SCSI-2.  Also, I bought one and
had lots of trouble with it.  There's been a lot of discussion here about
Adaptec's technical support (or lack of).  I have an Ultrastor 14F and am very
happy with it.  It does support SCSI-2 command extensions and 10MB/SEC.

Dan

Hans Schligtenhorst (hansen@jupiter.rz.Uni-Osnabrueck.DE) wrote:
: Hello,
: 
: I'm going to buy a new SCSI-hd and I'm very confused about the new hds:
: SCSI
: FastSCSI (e.g. Fujitsu M2623FA)
: SCSI-2
: 
: What are the differences (please understandable for a hardware-newbee) and (more
: important) can I connect these disks to an AHA1542B?
: 
: Thanks in advance
: 
: Hans
: --
: Hans Schligtenhorst
: schlighw@dosuni1.rz.uni-osnabrueck.de
Newsgroups: comp.periphs.scsi
From: ghenniga@NMSU.Edu
Subject: Re: TK50 & Adaptec 1542B?
Reply-To: ghenniga@NMSU.Edu
Organization: New Mexico State University - Electromagnetics Group
Date: Mon, 12 Oct 1992 18:00:42 GMT


In an article terry@spcvxb.spc.edu (Terry Kennedy) writes:
>In article <GHENNIGA.92Oct7220611@ampere.ampere>, ghenniga@NMSU.Edu writes:
>> 	Is there any way to run a DEC TK50 SCSI tape drive on a PC equipped
>> with an Adaptec 1542B? I'm running OS/2 2.0 and have a serious need to do
>> a backup but with no money I thought I could borrow one of our old TK50's
>> from the University! Good idea but will it work???
>
>  TK50's aren't SCSI. They're a funky dual-serial bus. There is a TK50Z,
>which has an external funk-to-SCSI adapter. There are two versions of the
>PROMs for this adapter - one for use with the MicroVAX 2000 (which is best
>described as "a not completely unsuccessful attempt at SCSI") and another
>for use with the MicroVAX 3100 family. The latter should work.
>
>  The TZ30 is a native SCSI half-height implementation which is everything
>the TK50 isn't. An excellent drive. I'd suggest using one of those if at
>all possible.

Terry,

	Thanks for the info. I was aware  that the TK50 from a uVax 2000
wasn't SCSI but this one was off of a DecStation 3100 and is definately SCSI.
I should've mentioned this  in my original post.
	The reason for this being a  post, as opposed to an email reply, is
that I wanted to let anyone interested know that it worked! It's flaky and
it took me about 4 hours to realize that the software I use wanted an
end-of-file mark at the beginning of the tape in order to work, but it
eventually worked. It also took me about 10 hours to back up 160MB or so
but since performance isn't an issue (COST IS) this was'nt a problem.
	Does anyone know what a used SCSI TK50, off of a Dec or Vax station
3100, goes for, or the TZ30 Terry mentioned? I'd really like to get my own
tape drive with at least 60MB media and VERY cheap. As I said speed isn't
an issue, just SCSI compatibility and no problems with an Adaptec 1542B.

Thanks to those who helped!
Gary Hennigan
---------
PhD Student, Computational Electromagnetics
New Mexico State University
email: ghenniga@NMSU.Edu
Newsgroups: comp.periphs.scsi,comp.sys.next.sysadmin,comp.sys.next.hardware
From: milton@teal.csn.org (Milton Scritsmier)
Subject: Re: Incomplete transfers on the SCSI bus
Organization: Colorado SuperNet, Inc.
Date: Sun, 11 Oct 1992 05:46:07 GMT

In article <e6so02jx24js01@JUTS.ccc.amdahl.com> kls30@cd.amdahl.com (Kent L. Shephard) writes:
>I have a Micropolis 1588 - 669MB drive.  I have a problem.
>When this drive is sharing the bus I get incomplete transfer error messages.
>This also hoses the UNIX file system on the disk during boot.
>If the drive is on the bus by itself I don't get any problems.
>If the onther device is on the bus alone I don't get any errors.
>
>ANyone have any idea of the problem and/or how to solve it.
>This happens no matter what the second device is.  It has happened
>with just about every device I've tried.  These devices include a SUN CD-rom,
>Quantum LPS-105, and a PLI CD-rom.  THe only device that has been able
>to work with the drive has been a Maxtor 200MB hard drive.
>
>BTW - The system is a NeXTcube with 16MB of ram.
>

Sounds like you have a noise problem. If the noise produces extra
ACKs or REQs, then either the initiator or target will think more
bytes have been transferred than actually were. If you are doing a
write to the target, for example, and there is noise on the ACK line,
then the target will think more data has been transferred than actually
was. As a result, it will go to status phase to end the command sooner
than the host expects, giving an incomplete transfer.

One likely source of the problem is that both of your target devices
have terminators installed. If this were so, then everything would work
OK with just one device on the bus.

Another cause of the problem is that both targets have the same ID, and
both respond to selection by the initiator for that ID. Believe it
or not, you can get quite far into a SCSI command before there is a
clash. In this case both devices may be sending out REQs to the
initiator's ACKs, and thus not change into status phase when
the host expects the phase to change. Some systems may interpret this
as an "incomplete transfer".

Another, much less likely source of the problem is that the SCSI
drivers on the two targets just don't get along. This used to be
a problem in the early days of SCSI, but I haven't seen it for a
long time now.
From: haerter@elysium.novalis.public.sub.org (Otto Haerter)
Newsgroups: comp.periphs.scsi
Subject: CD-ROM and Streamer
Distribution: world
Date: Tue, 06 Oct 92 02:17:52 GMT
Organization: Otto_s private site

I have an ADAPTEC 1542 B and in the AT 386 tower
HD 			ID 0
HD			ID 1
SYQUEST			ID 2
and in extern cases
NEC-CDR-73 CD-ROM	ID 3
WANGTEC 525 MB Streamer	ID 4
Under MS-DOS 5.0 with QEMM 6.0 
(with ASPI4DOS.SYS, ASPIDISK.SYS and ASWNEC.SYS) the tape 
works fine with GTAK from Andrewas Kaiser, but there is an error message,
if the the CD-ROM-driver is loaded, "missing an SCSI-device", or similar.
Under OS/2 2.0 there is the same problem.
If I dissconnect the tape from the SCSI-bus, the CD-ROM works without any
problem.
Is it impossible to have a CD-ROM and a Streamer on one ADAPTEC 1542 B ?
Any suggestions ?
Otto
======================================================================
  Otto Haerter    |  Usenet   : haerter@elysium.novalis.public.sub.org
Dresdener Str.35  |  FIDO-Netz: 2:244/7054.1
7032 Sindelfingen | Tel:07031-873327 <-- FAX von 14.00 bis 18.00

Newsgroups: comp.periphs.scsi
From: clear@cavebbs.welly.gen.nz (Charlie Lear)
Subject: Caching and ASPIDISK.SYS: summary
Organization: The Cave MegaBBS, Public Access Usenet, Wellington, NZ
Keywords: adaptec,aspidisk,scsi,cache
Date: Sun, 11 Oct 92 10:40:49 GMT

Thanks for the postings and email.

To briefly summarise:
If you have more than two physical hard disks in your system, and the
third and subsequent disks are accessed by ASPIDISK.SYS, then the only
software disk cache found to work reliably with the ASPIDISK-driven
partitions is Norton's Disk Cache v 6.00 and above.

I had Norton's 4.5, and tried Hyperdisk, Lightning, Smartdrv and PC-Cache.

NCACHE works a treat.  Now all I have to do is figure out the optimum 
settings to get the best hit rate...

-- 
Charlie "The Bear" Lear | clear@cavebbs.welly.gen.nz | Kawasaki 750GT DoD#0221
Databits Computer Co / Shareware Distribution NZ        Ph/Fax  +64 4 564-5307 
PO Box 2009, Wellington, New Zealand        The Cave MegaBBS +64 4 5642269 V32
From: slam@desire.wright.edu
Newsgroups: comp.periphs.scsi
Subject: Need Adaptec UPGRADE.EXE via FTP
Date: 15 Oct 92 00:02:57 EST
Organization:  Wright State University 

Can anyone point me to an ftp source where I can obtain Adaptec's
UPGRADE program for their drivers? I have dialled their FTP site
but the file is too big to warrant downloading at 2400 BAUD.

Thanks!

SC Lam - slam@eve.wright.edu
From: terry.harris@almac.co.uk
Newsgroups: comp.periphs.scsi
Subject: eisa scsi host adapt
Date: 15 Oct 92 22:13:28 GMT
Distribution: comp
Organization: ALMAC BBS Ltd

Hi Mike + All

Mike Lainhart wrote:-

ML>A few days ago I posted a request for some feedback about EISA SCSI
  >host adapters because I was having a very frustrating experience with
  >Adaptec customer support trying to get their 1742A working in my ALR
  >Business VEISA.

I have also just spent three weeks trying to get an AHA1742A working in
my Dell 433TE. I guess I spent about $40 in phone calls to their tech
support and never spoke to anyone, I left a recorded message and my
number three times and didn't get any return calls.

What problems did you have? I had:-

Hassle with the EISA config never coming back with what I set in enhanced
mode, Trouble with the BIOS corrupting the screen during boot in standard
mode but only if I had my external WORM drive turned on. The thing didn't
work with the WORM and Corel SCSI in enhanced mode. And worst of all I had
extremely pattern sensitive data corruption, like 5 bytes in 90Mb of files
although I could create a test file which would give ten errors in the first
1k. (The pattern was four bytes of 00's followed by 4 bytes of ff's repeating,
however it wasn't just driving all 32 bit's of zero to 32 1's it needed to
be surrounded by the same or similar patterns, makes me thing it's some
sort of RAM crosstalk problem, (I did swap SIMMS on the motherboard)).

Of course I might have a faulty motherboard <sigh>.

  >Now I am begging for some information so I can make
  >a better choice this time.

I am also very interested, I tried an AMI fast disk, that didn't work at all
with the WORM. All the software was still beta, I sent it back. I would
probably give it some time to settle before risking it.

I have no experience of other models but a few other names:-

Data Technology Corp DTC3290
Mylex DCE376

Bustek and Ultrastore do something, Promise Technology have a new one
after Comdex, and I heard Future Domain have a new one coming as well.

Cheers Terry...
---
 ~ OLX 2.2 ~ terry.harris@almac.co.uk
--
ALMAC BBS Ltd. 0324-665371
Dos based USENET access,  call for details!
Newsgroups: comp.periphs.scsi
From: koch@eis.cs.tu-bs.de (Andreas Koch)
Subject: Current price of 60MB+ DC6xx SCSI streamers?
Organization: TU Braunschweig,Informatik,EIS,West Germany
Date: Tue, 13 Oct 1992 12:55:09 GMT

The subject basically says it all. I am interested in buying a couple
of streamers for use with Macintoshes and would like to know what the
going price for the 60 MB models is. Since the Mac has internal SCSI
(at least that's what Apple calls it, I am not too sure it is the real
thing :-) I don't need PC interface cards, just the raw, external
streamer unit. I would be grateful for any addresses of reliable companies
that deal in such devices (I don't mind doing business with overseas
companies).

Thanks in advance,
	Andreas Koch
From: sp_pm@space.alcbel.be (Paul Moore)
Newsgroups: comp.periphs.scsi
Subject: Wanted: Advice about SCSI peripherals
Date: 8 Oct 92 18:21:22 GMT
Article-I.D.: space.9210081621.AA02202
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X-To: comp.periphs.scsi.usenet


Hello,

At last, I have decided to upgrade my 386 machine, running ISC 2.2.1 unix,
and I would welcome some advice concerning upgrading the hard disk, and 
also tape backup, in both cases using SCSI peripherals.

My present hard disk is a 140 Mbyte IDE drive. If I upgrade to SCSI, will
a SCSI drive be able to coexist under UNIX with the existing IDE drive? 
If so, will I be able to physically install it, for example in one of the
spare slots, because otherwise there simply isn't enough spare space in
the box? In terms of SCSI disk capacity, I'm thinking in terms of about
300 Mbyte.

I would also like to install a SCSI tape drive. I know even less about
tape backup than I do about SCSI disks, but I understand that there are
several formats in use. Which one is best? Also, again, space may be a
problem, although there is a vertically-oriented knockout-panel available,
of about the same size as that required for a 3.5" floppy disk drive. 
Would I be able to use this space for a tape drive?

Finally, the SCSI controller, which do I need, 16-bit or 8-bit? Apart from
speed of operation, does it matter?

So, I suppose my request boils down to the following:
1. Can I install a SCSI hard disk and tape backup, while still using my 
   IDE disk drive?
2. Which type of SCSI controller and format of tape backup do I need?
3. Which brands and models are recommended?

All help and advice given will be appreciated. I will post a summary of responses to the net, if interest warrants.

Please respond by email, as I don't have real access to the News.

Regards, Paul

---
Paul Moore,                       email: sp_pm@space.alcbel.be
Alcatel Bell Telephone,
Space Deptartment TS664,          phone: (+32) 3/829.5024
Berkenrodelei 33,
2660 Hoboken,
BELGIUM.


----- End Included Message -----
Newsgroups: comp.periphs.scsi
From: rrohbeck@kboeng.enet.dec.com (Ralf-Peter Rohbeck)
Subject: Re: Comparative study on tape drives
Reply-To: rrohbeck@kboeng.enet.dec.com
Organization: Digital Equipment Int. GmbH
Date: Fri, 16 Oct 1992 15:20:20 GMT


In article <1992Oct14.155721.25922@murdoch.acc.Virginia.EDU>, sdm7g@aemsun.med.Virginia.EDU (Steven D. Majewski) writes:
>Does anyone have any references on published comparisons? 
I have an interesting article from "Corporate Computing" that compares
DAT (Tecmar, WangDAT), Video 8 (8500 by Contemporary Cybernetics), QIC
(Archive 1350), 3480 (Cipher T480), 9-track (Cipher M995), VHS (Metrum),
MO disk (Alphatronix) and "Digital Linear Tape" (Cipher T860X).
The latter gets high marks, being price competitive with Video 8 and DAT and
having the best performance in most tests.
(Yes, the "Digital Linear Tape" has something to do with the "Digital" below.
 No, I've nothing to do with marketing :-)

Ralf-Peter
--
===============================================================================
Ralf-Peter Rohbeck          rrohbeck@kbomfg.dec.com         Product engineering
Digital Equipment Int. GmbH rrohbeck%kbomfg.enet.dec.com       Disk drive plant
Sudetenstrasse 5/POB 1356   ...!decwrl!kbomfg.dec.com!rrohbeck)      Kaufbeuren
W-8950 Kaufbeuren           (+49) 8341 / 91-4473                        Germany
#include "disclaimer.h"
Newsgroups: comp.periphs.scsi
From: volker@sfb256.iam.uni-bonn.de ( Volker A. Brandt )
Subject: Re: Adaptec1542B & Qemm 6.0 won't work!
Organization: Applied Math, University of Bonn, Germany
Date: Fri, 9 Oct 1992 10:00:33 GMT

In article <1992Oct05.213328.18390@Celestial.COM> bill@Celestial.COM (Bill Campbell) writes:
>I went to qemm when emm386 would fail in loadhigh if there was a
>non-dos partition on the disk (DOS 5.0).
>
>As I remember, optimize gave me a system that wouldn't work so I
>played with it manually until I got a reasonamble configuration.

Yes, I had exactly the same experience while testing quemm 6.01.
Even though I had ASPI4DOS.SYS before all the quemm-related stuff, and
optimize seemed to think that everything was ok, after restarting the system
I got lots of "invalid range" messages, and nothing was loaded high.

I just removed the /r options from my CONFIG.SYS, and the system worked, even
if not totally optimized.  I had some 620-odd KB in lower mem.

-- Volker
-- 
----------------------------------------------------------------------------
Bitnet:   UNM409@DBNRHRZ1                              Volker A. Brandt
UUCP:     ...!unido!DBNRHRZ1.bitnet!unm409             Angewandte Mathematik
Internet: volker@sfb256.iam.uni-bonn.de                (Bonn, Germany)
Newsgroups: comp.periphs.scsi
From: hansen@jupiter.rz.Uni-Osnabrueck.DE (Hans Schligtenhorst)
Subject: SCSI, FastSCSI, SCSI-2: What are the differences?
Organization: University of Osnabrueck, FRG
Date: Fri, 9 Oct 1992 15:29:47 GMT

Hello,

I'm going to buy a new SCSI-hd and I'm very confused about the new hds:
SCSI
FastSCSI (e.g. Fujitsu M2623FA)
SCSI-2

What are the differences (please understandable for a hardware-newbee) and (more
important) can I connect these disks to an AHA1542B?

Thanks in advance

Hans
--
Hans Schligtenhorst
schlighw@dosuni1.rz.uni-osnabrueck.de
Newsgroups: comp.periphs.scsi
From: jfreem@ecsvax.uncecs.edu (Joe Freeman)
Subject: SCSI floppy drives (internal)
Organization: UNC Educational Computing Service
Distribution: na
Date: Sat, 17 Oct 1992 00:35:52 GMT

I'm looking for a 2.8 meg floppy drive that comes with a
SCSI interface.  I thought Toshiba made one but can't find
the part number.  If anyone knows of a mail order source
for such a beast.  I'd appreciate an email telling me.

Thanks,
	
-- 
Joe Freeman	jfreem@uncecs.edu
		jfreeman@next.com (NeXT Mail)
The opinions espressed here are my own and are not shared by my employer  or
anyone else I know of.  Flames can be mailed to me or routed to /dev/null.
Newsgroups: comp.periphs.scsi
From: it1@ra.msstate.edu (Tim Tsai)
Subject: Re: Need Always BBS Telephone #
Organization: Mississippi State University
Distribution: usa
Date: Wed, 14 Oct 1992 18:05:11 GMT

ben@yenta.alb.nm.us (Ben Klausner) writes:
>Does anyone have the phone number for the Always Technology BBS? Am trying
>to find out if they have an ASPI driver for MS-DOS.

  1 818 597 0275

Newsgroups: comp.periphs.scsi
From: ed@maxed.amg.com (Ed Whittemore)
Subject: Re: Hooking an exabyte up between a sparc2 and a Wren V
Organization: American Micro Group, Ft. Lee  NJ
Date: Fri, 16 Oct 1992 02:32:27 GMT

In article <ldrif2INNo9v@utkcs2.cs.utk.edu> thompson@vega.cs.utk.edu (Michelle Thompson) writes:
>I'm hooking up an EXB-8500 exabyte tape drive to a
>sparc2.  I have it between the cpu and a Wren V scsi
>drive.  The machine can't see the drive behind the
>exabyte.  The targets are set correctly, and they aren't
>the same.  The exabyte drive isn't terminated internally.
>The Wren V is externally terminated.  We had it hooked up 
>to a sparc1+ in exactly the same manner, and everything 
>worked fine.  Any suggestions?
>--Michelle Thompson
>  UTK labstaff/sys admin
>

Sometimes the drives, especially tape and hd combinations are sensitive
to physical location on the bus. Try putting the drive first, or closest
to the host adapter,

-- 
Ed Whittemore   uunet!maxed!ed   ed@maxed.amg.com
American Micro Group, Inc.   201-944-3293