HDTenEightyP/NetNews huggingface dataset:
From: zeglins@ccu.umanitoba.ca (Gordon W. Zeglinski)
Newsgroups: comp.periphs.scsi
Subject: recomendations for scsi tape backup
Summary: recomendation for scsi tape backup unit
Keywords: tape backup
Date: 9 Sep 92 01:59:00 GMT
Organization: University of Manitoba, Winnipeg, Canada

Thanks to all those who responded to my HOT drives post.

I've been thinking of getting a scsi tape backup unit for my PC.
The unit should be able to work with the 1542b and 1740 scsi host adapters
by adaptec and OS/2.

I've found a swift unit which is attactively priced.  Does anyone have
any opinions about this unit ?  Any recomendations for other brands?
The unit should be in the 250 to 400 Mg range, the swift is 250 Mg.

Thanks

Gord.

Suggestion:
I have had un predictable results with my TECHMAR QT525ES on an
16 MHZ 386SX clone with an ADAPTEC 1542B.  If I had it to do over
again, I would go with anything BUT this.  The software seems buggy.
The Tech support is lacking.
I have reverted to floppy based backup and also FTP to my UNIX server.
---
knorman@mcdmail1.fwrdc.rtsg.mot.com
From: rleberle@vax1.umkc.edu
Newsgroups: comp.periphs.scsi
Subject: Magnavox CD-ROM and Aha 1542
Date: 14 Sep 92 20:53:08 GMT
Organization: University of Missouri - Kansas City


Does the Magnavox CD-ROM drive (the external one) work with the
Adaptec 1542 SCSI-Adapter. Does it work under DOS and SCO-UNIX?
Newsgroups: comp.periphs.scsi
From: hand@spc9.jpl.nasa.gov (Kolin Hand)
Subject: Rodime 3088T Characteristics?
Organization: Jet Propulsion Laboratory, Pasadena, CA
Date: Tue, 15 Sep 1992 22:28:27 GMT

Greetings *,

Does anyone have the physical characteristcs of the Rodime 3088T (80M SCSI)
drive that you could send me?  I purchased such a drive but received no
documentation.

I would greatly appreciate it.

Kolin

+===========================================================================+
+  "Guilt Trip:  The nuclear weapon of relationships."  -- K. Hand          +
+---------------------------------------------------------------------------+
+  Kolin E. Hand                              hand@spc7.jpl.nasa.gov        +
Newsgroups: comp.periphs.scsi
From: rommel@Informatik.TU-Muenchen.DE (Kai-Uwe Rommel)
Subject: Re: Seemingly poor performance
Organization: Technische Universitaet Muenchen, Germany
Date: Sun, 13 Sep 1992 13:04:54 GMT

In article <1992Sep13.012159.1@ntuvax.ntu.ac.sg> astsloke@ntuvax.ntu.ac.sg writes:
>In article <1992Sep11.115350.6945@Informatik.TU-Muenchen.DE>, rommel@Informatik.TU-Muenchen.DE (Kai-Uwe Rommel) writes:
>> I don't think so. I have a DEC DSP-3085 disk and it does about 2.5MB per
>> second according to CoreTest 2.9 (any caching disabled, of course).
>> And 2.5MB/sec is what the tech. doc. of this disk says that it can do.
>> 
>> I doubt that the limit of the ISA bus transfer rate is that low, it is
>> certainly much higher, it's probably always the speed of the disk that
>> delimits the data transfer rate.
>
>How are you achieving > 2 MBps?  I have a ST41600N with a 5,400 rpm platters
>and an internal transfer rate of 24Mbps to 35 Mbps (rated).  Given all this I
>should get at lease 2MBps with coretest?
>
>But no, I only get 1.490+ MBps.

Well, I am not that much of an hardware freak, I just ran CoreTest
without any software caching in the OS. It reported about 2.5MB transfer
rate. 

>I believe that some of the throughput deterioration in caused by the geometry
>translation carried out by the Adaptec AH1542 Controller I am using. 
>Mine is a 486/33 ISA system.
>
>What controller are you using? Does it do geometry translation?
>I actually have never seen anyone achieve > 2 MBps on a SCSI on a PC.

I have a 486/33 ISA system too. Controller is a 1542B. Yes, it does
translation. 

The disk manual says: the physical geometry is: 2086 tracks, 14 heads,
57 sectors per track, 5363 rpm. Transfer rate to/from media: 2.6MB/sec. 

The OS uses the disk as 812 cylinders, 32 heads, 64 sectors per track.

However, I don't think the translation can make the disk that much
faster. Actually, this translation could make a benchmark program think
the disk would be slower, because it would think some data to be still
on the same cylinder (and thus accessible without track-to-track access
time delay) where it actually already requires a seek to the next
cylinder. This is because more than one physical cylinder (2086) is
mapped on one logical cylinder (812).

Kai Uwe Rommel

/* Kai Uwe Rommel --- rommel@informatik.tu-muenchen.de */

DOS ... is still a real mode only non-reentrant interrupt
handler, and always will be.                -Russell Williams

Newsgroups: comp.periphs.scsi
From: neese@adaptx1.UUCP (Roy Neese)
Subject: Re: ASPI specs
Organization: Adaptec Inc., Texas
Date: Thu, 10 Sep 1992 21:23:46 GMT

In article <1992Sep9.085425.11091@newshost.anu.edu.au> Joe.Miles@anu.edu.au writes:
> Maybe I have missed looking somewhere, but could someone tell me if there is a
> document describing the ASPI driver software interface available on the net, or
> alternatively what is the title and source of this documentation ?

You can get the ASPI specifications from Adaptec by calling 408-945-8600
and asking for Technical Publications and ask for the ASPI spec you
require.  Either for DOS or Novell.
---

			Roy Neese
			Adaptec Senior UNIX/SCSI Software Engineer
			UUCP:	convex!egsner!adaptex!neese
			Inet:	neese%adaptex@cirr.com
From: pjh@mccc.edu (Pete Holsberg)
Newsgroups: comp.periphs.scsi
Subject: Re: Low Voltage on Pin 38
Date: 14 Sep 92 21:58:50 GMT
Organization: The College On The Other Side Of Route One

In article <1992Sep13.000854.11526@mccc.edu> pjh@mccc.edu (P. J. Holsberg) writes:
=I'm trying to connect up a device that's powered from a SCSI device --
=WangDAT 1300 to be precise -- and it gets its power from pin 38,
=termpwr. Unfortunately, the device needs 5V and the 1300 is putting out
=only about 2V.
=
=Is there anything I can do about this? Is pin 38 just a voltage source
=or is it under control of something? I ask this because if it were just
=a voltage source, I'd have no qualms about disconnecting it from the
=cable to the connector and run 5V from the power supply of the WangDAT's
=case. However, as I'm sure you can tell, I know zilch about SCSI. :-)

Solved! The WangDAT has a jumper that must be connected to get the 5V
to TermPwr.

Now, if I could get the Trantor driver to do its thing...
From: sjb5@ns1.cc.lehigh.edu (STACY JOHN BEHRENS)
Newsgroups: comp.periphs.scsi
Subject: Future Domain quirks
Date: 5 Sep 92 04:27:21 GMT
Organization: Lehigh University

I have gotten a Future Domain 1680 DNK and it works fine except for a few odd
quirks.  First, I run OS/2.  I rebooted in DOS and ran a benchmark on it.  The
result was about 50ms average access time.  Obviously unacceptable, but for
two things.  It doesn't *seem* to be running that slow, though it does seem
slower than it should, and the machine thinks (correctly) that it is a non DOS
disk.  (FAT and HPFS partitions)  Also, when I am running OS/2, when the hard
drive gets accessed, the mouse freezes in place.  Is that due to a hardware
setting, or just poor drivers?  Also it *seemed* to get slower after I
transported my machine 400 miles.  This is just a perception however and I may
not have really noticed due to my excitement of getting a card that actually
works.  Any help would be appreciated.

                                                        Stacy John Behrens
                                                        *===)-------------

                                                        
Newsgroups: comp.periphs.scsi,comp.sys.intel
From: mccall@mksol.dseg.ti.com (fred j mccall 575-3539)
Subject: Re: EISA vs. ISA - which is better?
Organization: Texas Instruments Inc
Date: Thu, 10 Sep 1992 17:53:39 GMT

In <BuDB4r.Lx5@unx.sas.com> sasbge@ant.unx.sas.com (Gantt Edmiston) writes:


>I'm buying my first PC and I'm completely ignorant and/or baffled
>as to which path to take as it relates to EISA or ISA bus systems.

>One thing to consider is that I currently own two Maxtor 280MB SCSI
>hard disk drives.  An EISA system would allow me to utilize them.
>An ISA system would require me to purchase an additional SCSI controller.
>EISA system appear to be about $1000 more than the equivalent ISA
>machine.  More like $700 more if I consider the fact that the SCSI
>controller already comes with the EISA option.

>In case it's not obvious, let's assume that I don't know one system
>from the other =-).  What considerations and facts do I need to know in
>order to make an informed choice between EISA or ISA?  I don't consider
>the $$$$ to be the number one factor in the decision.  It does matter,
>it's just not the most important thing.  I want to buy a system that will
>hold it's value (to me and possibly to others in the future).

If you're not going to be running something that does preemptive
multitasking like UNIX or OS/2 (or, presumably, Windows/NT), I don't
think you really need an EISA bus.  It's really tough for something
like a single controller to saturate the ISA bus -- it just wouldn't
have enough throughput.

ISA is the old PC-AT standard bus.  It is 16-bits wide and has limits
on how many bus-masters are allowed.  Typically, good SCSI controllers
for the ISA will do bus mastering (I think -- e.g., AHA-154x series).

EISA is a 32-bit wide bus-mastering bus.  It will, however, take the
older standard ISA cards, and these are what are often used in EISA
machines (which means you really get no benefit from them to speak
of). 

[Personally, I bought the EISA because of future plans.  I think you
can expect the cost delta between these two to continue to drop in the
future, too.]



-- 
"Insisting on perfect safety is for people who don't have the balls to live
 in the real world."   -- Mary Shafer, NASA Ames Dryden
------------------------------------------------------------------------------
Fred.McCall@dseg.ti.com - I don't speak for others and they don't speak for me.
Newsgroups: comp.periphs.scsi
From: kbm8572@summa.tamu.edu (BRYAN MILLIGAN)
Subject: Why the /V option on the ASPI driver?
News-Software: VAX/VMS VNEWS 1.41    
Organization: Texas A&M University, Academic Computing Services
Date: Tue, 8 Sep 1992 18:15:00 GMT

	I have an AHA-1542A controller and am using the ASPI driver under
DOS (version 3.0A).  According to the documentation, I need to specify
the /V option because my card swaps large amounts of data to video memory (?).
Why?  Can anyone explain this to me? 

bryan

kbm8572@zeus.tamu.edu (VAX 9000)
bryan@aero15.tamu.edu (Sun 4/65)
(409)845-0714         (Panasonic Easa-Phone)


Newsgroups: comp.periphs.scsi
From: Andrew.Jackson@bbs.oit.unc.edu (Andrew Jackson)
Subject: Adaptec 1522 and Always IN-2000 sector size creation...
Organization: Extended Bulletin Board Service
Date: Thu, 10 Sep 1992 06:29:19 GMT


--
   The opinions expressed are not necessarily those of the University of
     North Carolina at Chapel Hill, the Campus Office for Information
        Technology, or the Experimental Bulletin Board Service.
           internet:  bbs.oit.unc.edu or 152.2.22.80
Newsgroups: comp.periphs.scsi
From: hutton@ssd.kodak.com (Mike Hutton)
Subject: Re: Which is better: Adaptec 1542B (or C), UltraStore, or ?
Organization: Eastman Kodak
Date: Fri, 11 Sep 1992 14:11:58 GMT

Does anyone have any info on a 1542(C)? Is the C out? Is it coming out?
What is it going to have?


Thanks in advance.
From: astsloke@ntuvax.ntu.ac.sg
Newsgroups: comp.periphs.scsi
Subject: Re: Seemingly poor performance
Date: 12 Sep 92 17:21:59 GMT
Organization: Nanyang Technological University - Singapore

In article <1992Sep11.115350.6945@Informatik.TU-Muenchen.DE>, rommel@Informatik.TU-Muenchen.DE (Kai-Uwe Rommel) writes:
> In article <1992Sep11.064636.3349@ica.philips.nl> adrie@ica.philips.nl (Adrie Koolen) writes:
>>To reverse things a bit: 1773 KB/s is EXTREMELY fast! At this speed, the
>>ISA bus is probably completely flooded. In any case, you can't transfer
>>5 MB/s, let alone 10 MB/s, over the ISA bus. Furthermore, you should
>>check how fast the sustained transfer rate of the Micropolis SCSI-2 disk
>>is. It's a little hard to derive; you should know the number of sectors
>>per track, number of tracks per cylinder, interleave and skewing factors,
>>rotation speed, etc. I've seen a lot of drives that max out at some
>>2 MB/s.
>>
>>The conclusion definitely is that the ISA bus is the bottleneck here.
> 
> I don't think so. I have a DEC DSP-3085 disk and it does about 2.5MB per
> second according to CoreTest 2.9 (any caching disabled, of course).
> And 2.5MB/sec is what the tech. doc. of this disk says that it can do.
> 
> I doubt that the limit of the ISA bus transfer rate is that low, it is
> certainly much higher, it's probably always the speed of the disk that
> delimits the data transfer rate.
> 
> Kai Uwe Rommel
> 
> /* Kai Uwe Rommel --- rommel@informatik.tu-muenchen.de */
> 
> DOS ... is still a real mode only non-reentrant interrupt
> handler, and always will be.                -Russell Williams

How are you achieving > 2 MBps?  I have a ST41600N with a 5,400 rpm platters
and an internal transfer rate of 24Mbps to 35 Mbps (rated).  Given all this I
should get at lease 2MBps with coretest?

But no, I only get 1.490+ MBps.

I believe that some of the throughput deterioration in caused by the geometry
translation carried out by the Adaptec AH1542 Controller I am using. 
Mine is a 486/33 ISA system.

What controller are you using? Does it do geometry translation?
I actually have never seen anyone achieve > 2 MBps on a SCSI on a PC.

Regards.

T.S. Loke
Nanyang Technological University
Singapore
* Standard Disclaimers Apply
From: kev@hpcpbla.bri.hp.com (Kevin Jones)
Date: Mon, 7 Sep 1992 06:26:18 GMT
Subject: Re: Ordinary DAT vs. "data grade" DAT
Organization: HP Computer Peripherals Bristol, UK
Newsgroups: comp.periphs.scsi

> Can I use for-music DAT for storing data _safely_?

No.
The reason is that there's a lot of very low grade tape out there.
Unless the cassette has the "DDS" logo accompanied by "Digital Data
Storage" written on it, then don't expect "safe" data.

In addition, there are a lot of low grade cassette casings which
(if you're unlucky) can jam in your drive.

> The HP Tape still going strong after 600+ r/w passes.

HP specs 2000 trouble free passes for its tapes.
The mileage on a write-rewind-read test should therefore be around
"1000+ r/w passes" assuming your system can stream the drive (thus
ensuring extra passes due to repositioning do not occur).


-----------------------------------------------------------------
Kevin Jones.                       | Hewlett Packard Ltd,
                                   | Computer Peripherals Bristol,
kev%hpcpbla@hplb.hpl.hp.com        | Filton Road,
                                   | Stoke Gifford,
Tel: 011 44 272 228351             | Bristol.   BS12 6QZ.
                                   | ENGLAND.
-----------------------------------------------------------------

This response does not represent the official position of, or
statement by, the Hewlett-Packard Company.  The above data is
provided for informational purposes only. It is supplied
without warranty of any kind.

Newsgroups: comp.periphs.scsi
From: jalsop@seachg.uucp (John Alsop)
Subject: Anyone using SVR4 "sdi" interface?
Reply-To: jalsop@seachg.UUCP (John Alsop)
Organization: Sea Change Corporation, Mississauga, Ontario, Canada
Date: Tue, 15 Sep 92 20:27:39 GMT

I have a couple of obscure questions about the SVR4 SCSI Driver Interface
(SDI).

If you have used this interface and are willing to share your knowledge, please
drop me a line.

Thanks,

-- 
John Alsop

Sea Change Corporation
6695 Millcreek Drive, Unit 8
Mississauga, Ontario, Canada L5N 5R8
Tel: 416-542-9484 Fax: 416-542-9479
UUCP: ...!uunet!uunet.ca!seachg!jalsop  jalsop@seachg.com
From: ortmann@plains.NoDak.edu (Daniel Ortmann)
Newsgroups: comp.periphs.scsi
Subject: Re: Seemingly poor performance
Date: 15 Sep 92 20:21:51 GMT
Organization: North Dakota Higher Education Computing Network

rgpxs360@glen-ellyn.iit.edu (Peter Stein) writes:

)Has anyone seen data on typical scsi performance ? I'm referring to the
)transfer rate, average seek time, and track-to-track seek. I recently
)upgraded my 386-33 system (ISA) to a Micropolis SCSI-2 and Promise 
)caching controller with 1 Meg installed. The performance while better
)than my Ultrastor 12F and ESDI drive combination hardly lives up to the
)billing SCSI has received. While I realize that the advertised rates of

Perhaps your drives or controllers are losing data and doing several
reads of the same blocks?

Maybe it would be a good idea to run a utility to analyse the disk
media?  (Is it possible to get information on how many re-reads are
being executed?)
-- 
Daniel   The un?X Disciple
From: nkumamot@ss.titech.ac.jp (Norichika Kumamoto)
Newsgroups: comp.periphs.scsi
Subject: Wanted: info about ST157N
Date: 9 Sep 92 12:14:45 GMT
Distribution: comp
Organization: Tokyo Institute of Technology

Hello!!

I have a junk SCSI hard drive Seagate ST157N. But, I have no
information about it. I'd like to add it to my computer. Please tell
me the information : the number of heads, cylinders, sectors, etc. I
apreciate any information.

Thanks in advance,
--
Norichika Kumamoto
Department of Electrical and Electronic Eng., Faculty of Engineering,
Tokyo Institute of Technology
e-mail:nkumamot@ss.titech.ac.jp
Newsgroups: comp.periphs.scsi
From: bcochavy@ilux39.intel.com (Baruch Cochavy)
Subject: Test -- sorry, please ignore.
Date: Fri, 11 Sep 1992 11:20:29 GMT
Organization: Intel



Sorry ...

-- 
+--------------------------------------------------------------------+
| Baruch Cochavy             phone: +972-4-355807                    |
|   iSWP, INTeL, ISRAEL      bcochavy@iil.intel.com                  |
|                                                                    |
| "Reality is what refuses to go away when I stop believing in it"   |
|    - P.K. Dick                                                     |
| "Quality is what refuses to stop working when you stop maintaining |
|  it " -- mine.                                                     |
+--------------------------------------------------------------------+
From: landis@sugs.tware.com (Hale Landis)
Newsgroups: comp.periphs.scsi
Subject: ST1096N 
Distribution: world
Date: Sun, 13 Sep 92 01:05:38 GMT
Organization: SUGS

The Seagate Tech Support BBS number is (in the USA) 408-438-8771.
The BBS has the info (jumpers, pinouts, etc) for all Seagate drives.
There is also a voice number and a FAX number but I don't have them
with me now.  I'll post them in a day or two.  And, maybe, if we
are lucky, we will get Seagate Tech Support hooked up to net mail soon!
--------------------------------------------
Hale Landis                  Ph 408-423-4017
tware!sugs!landis -or- landis@sugs.tware.com
--------------------------------------------
Newsgroups: comp.periphs.scsi,comp.sys.ibm.pc.soundcard
From: clarkc@IMD.Sterling.COM (Clark Cheney)
Subject: PAS 16 SCSI Connector
Organization: Sterling Software
Date: Tue, 15 Sep 1992 18:55:58 GMT
X-Md4-Signature: d482ac0ee1659a26ef633671df7898a6

I'm looking for information about the compatibility, functionality and possible 
problems of the Audio Pro 16 boards SCSI connector.

Please email any responsese.

Thanks in advance

Clark
-- 
Clark Cheney	             UUCP:     uunet!sparky!clarkc
Sterling Software IMD        INTERNET: clarkc@sparky.IMD.Sterling.COM
1404 Ft. Crook Rd. South     Phone:    (402) 291-8300 
Bellevue, NE. 68005-2969     FAX:      (402) 291-4362
From: muszynsk@bcstec.ca.boeing.com (Richard Muszynski)
Newsgroups: comp.periphs.scsi
Subject: Sony CDU-541 & Ultrastor
Summary: Request for Sony CDU-541 "SONY_SCI.SYS" driver
Keywords: SONY DRIVERS SCSI CDROM
Date: 4 Sep 92 21:28:40 GMT
Organization: Boeing Computer Services, Seattle

I just received a sony CDU-541 SCSI CD Rom drive without the Sony interface.
I have very high hopes to install it on my Ultrastor 14F SCSI Host Controller
where my hard drive lives.  I have the CD Rom drive hooked up and it does
report at boot up.  What I really "think?" I need is the Sony driver to make
this whole thing work.  The documentation with the drive refers to the
driver "SONY_SCI.SYS", which of course did not come with my drive.  Can some
kind net-worlder please send me a copy, post it here, or make it available 
vi anonymous FTP.  I would be very grateful.  Any advise to guide me from  
making stupid errors would be very appreciated.  I will post my results for
others to learn from.  PLEASE! I really need the sys driver.

Thanks in advance,
Rick Muszynski  muszynsk@bcstec.ca.boeing.com
From: yaosenko@acsu.buffalo.edu (Yaosen Ko)
Newsgroups: comp.periphs.scsi
Subject: Ordinary DAT vs. "data grade" DAT
Date: 5 Sep 92 02:31:13 GMT
Organization: UB

Greetings,

Is there any difference between ordinary, for-music DAT
(Digital Audio tape) and those expensive "data grade" DAT for
storing backup data?

Can I use for-music DAT for storing data _safely_?

Any comments and information welcome.
Newsgroups: comp.periphs.scsi
From: eletanjm@nuscc.nus.sg (TAN JIN MENG)
Subject: Disk Array
Organization: National University of Singapore
Date: Sat, 5 Sep 1992 03:43:27 GMT

I've just seen an advert that advertises a diskarray (RAID ???) by CORE
International that supposidly sells a 500MB array for "... less than
$6500" !!!.  It runs on SCSI-2 and is supposidly transparent to the OS 
(looks like any other harddisk).

Anyone know any details about this?

ie RAID level, fault tolerence features, performance etc....

Thanks 

jin meng
Newsgroups: comp.periphs.scsi
From: peterson@crash.cts.com (John Peterson)
Subject: Where can I find documentation of Sense Keys returned by devices?
Organization: CTS Network Services (crash, ctsnet), El Cajon, CA
Date: 05 Sep 92 12:29:39 PDT
Summary: Where can I find documentation of Sense Keys returned by devices?
Keywords: SCSI Sense Keys, Documentation

   Where does one go to look up the meaning of Sense Keys, etc. returned
from a SCSI device? While my machine was performing some heavy I/O, (reading
and writing to the same drive), I got the following;

WARNING; SD01; I/O Error, HA 0 TC 0, Unit = 0, Err: 6DD0E001
block = 0x000000, count = 2048
Sense Key; 0x000004, Extended Sense; 0x000044, Opcode; 0x000028

which wasn't too informative. I'm curious to know the specifics of this
one, but what I really want to know is; WHERE IS THIS DOCUMENTED? Is this
device dependent, or the same for all "disk drive" category scsi devices?
I really do want to R.T.F.M. :^) I would guess this to be of general
interest, so posted replies may be best.

   The vitals of my setup; EISA 486/33 w/16Mb, Adaptec 1542B (jumpered for
5 Mb/sec xfer), Fujitsu 2624F (async transfers over scsi bus), running under
Dell's V.4 rel 2.2. I did several scsi VERIFY's through the adaptec ROM at
dc00:6, and nothing turns up, so my best guess is that the media is fine,
but I may need to adjust the Adaptec xfer rates over the AT bus (it passes
Bus Master tests at 5.7 but not 6.7) or SCSI bus xfer settings.

Thanks in Advance, John

Newsgroups: comp.periphs.scsi,comp.unix.bsd