HDTenEightyP/NetNews huggingface dataset:
From: terry@spcvxb.spc.edu (Terry Kennedy, Operations Mgr.)
Newsgroups: comp.periphs.scsi
Subject: Re: How to use DC300 tapes in a QIC150 streamer?
Date: 28 Jan 93 11:54:05 GMT
Organization: St. Peter's College, US

In article <koenig.728156581@nova>, koenig@nova.tat.physik.uni-tuebingen.de (Harald Koenig) writes:
> I checked the holes at begin of tape (BOT) and found that hole pattern
> is the same on DC300 and DC600 but the last hole (at BOT towards EOT)
> on DC300 tapes has a smaller diameter. Is this THE? only difference
> between DC300 and DC600 (not regarding diffs in magnetic material).

  Are you sure? Did you check the distance between the sets of holes at BOT?
This is how drives determine the media type.

  Also, DC600 is not the correct media for a 150Mb drive. The correct media
is DC6150 (150Mb, not to be confused with the 15Mb DC615, which is a short
DC600) and DC6250 (250Mb). DC600A's should be readable in a 150Mb drive, as
long as they are encoded in QIC-24 mode and not QIC-11, but probably will not
be writable.

  The oxide on the tape is different (vastly different coercivity and abrasion
characteristics) and the tape length is different as well. Assuming that you
could force the drive to write the tape, I believe you will experience both a
high initial write error rate and rapid degradation of the stored data (the
timeframe for total loss should be a few weeks at most).

  While I can understand that high-density media may not be as available else-
where, I'd encourage you to use the proper media for your drive even if it's
hard to obtain / expensive / etc.

	Terry Kennedy		Operations Manager, Academic Computing
	terry@spcvxa.bitnet	St. Peter's College, Jersey City, NJ USA
	terry@spcvxa.spc.edu	+1 201 915 9381
Xref: sparky comp.periphs.scsi:6706 comp.sys.ibm.pc.hardware:37183 comp.sys.ibm.pc.misc:17107
From: manaster@yu1.yu.edu (Chaim Manaster)
Newsgroups: comp.periphs.scsi,comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc
Subject: SCSI drive dissappeared! Need help.
Date: 26 Jan 93 06:24:33 GMT
Followup-To: comp.periphs.scsi
Organization: Yeshiva University

I have just added a Buslogic 747s SCSI controller to my ESDI
system. So I now have a Maxtor ESDI drive on the ESDI controller
and a Micropolis Fast SCSI II on the SCSI coontroller.

When I first installed, I had some minor problems but what was
wierd was that the supplied device driver would not get loaded at
boot up, but I somehow still had access to the scsi drive.

Also, I was not able to disable the bios in the EISA config
software from AMI (for the AMI enterprise II motherboard) using the
Buslogic .cfg file supplied for the scsi EISA adapter.

Then after about one day where I was able to store stuff on the
scsi drive, I now can not access the drive. I can now only access
the ESDI drive.
Actually what happened (leaving out some of the trials and
tribulations) was I created a new dir on the scsi, then tried to cd
into the new dir, and the system froze. I had to cold boot. Since
then I can no longer get into the scsi drive.

What is the problem??? Anyone seen anything like this before??

Please help.

-- 
***************************************************************************
	Henry Manaster          *     EMail: manaster@yu1.yu.edu
	Brooklyn, NY            *
                                *
	Disclaimer: The above is not necessarily MY opinion nor that 
				of anyone else :-)  ????!
****************************************************************************
 
Newsgroups: comp.periphs.scsi
From: mlaurenc@world.std.com (Matt Laurence)
Subject: Help! Problems with 3.5" Optical drive...
Organization: The World Public Access UNIX, Brookline, MA
Date: Thu, 21 Jan 1993 05:48:05 GMT

I have a dgr 3.5" magneto-optical drive that takes the standard 3.5"
128 MB cartridges, and it's worked pretty well up until now. And,
as far as I can tell, the drive is still working fine, but one of
the cartridges (only one out of four) refuses to mount. It was
formatted properly, same as the other three, with FWB's HDT Lite,
and I've been using it without fail for some time. For a while,
my computer was out of commission, so I moved the drive to an SE
running system 6.05, and it worked fine. When I switched the drive
back to my IIcx, however, this one cartridge refused to mount. It
goes in and sounds like it's mounting, but then it clicks a few
times, finally spinning down as if it's about to eject the disk, 
but it then instantly spins up again to try again. If I hold the 
eject button in, it eventually spits out. But it will NOT mount,
no matter what I do. All the others work fine, even those I used when
the drive was on the SE (I didn't expect any problems with any of
them).

This cartridge hasn't been unduly abused, exposed to any temperature
extremes or anything... does anyone have an idea why this reputedly
indestructible medium might suddenly go sour on me? I have a LOT of
vital data on there, and I really don't want to revert to an expensive
data recovery service to get it off...

ANY help or suggestions would be MUCH appreciated.

Matt
mlaurenc@world.std.com

Newsgroups: comp.periphs.scsi
From: bsardis@netcom.com (Barry Sardis)
Subject: ASPI for Future Domain?
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Date: Sun, 24 Jan 1993 03:18:47 GMT

A recent Corel ad says that the SCSI drivers support a variety of interface 
adapters including Future Domain. I have the Corel SCSI drivers which were 
bundled with my Adaptec 1542b. It only seems to support the ASPI interface. 
Does anyone know if there is an ASPI driver for Future Domain boards? Is 
the Corel SCSI driver product that is available through retail capable 
of supporting a variety of interface boards, Future Domain in particular?

Thanks,

-- 
Barry Sardis		| Home:   (408) 448-1589
1241 Laurie Avenue	| Office: (408) 448-7404
San Jose, CA 95125	| Fax:    (408) 448-7404
Email: bsardis@netcom.COM or 70105.1210@compuserve.COM
From: dplatt@ntg.com (Dave Platt)
Newsgroups: comp.periphs.scsi
Subject: Re: Noise like a seek coming from new scsi hard drive.
Date: 27 Jan 93 18:35:49 GMT
Article-I.D.: ntg.1993Jan27.183549.10996
Organization: New Technologies Group, Inc.  Palo Alto CA

>Most (not quite all) the bugs are out, however one thing worries me
>somewhat. Every so often on intervals on the order of 20 to 30
>minutes apart, (not too regular) there is a momentary sound from
>the hard drive that lasts for about one second (by my reckoning)
>and sound like the drive has been given a seek command. Is this
>possible?

The controller is very probably doing a "calibration seek".  As the
drive warms up or cools down, various components such as the arm and
head expand or shrink slightly.  This changes the relationship between
the actuator's voice-coil position and the track over which the head
sits.  Periodically, the drive controller does a series of seeks across
the disk and updates its internal table of actuator-position-to-track
values.  This allows it to seek to an arbitrary (PC-specified) track
quite quickly.

Remember, these embedded-SCSI drive controllers have quite a lot
of intelligence on-board... usually at least the equivalent of a
Z80, and often much more.  I've heard that the firmware for some of the
Imprimis/Seagate Wren drives runs into the tens of thousands of lines of
C code.  Quite a lot of mechanism management, cacheing, performance
tuning, and error recovery is being performed by the controller, mostly
or entirely "invisible" to the host.  The sort of thermal-effects
calibration you have observed is merely the tip of the iceberg.

-- 
Dave Platt                                                VOICE: (415) 813-8917
              Domain: dplatt@ntg.com      UUCP: ...netcomsv!ntg!dplatt
 USNAIL: New Technologies Group Inc. 2470 Embarcardero Way, Palo Alto CA 94303
From: Gess Shankar <gess@knex.via.mind.ORG>
Newsgroups: comp.periphs.scsi
Subject: RAID Algorithms
Date: Fri, 22 Jan 93 07:44:54 EST
Reply-To: <gess@knex.via.mind.ORG> (Gess Shankar)
Organization: |<><>| Knowledge Exchange, GA, USA |<><>|

I have a couple of questions on RAID and SCSI. Is it possible to
implement RAID using a SCSI host adapter such as the 1542B and a
bunch of identical scsi drives on the bus?

Where does one find out about the various Levels and implementation
details for the same? Are there some kind of published standards?
Any code available in the public domain (Unix/MsDos/OS/2)?

GeSS
-- 
Gess Shankar      |<><>|Internet: gess@knex.via.mind.ORG                |<><>|
Knowledge Exchange|<><>|{rutgers,ogicse,gatech}!emory!uumind!knex!gess  |<><>|
Newsgroups: comp.periphs.scsi
From: art@ROCK (Art Dumas)
Subject: Adaptec 1542B or Ultrastor 14F
Organization: Computer Science House, RIT
Date: Sun, 24 Jan 1993 02:57:46 GMT


Which of these SCSI controllers would you prefer and why?

The primary use would be for DOS/Windows, Windows NT, and possibly
a public domain UNIX.

Devices would likely be HD, CD, and tape.

Thanks in advance,
Art

Newsgroups: comp.periphs.scsi
From: fg@sucker (Ferdinand Geier)
Subject: Re: SCSI computer to computer transfer?
Organization: PCS Computer Systeme GmbH
Date: Fri, 22 Jan 1993 16:44:54 MEZ
X-Newsreader: TIN [version 1.1 PL8]

Tapani Tarvainen (tt@tarzan.jyu.fi) wrote:
: In article <1993Jan20.130158.15414@klaava.Helsinki.FI> veijalai@klaava.Helsinki.FI (Tony Veijalainen) writes:

: As far as memory-to-memory moves are concerned, of course SCSI bus
: could be used as a general-purpose information channel, but whether
: it can be done with any existing software/hardware combination,
: I don't know.  With the Macs certainly not.
: --
: Tapani Tarvainen  (tt@math.jyu.fi, tarvainen@finjyu.bitnet)

this combination exists! we have done (and still doing) this with
our 'firebox', an i860-based SVR4 UNIX workstation. all you have to
do is to modify your scsi device driver and build an IP/SCSI connection,
let's say a IP-driver for scsi. it's quite fast!
--
Ferdinand Geier           | DOMAIN: fg@pcsbst.pcs.de (EUR) or
PCS Computer Systeme GmbH |         fg@pcsbst.pcs.com (ROW)
8000 Munich (Germany)     | BANG:   ...!pcsbst!fg
Newsgroups: comp.periphs.scsi
From: jlloyd@adapcal.UUCP (John Lloyd)
Subject: Re: AHA 1542A vs. 1542B
Organization: Adaptec Inc., California
Date: Wed, 27 Jan 1993 17:51:51 GMT

In article <1993Jan25.105956.11567@Informatik.TU-Muenchen.DE> gadenz@Informatik.TU-Muenchen.DE (Alexander Gadenz) writes:
>
>Can anybody out there please tell me, what's the different of a AHA 1542A and a 
>AHA 1542B.
>
The 1542A is merely an earlier revision of the board. It does NOT
support scatter/gather or residual byte count.

>Are there any problems using the 1542A?
I only work with OS/2 so I cannot speak for all environments/users. As
far as I know all our drivers should work with the A board but we no
longer run compatibilty testing on it. For example the original OS/2 2.0
driver does NOT support the A board but a subsequent revision does. You
may find compatibilty issues with other new software as well. If you do
not have a 1542 yet I recommend buying the B board even if the A board
is available at a great price.

jlloyd@adapcal.com


Newsgroups: comp.periphs.scsi
From: asyvan@solace.hsh.se (Jens Ejvinson)
Subject: Re: Adaptec 1542B or Ultrastor 14F
Organization: Solace Computer Club, Sundsvall, Sweden
Date: Mon, 25 Jan 1993 07:54:29 MET

In <1993Jan24.025746.12604@ultb.isc.rit.edu> art@ROCK (Art Dumas) writes:

>Adaptec 1542B or Ultrastro 14F ??
>Which of these SCSI controllers would you prefer and why?

Adaptec is THE standard and works with everything, good if you will
run UNIX on your machine.
The Ultrastor is a faster controller though and would be my choice since
I dont run UNIX on my PC.
Both of them have ASPI software which is indeed good if you will run
tapes and GnuTAR for DOS.

Jens Ejvinson
Asyvan@solace.hsh.se
From: smyers.s@applelink.apple.com (Scott Smyers)
Newsgroups: comp.periphs.scsi
Subject: Re: Seagate and Macintosh...
Date: 21 Jan 93 20:44:52 GMT
Organization: Apple Computer, Inc.

>Alex P. Novickis, Real Time systems demi-guru.  (W)   408-862-4541
From: x03@sun0.urz.uni-heidelberg.de (A. Stegmeier)
Newsgroups: comp.periphs.scsi
Subject: Re: Flashing LED codes on Viper drive ?
Date: 26 Jan 93 11:56:13 GMT
Organization: University of Heidelberg (Germany)

In article <1993Jan25.222025.21337@compunet.uucp> stevenw@compunet.uucp (Steven Weller) writes:

>My Archive Viper 2525 (SCSI) drive flashes the LED 2-2-5 and 
>hangs up. The manual does not even mention an LED !

I don't know about these LED codes, but you can probably debug the drive via
RS-232 connection, it's described in the manual of the 2150S.
It might also work for the 2525S.


-- 
Achim Stegmeier                    EARN: R.I.P
Unirechenzentrum Heidelberg        E-Mail: x03@sun0.urz.uni-heidelberg.de
Newsgroups: comp.periphs.scsi
From: eric@telebit.com (Eric Smith)
Subject: Re: You will be terminated!
X-Disclaimer: Everything I write is false.
Organization: Telebit Corporation
Date: Thu, 21 Jan 1993 14:45:27 GMT

>>On 21 Jan 93 11:04:35 GMT, jhwhit01@ulkyvx.louisville.edu said:
> I have been told that the Zilog 53C80 and the AMD 53C94F have "glitch eater"
> circuits built-in.  Do SCSI host adaptors that use one or the other of these
> chips require onboard termination?  

They require the same kind of termination as any other SCSI chip.  If the
host adapter is at one end of the bus, then it should be terminated.  There
should always be a terminator at each end of the bus, and none in the middle.
I wish Apple would get their act together on this.

> Is the "glitch eater" there to solve most
> termination problems or to provide termination?  

The "glitch eater" might solve some problems with poor quality SCSI cabling,
but you still will need proper termination.

> Does any SCSI chip have
> internal termination?

No SCSI controller chip that I've heard of has internal termination, and it
would probably be a bad idea for them to do so.

There do exist active SCSI terminator chips, but they are only terminators,
not controllers.  With luck the drive and host adapter manufacturers will
start using these rather than three resistor networks which get removed and
lost.
Newsgroups: comp.periphs.scsi
From: gadenz@Informatik.TU-Muenchen.DE (Alexander Gadenz)
Subject: AHA 1542A vs. 1542B
Originator: gadenz@hphalle7.informatik.tu-muenchen.de
Organization: Technische Universitaet Muenchen, Germany
Date: Mon, 25 Jan 1993 10:59:56 GMT


Can anybody out there please tell me, what's the different of a AHA 1542A and a 
AHA 1542B.

Are there any problems using the 1542A?
Are there any features of the 1542B witch are not included in the 1542A?
Can I use the ASPI4DOS with the 1542A?


Thanks

Alex

gadenz@informatik.tu-muenchen.de

Newsgroups: comp.periphs.scsi
From: wilker@hopf.math.purdue.edu (Clarence Wilkerson)
Subject: SCSI TERMINATOR RESISTORS , SIP 8 PIN style
Organization: Purdue University
Date: Tue, 26 Jan 1993 16:48:51 GMT

Many of the 3.5 inch drives uses these instead of the DIP style.
Does anyone have a par number ( Digikey would be nice). Thanks

-- 
Clarence Wilkerson      \ Bitnet:       wilker%math.purdue.edu@purccvm
Prof. of Math. (topology)\ Internet:    wilker@math.purdue.edu
Dept. of Mathematics      \ messages:   (317) 494-1903, FAX 494-0548
Purdue University,         \ office:    (317) 494-1955 (voice/modem)
W. Lafayette, Indiana 47907 \
From: Keith.W.Johnson@tek.com (Keith W. Johnson)
Newsgroups: comp.periphs.scsi
Subject: Re: ASPI for Future Domain?
Keywords: ASPI Future Domain
Date: 25 Jan 93 23:46:18 GMT
Organization: Tektronix, GPID & NWD Info Services

>Does anyone know if there is an ASPI driver for Future Domain boards? 

Try the Future Domain BBS in a couple weeks.  They are about to release
software that allows CAM and ASPI to co-exist with their cards.  Upgrades 
are supposed to be free.  I don't know the details -- I just heard the 
announcement on their automated phone system while I was on hold with 
technical support a couple days ago.


-- 
Keith W. Johnson   Tektronix, Computer Graphics Group, Wilsonville, OR, USA
Internet: Keith.W.Johnson@tek.com   Voice: 503-685-2953   Fax: 503-682-3595
Newsgroups: comp.periphs.scsi
From: ducati@ghost.dsi.unimi.it (Stefano Ducati)
Subject: Low level formatter ???
Organization: Computer Science Dep. - Milan University
Date: Thu, 21 Jan 1993 13:28:32 GMT


He 

I'm interest to find a low level format routine to change the sector size of
an ST1239 scsi Hard disk.

Thanks in advance.
Ciao 
Stefano Ducati



Newsgroups: comp.periphs.scsi
From: eric@telebit.com (Eric Smith)
Subject: Active termination (was Re: You will be terminated!)
X-Disclaimer: Everything I write is false.
Organization: Telebit Corporation
	<ERIC.93Jan21064527@iceland.telebit.com> <yJJks*BB1@caleb.UUCP>
	<1993Jan22.184433.16542@sfu.ca>
Date: Fri, 22 Jan 1993 21:12:41 GMT

>>On Fri, 22 Jan 1993 03:49:22 GMT, jdp@caleb.UUCP (Jim Pritchett) said:
> Can active terminators be used with SCSI-I devices?  Are they
> available in plug in form (50 IDC or Centronix connectors) now?
> Where?

I've seen plug-in active terminators in both IDC and CHAMP (so-called
Centronics) connector form.  I don't know where to get them.

>>On Fri, 22 Jan 1993 18:44:33 GMT, mtichy@fraser.sfu.ca (Martin Tichy) said:
> Sorry, I just started following this thread.  What is active
> termination?

An active terminator actually has one or more voltage regulators to produce
the termination voltage, rather than using resistor voltage dividers.

This is a passive terminator:


TERMPWR     ------/\/\/\/------+------/\/\/\/-----  GND
                               |
                               |
                              SCSI signal

Notice that the termination voltage is varies with the voltage on the
TERMPWR line.  One voltage divider (two resistors) is used for each SCSI
signal.


An active terminator looks more like this (supply filter caps omitted):

               +-----------+
TERMPWR   -----| in    out |------+------/\/\/\/-------SCSI signal
               |   gnd     |      |
               +-----------+      |
                    |             +------/\/\/\/-------SCSI signal
                    |             |
GND  ---------------+             |
                                  +------/\/\/\/-------SCSI signal
                                  |
                                 etc.

Assuming that the TERMPWR voltage doesn't drop below the desired termination
voltage (plus the regulator's minimum drop), the SCSI signals will always
be terminated to the correct voltage level.

Several vendors have started making SCSI active terminator chips, which
contain the regulator and the resistors;  Motorola is among them.

In other SCSI chip news, several vendors including TI now make chips with nine
RS-422 transceivers for use with differential SCSI.  These replace nine 75176
type parts.
From: reginald.hirsch@yob.sccsi.com (Reginald Hirsch) 
Newsgroups: comp.periphs.scsi
Subject: ADAPTEC/WANGDAT/DV
Date: 27 Jan 93 10:38:00 GMT
Distribution: world
Organization: Ye Olde Bailey BBS - Houston, TX - 713-520-1569
Reply-To: reginald.hirsch@yob.sccsi.com (Reginald Hirsch) 

 I was wondering has anyone had any suggest running Desqview and
A Wangdat tape backup under an Adaptec 1542B controller.I am
running Syplus and any recommendations and settings for the
setup.Thanks.
                                                        
----
+------------------------------------------------------------------------+
| Ye Olde Bailey BBS   713-520-1569 (V.32bis) 713-520-9566 (V.32bis)     |
|   Houston,Texas          yob.sccsi.com       Home of alt.cosuard       |
+------------------------------------------------------------------------+
From: kent@fel.creol.ucf.edu (Kent Hopkins)
Newsgroups: comp.periphs.scsi
Subject: SCSI Problems
Date: 23 Jan 93 20:17:26 GMT
Followup-To: comp.periphs.scsi
Organization: CREOL/UCF

Hello group:

I have a problem with a Mac IIcx.  The SCSI drive died (CMS 100mb) and
the replacement drive (Quantum 127mb) did not work.  The replacement
drive is on its way back to the vendor but while I am waiting, I would
like to test the bus.  Does anyone have a source for pinouts/levels/etc
for the standard SCSI bus?

Also, has anyone had a SCSI drive die due to a bad controller?  I am
wondering if the drive died because of the power supply or the SCSI
controller in the Mac...

Please post replies to me directly...I will summarise and forward to 
the list.  Thanks for the help.

Kent Hopkins, Lab Manager-Research Free Electron Laser Group              |
Center for Research in Electro-Optics and Lasers (CREOL)                  |
University of Central Florida                                             |
Orlando, FL 32826                                                         |
                              kent@fel.creol.ucf.edu  KENT@UCF1VM.BITNET  |
--------------------------------------------------------------------------+
Newsgroups: comp.periphs.scsi
From: surprenc@spp3.jsp.umontreal.ca (Surprenant Colin)
Subject: Where can I get PRIAM parts?
Organization: Universite de Montreal
X-Newsreader: TIN [version 1.1 PL8]
Date: Thu, 28 Jan 1993 02:51:16 GMT

Hi,
Anyone know where I could get some PRIAM servicing or parts?
I heard that a company called something like "Atasi" bought what was
left of PRIAM... Anybody have details on that?

Thanks,
-------------------------------------------------------------------------------
Colin Surprenant          |  ROT inc.
galaad@rot.qc.ca          |  Recherche Operationelle en Telecommunication
Phone: 514-849-0948       |  Montreal, Quebec
FAX:   514-849-6775       |  IP: 192.77.49.131
-------------------------------------------------------------------------------
surprenc@jsp.umontreal.ca |  Universite de Montreal 
-------------------------------------------------------------------------------
From: zmz@kanga.caltech.edu (Steven Zhou)
Newsgroups: comp.periphs.scsi
Subject: Programming doc for Future Domain 1660 needed
Date: 27 Jan 93 20:55:37 GMT
Organization: California Institute of Technology, Pasadena
NNTP-Posting-Host: kanga.caltech.edu

Hi, 

I'm looking for technical information on programming the Future Domain  
scsi controller. Is there a ftp site for such documents? Does anyone have  
some kind of manual for this card. Any infomation is appreciated.

Steve
From: kordash@linus.mitre.org (John L. Kordash)
Newsgroups: comp.periphs.scsi
Subject: SCSI controllers - Which to pick?
Date: 23 Jan 93 00:41:52 GMT
Reply-To: kordash@mitre.org
Followup-To: poster
Distribution: usa
Organization: Research Computer Facility, The MITRE Corporation, Bedford MA


I am interested in picking up a SCSI controller for my ISA 486 PC.  I am mainly
interested in getting a controller that will leave as many options open as
possible with respect to the operating system I happen to be running.  

If I could have it all, I would like the controller to run under DOS5, OS/2,
Linux, BSD386, SCO, etc.  Unfortunately I don't know of the technical
differences between some of the major contollers (say Adaptec 152x vs 154x).  I
guess you could say that I am basically looking for a controller that is the
'most' compatable.

Can someone point me in the right direction, or provide comments and/or
experiences - good or bad. 

Thanks,

-John
From: chin@hpcc01.corp.hp.com (Frederick Chin)
Date: Wed, 27 Jan 1993 00:39:23 GMT
Subject: Using datio with HP DAT Drive?
Organization: the HP Corporate notes server
Newsgroups: comp.periphs.scsi


Just wanted to find out if anyone is using a program
called datio.  I am using datio with a HP6400 series
2000 DAT drive and after it gets to backing up around
500 megabytes the error I get is: 

datio: Write of file to tape failed

The command I am running is:

find /. -fsonly hfs -hidden -print | 
/usr/contrib/bin/datio -oxh /dev/rmt/0mn

It is connected to a HP9000 375 computer to a SCSI
Interface.


Thanks in advance,

Fred Chin
chin@hpcc01.corp.hp.com

Newsgroups: comp.periphs.scsi