HDTenEightyP/NetNews huggingface dataset:
From: db74+@andrew.cmu.edu (Derrick J. Brashear)
Newsgroups: comp.periphs.scsi,comp.sys.sun.wanted
Subject: Re: Emulex MD24 SCSI info?
Date: 11 Jan 93 03:49:21 GMT
Article-I.D.: andrew.wfILfVC00WAEM3O1Rj
Organization: Carnegie Mellon, Pittsburgh, PA

From experience:
The Sun doesn't particularly care for those IBM RT ESDI disks. IBM
implemented a proprietary ESDI which makes it different and virtually
unusable.

-D
Newsgroups: comp.periphs.scsi
From: paulh@storcon.uucp (Paul Hanmann)
Subject: Performance Questions
Date: Thu, 7 Jan 1993 18:31:13 GMT
Organization: Storage Concepts, Inc.
Keywords: SCSI-2 wide Performance


 I have a question which I hope someone out there can answer on realworld
 SCSI-2 WIDE performance.
 
 Has anyone been able to test the maximum sustained transfer on a SCSI-2
 WIDE configuration. There seems to be some customer confusion on just how
 fast it can run.
 
 I would be interested in any data anyone may have on this. I also would like
 real data and not simulations or marketing hype. I am not asking anyone to give
 away any trade secrets, but it would sure help to have some idea on how fast it
 can really operate.
 
 Please try to answer these questions with your answer such as:
 
 1. System configuration - Type of system, CPU, host adaptor, bus, OS.
 
 2. Chips used - both on the host side and target side.
 
 3. Type of target used - RAMDisk, Array ( RAID level), Drive type.

 I know someone has been able to do these kinds of tests and would be glad to
 distibute them if there is any interest, but if anyone wishes to have their 
 answers kept confidential please E-Mail direct to me and state that this should
 not be distributed and I will keep them confidential.

 Thanks,

          _____________________________________________________________
          -                                       _______   _~;       -
          -    Paul Hanmann                      |       =_= /        -
          -    Storage Concepts                  \   USA    /         -
          -    1622  Deere Ave.             --->  *-_  ___ /          -
          -    Irvine, Ca. 92714                     \/   \\          -
          -    Voice:     (714)852-8511                               -
	  -    FAX:	  (714)557-5064				      -
          -    UUCP:      !uunet!storcon!paulh                        -
          -    Internet:  paulh@storcon.com                           -
          _____________________________________________________________

Xref: sparky comp.periphs.scsi:6394 soc.culture.japan:13343 ne.general:3874 misc.invest:15985
From: herring@netcom.com (John Herring)
Subject: HELP!  SCSI programming
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Distribution: usa
Date: Tue, 12 Jan 1993 17:57:02 GMT

Does anyone know of some sample source code that will show me how to talk
SCSI to my SCSI device?  I know I have to use IOCTL.
I am doing this in SYS5 R3.


Thanks in advance.

john

herring@netcom.netcom.com
From: jesup@cbmvax.commodore.com (Randell Jesup)
Newsgroups: comp.periphs.scsi
Subject: Re: CAM
Date: 5 Jan 93 20:34:44 GMT
Reply-To: jesup@cbmvax.commodore.com (Randell Jesup)
Organization: Commodore, West Chester, PA

milton@teal.csn.org (Milton Scritsmier) writes:
>>	A multi-initiator system may well not recover from that.  Since the
>>other initiators are of course disconnected, they will not normally notice
>>the unit attention condition, they'll merely wait for the target to reselect
>>them (which it won't).  I'm not sure you can count on all initiators being
>>able to notice a hard-reset, and I'm pretty certain you can't count on
>>most initiators to handle error recovery from it.
>
>Wouldn't you at least expect the initiators involved to time-out a
>target if it fails to complete the command (because of the reset)?
>A time-out should generate an action such as an Abort message to the
>target followed by a retry (in which case the initiator would see the
>Unit Attention condition), or even a hard reset (but to avoid an infinite
>loop among all the initiators, they would have to be able to deal with
>seeing a reset themselves).

	Many systems don't use timeouts currently.  Also, Abort/retry is
not workable for most tape drives, probably some printers, etc.

-- 
GNU Emacs is a LISP operating system disguised as a word processor.
 - Doug Mohney, in comp.arch

Randell Jesup, Jack-of-quite-a-few-trades, Commodore Engineering.
jesup@cbmvax.commodore.com  BIX: rjesup  
Disclaimer: Nothing I say is anything other than my personal opinion.
Newsgroups: comp.periphs.scsi,comp.misc
From: peter@ferranti.com (peter da silva)
Subject: Emulex SCSI-bus ESDI controller information.
Organization: Xenix Support, FICC
Date: Thu, 7 Jan 1993 20:17:38 GMT

I have an Emulex assembly # MU2410401 SCSI-ESDI bridge card. It is an ESDI
controller capable of driving at least four ESDI disk drives, and sits on
a SCSI bus, allowing you to drive ESDI drives from a SCSI computer. It was
hooked up to four "type 38" drives: Maxtor XT4380E and Miniscribe 9380E,
and maybe some Micropolis 1558 and Priam 600-series drives.  I would like
to know how to jumper and address this card. I called the Emulex 800 number,
but it has been sold to some hospital recruiting department.

The card was originally in a 19-inch rack mount expansion unit sold with
a PC/RT by Landmark Graphics.

Does anyone have docs on this part, or can provide a contact number for
Emulex?
-- 
Peter da Silva                                            `-_-'
Ferranti International Controls Corporation                'U` 
Sugar Land, TX  77487-5012 USA
+1 713 274 5180                            "Zure otsoa besarkatu al duzu gaur?"
Newsgroups: comp.periphs.scsi
From: rlr@alumni.cs.colorado.edu (Roger Rose)
Subject: Fast SCSI controllers
Organization: University of Colorado, Boulder
Distribution: usa
Date: Tue, 5 Jan 1993 00:32:07 GMT

Does anyone have recommendations for SCSI host adapters which support
10Mb fast-synchronous transfers?  Ideally, the adapter should be able
to keep up with a continuous stream of data at this rate.  (One of the
uses will be benchmarking various products, so reading to a local FIFO
buffer to match a slow DMA rate would be inadequate for that part, but
might work for some of the other stuff I'll need to do?)

I haven't chosen a platform yet; however, both the adapter and the host
system must be sufficiently documented that I can reasonable build a
custom driver.  (Are PC ISA backplanes fast enough to sustain >10M/sec
DMA?  What about EISA, LocalBus, VME, Sun's SBUS...?)

Summarizing the question:  Are their any workstation class machines
and host adapters that are fast enough to get a true idea of a drive's
speed?

BTW.	If the system supports "fast" and "wide", so much the better.

-- 

Roger Rose  {rlr@boulder.colorado.edu}
Xref: sparky comp.periphs.scsi:6455 comp.sys.amiga.hardware:22855
From: scst116@csc.liv.ac.uk (Mr. E.M. Gaynor)
Newsgroups: comp.periphs.scsi,comp.sys.amiga.hardware
Subject: Re: A1200 colour problems (was Re: A1200 Monitors)
Date: 12 Jan 93 15:02:41 GMT
Organization: Computer Science, Liverpool University

In article <1993Jan8.092614.18842@aber.ac.uk>, ajr@aber.ac.uk (Ade Rixon) writes:
> In article <C0Fs36.B0F@cck.coventry.ac.uk>,
>  cmh061@cch.coventry.ac.uk (Batman) doodled:
> 
> > Can anyone help me with this problem?
> > My 1200 seems to have lost the colour white.! Its not the TV as I checked
> > my 500 on it, Its a real pain as the boot up screen is a shitty brown
> > colour.
> 
> This rang a bell. The other night my A1200 suddenly started displaying
> everything in monochrome. There was a flicker of colour while I was using
> it last night, but I think I will have to take advantage of my in-home
> warranty (boy, they're really going to like coming all the way out here!).
> Lucky I didn't install that hard drive yet. But is this some kind of
> generic fault with A1200s?
> 
> Ade_
>    /
> -- 
> | Ade Rixon                 / "...Too many people know too much. *I*	|
> | Email: ajr@aber.ac.uk     /  know too much. I know too much about	|
> | CS Dept, UW Aberystwyth,  /  *you*."		- The Prisoner		|
> | Dyfed, Wales, SY23 3DB.   / 						|
erm, me too, shitty brown is how I'd describe my boot screen (maybe with a hint of red!?!) except mine has always been this colour. I am using the same phillips
8833 that I used for 3 years with my A500 without problems, from the RGB of course. I know that it hasn`t lost white, though - white comes up fine apart from on the boot screen - which is why I never questioned the boot screen colour (apart from saying yuck :-) This is worrying, if anyone knows about this, could they tell me if I have a dud please. I love my A1200 and would be sorry to lose it now!!

email scst116@csc.liv.ac.uk - no modem yet
From: terry@spcvxb.spc.edu (Terry Kennedy, Operations Mgr.)
Newsgroups: comp.periphs.scsi
Subject: Re: Adaptec 1542B and Diamond 24X problems help !!
Date: 4 Jan 93 14:12:08 GMT
Distribution: comp
Organization: St. Peter's College, US

In article <goyal.726118016@pecan.cs.scarolina.edu>, goyal@cs.scarolina.edu (Sanjay Goyal) writes:
> On other occasions (under same mode), the program manager
> comes up, but it  displays error when attempting to
> display the group ... "The Group xxx.grp file is corrupted
> do you want to recreate it ?" ... and when I say NO ... the
> prgram manager does finally come up, but with the groups
> missing. Moreover some of the icons change from color to
> black and white.

  You've found one of the Windows 3.1 bugs. This problem has nothing to do
with your SCSI setup - it's entirely a Windows problem.

  Windows has an undocumented limit on the size of a .grp file. This limit
is 64Kb. [Undocumented means not in the User's manuals, not in the Resource
kit, and almost certainly not in the SDK (I only looked in the SDK briefly).
It may be on the Developer's Network CD - I'll go look later.]

  24-bit icons require 3 times as much space as 8-bit icons. I'm not sure
why Windows wants to convert them - it is quite happy displaying an 8-bit
.BMP as a screen background. Maybe it's another bug. When you first bring
up Windows after installing a 24-bit video driver (or a 16-bit driver if
you have enough icons in a group) it will attempt to convert all of your
.grp files to 24-bit icon format. If the size exceeds 64Kb, it will display
the "low on memory" message and leave the last icon(s) in the group(s) as
solid black. It will advise you to use "properties" to correct this.

  However, you will discover that the .grp files have been corrupted at this
point and attempting to use "properties" will make the icon(s) vanish!

  The only solution at this time is to limit yourself to about 14-16 icons
per group (check the size of the .grp files) to stay under 64Kb. Microsoft
seems uninterested in documenting or correcting this problem (the tech I
spoke to went "Ummm, that's very interesting."

	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
Newsgroups: comp.periphs.scsi,comp.sys.sun.misc
From: rmilner@zia.aoc.nrao.edu (Ruth Milner)
Subject: DATs and DAT tape prices
Organization: National Radio Astronomy Observatory, Socorro NM
Distribution: usa
Date: Thu, 7 Jan 93 19:03:33 GMT

There have been lots of posts about sources for cheap 8mm tapes. Does anyone
have a source for good-quality (such as Sony), 90m DAT tapes? I'd be interested
in both consumer- and data-grade pricing for comparison purposes. 

The last price we paid was $15.95/90m tape from Datatech, and this was
quantity 150. We just can't afford to go on like this :-).

DIC/DAT is not useful to us as we have a Wangtek drive which for some reason
doesn't like them (I posted about this a while ago; it has no problems at all
with Sony or Digital tapes, and it can read a DIC/DAT tape written by one of
our HP drives. But any DIC/DAT tape the Wangtek writes can't be read back on
anything. Could this be anything to do with threshold levels or something?).

Also, I have some questions about DATs. We know quite a bit about Exabytes
and their behavior, because we have quite a number and have used them for
some time, but we're new to DATs. All these questions pertain to DDS drives. 

    1. How long is a filemark (in terms of data capacity)? Does the length of 
       the filemark introduce any positioning restrictions?
    2. How many times does a DAT retry a read before reporting a media error?
    3. Does a DAT, like an Exabyte, rewrite data when it detects an error in
       data it has just written? Can it detect such errors in the first place?
    4. Is there the same kind of ongoing discussion about the merits of data-
       grade and the demerits of consumer-grade tape? And if so, are there any
       real conclusions? :-)

Thank you!
-- 
Ruth Milner                          NRAO/VLA                  Socorro NM
Computing Division Head      rmilner@zia.aoc.nrao.edu
From: jag@decvax.DEC.COM (John A. Gallant UEG)
Newsgroups: comp.periphs.scsi
Subject: Re: CAM
Date: 5 Jan 93 19:07:45 GMT
Reply-To: jag@zk3.dec.com
Organization: OSF Engineering, Digital Equipment Corp.

In article <C0CMrF.7Er@csn.org>, milton@teal.csn.org (Milton Scritsmier) writes:

>Wouldn't you at least expect the initiators involved to time-out a
>target if it fails to complete the command (because of the reset)?
>A time-out should generate an action such as an Abort message to the
>target followed by a retry (in which case the initiator would see the
>Unit Attention condition), or even a hard reset (but to avoid an infinite
>loop among all the initiators, they would have to be able to deal with
>seeing a reset themselves).

    Using a SCSI bus RESET, must be the last resort !  At a minimum it
can not be used as a valid error recovery for detecting a bus RESET :-).
There is a lot of code out there that have a bus RESET as part of the 
general purpose error recovery code.

>It seems to me that if an initiator in a system designed for multiple
>initiators cannot do something similar, it has no business being
>in that system. No doubt that's just wishful thinking...

    It is very unfortunate that the real world exists out there.  From 
the SCSI hardware; that's bus signals, ID #s, and phases; there can be
multiple systems on the SCSI bus.  This is *totally* a software problem,
I am including HBA firmware in this distinction.  There is nothing
stopping J-random user from trying to attach his two PCs onto the same
SCSI bus to share a printer or tape drive.  Oh well: "Fools go ....."

-- 
John A. Gallant                                jag@zk3.dec.com
Software Engineer - OSF Engineering Group
Digital Equipment Corp. (603) 881-2472

        In the common people there is no wisdom, no penetration, no
        power of judgment.
    Marcus Cicero
Newsgroups: comp.periphs.scsi,comp.unix.questions
From: lawrence@combdyn.com (Lawrence Chen)
Subject: Re: Interactive Unix w/ SCSI Install problem
Organization: Combustion Dynamics Ltd.
Date: Wed, 6 Jan 1993 19:05:13 GMT

In article <bh.930105100709@lab12.eng.auburn.edu> bh@eng.auburn.edu (Brian Hartsfield) writes:
>My system configuration is as follows :
>
>486-50 DX
>16M of Ram
>Adaptec 1542 SCSI Controller
>Fujitsu 520M SCSI Hard Drive
>Video 7 1024i Video Card
>Generic IO Card for serial/parallel ports
>Wangtec tape Drive and card (non SCSI)
>
I don't know how much help this is...but your running what I want to run...
meanwhile I have:

486-50DX
16M of RAM
WD1007 ESDI Controller
Maxtor 330M ESDI HD
Orchid Pro II
Everex IO card for 2 serial/1 parallel port
Wangtek Tape Drive and Card (QIC-02)

>I had Interactive Unix running on my 386-33 w/ IDE controller, but I am
>having trouble getting it to run on my new system listed above.  I run the
>install program and do the install from tape (I have tried installing from 
>the disks also and the results were the same).  It partitioned the drive
>correctly and copied everything to it, but when I reboot the machine, it 
>doesn't boot UNIX.  If UNIX if the only OS on the drive, I get "non system
>disk or disk error" message.  If DOS is in partition 1 and UNIX in 2
>(regardless of how the active partition is set, it boots DOS.  If UNIX is in
>1 and DOS in 2 the system checks drive a and then just sits there and
>does nothing.
>
>BTW, After I installed from tape, I did comfigure a new kernel w/ the 
>Adaptec Driver in it set up as the Boot Device.
>
>And an install from the floppy disks does the exact same thing.
>
I used to run on a 486-25DX with the everything else the same with no major
problems.  The installation worked fine from floppies, but the system didn't
boot from disk.

>Any suggestions?

This is what I did to get it working....take the machine out of turbo mode
and run it as an 8MHz machine until the machine is fully booted.  Actually,
after it starts mounting the filesystems seems to be an okay point too.

But, try this for starters....


-- 
 --EMAIL-----------------------------PHONE-----------FAX------------
 | WORK: lawrence@combdyn.com      | (403)529-2162 | (403)529-2516 |
 | HOME: dreamer@lhaven.uumh.ab.ca | (403)526-6019 | (403)529-5102 |
 -------------------------------------------------------------------
  disclamer = (working_for && !representing) + (Combustion Dynamics Ltd.);
Xref: sparky comp.periphs.scsi:6388 comp.sys.amiga.hardware:22609
From: ajr@aber.ac.uk (Ade Rixon)
Newsgroups: comp.periphs.scsi,comp.sys.amiga.hardware
Subject: A1200 colour problems (was Re: A1200 Monitors)
Date: 8 Jan 93 09:26:14 GMT
Reply-To: ajr@aber.ac.uk
Organization: University Of Wales, Aberystwyth - Party town!

In article <C0Fs36.B0F@cck.coventry.ac.uk>,
 cmh061@cch.coventry.ac.uk (Batman) doodled:

> Can anyone help me with this problem?
> My 1200 seems to have lost the colour white.! Its not the TV as I checked
> my 500 on it, Its a real pain as the boot up screen is a shitty brown
> colour.

This rang a bell. The other night my A1200 suddenly started displaying
everything in monochrome. There was a flicker of colour while I was using
it last night, but I think I will have to take advantage of my in-home
warranty (boy, they're really going to like coming all the way out here!).
Lucky I didn't install that hard drive yet. But is this some kind of
generic fault with A1200s?

Ade_
   /
-- 
| Ade Rixon                 / "...Too many people know too much. *I*	|
| Email: ajr@aber.ac.uk     /  know too much. I know too much about	|
| CS Dept, UW Aberystwyth,  /  *you*."		- The Prisoner		|
| Dyfed, Wales, SY23 3DB.   / 						|
Newsgroups: comp.periphs.scsi
From: angelini@apollo.hp.com (Bob Angelini)
Subject: Re: 30Mb tape -- why not working?
Date: Mon, 4 Jan 1993 20:21:56 GMT
Organization: Hewlett-Packard Corporation, Chelmsford, MA


The DC300A tape you are trying to use in your 525 drive is actually a 45Mbyte
tape. The DC300A is NOT compatable with the 525 drives. Also the DC600A tape
is a 60 meg tape. It WILL work on a 525 drive and give you 120 Mbytes of
capacity. 


Bob Angelini        angelini@apollo.hp.com
From: lliou@sdcc3.ucsd.edu (Lily Liou )
Newsgroups: comp.periphs.scsi
Subject: Micropolis 1.2GB drive, Model 1598-15.  Information request
Date: 10 Jan 93 20:51:32 GMT
Article-I.D.: sdcc12.43286
Organization: University of California, San Diego


Hello, netland !

  Does anyone have any experience or info with Micropolis' 1598-15
internal drive?  It is 1.2 GB unformatted,5-1/4in platters, 15 ms
seek, and suppoedly SCSI2 (altho I wouldn't be using that feature).
I'm looking to upgrade my system and am wondering whether this unit
is reliable, noisy, easy to install, or any other quirks or problems
or qualities it might possess.  I saw a unit for sale at ~$1500
last week, so I'm itching to get one, but not without reling
first on the net.wisdom for advice.
  Thanks for any and all help in advance!

-Lily Liou
lliou@sdcc3.ucsd.edu
Newsgroups: comp.periphs.scsi,comp.sys.ibm.pc.hardware
From: benz@ncsa.uiuc.edu (Benjamin R. Zaborowsky)
Subject: Re: Request anecdotal data on DTC-3280.
Originator: benz@troon.ncsa.uiuc.edu
Organization: Nat'l Ctr for Supercomp App (NCSA) @ University of Illinois
Date: Wed, 6 Jan 1993 23:08:14 GMT

In article <1993Jan5.040025.4815@spcvxb.spc.edu> terry@spcvxb.spc.edu (Terry Kennedy, Operations Mgr.) writes:
>In article <1iaggeINN5n1@fido.asd.sgi.com>, autry@magellan.stlouis.sgi.com (Larry Autry) writes:
>> What kind of scsi controller is this with regard to support and product
>> quality?  I am looking at purchasing the best controller for the least 
>> money (isn't everyone?) and the price of this board suits me.  
>
>  I just refurbished two systems that had these in them. Note that the ones
>I had were marked "preliminary" on both the board and the documentation, so
>they may have improved a bit.

Lots of stuf deleted that I really can't dispute in points 1 - 3.
However,

>
>  Fourth, DTC is hard to get a hold of. They don't supply a phone number
>in their manuals, and I don't believe they operate a BBS. Adaptec's phone
>number is listed, but you may have trouble getting through, and you may
>get someone who is, well, "underqualified" to help you. At least they have
>a BBS. BusTek tech support was very helpful and sent out free ROMs and man-
>uals (with Adaptec you pay... and pay...). Future Domain was a mixed bag.
>The first time I got a total flunky. The second time I got one of the board
>designers. With Future Domain you also pay. But just once - if it still
>doesn't work, they'll send free updates until they fix it. Adaptec just seems
>to want to sell you updates without admitting if they fix the problem. It
>seems they'd just like you to go away. Any of this is better than DTC, who
>I haven't been able to contact.
>

More stuff deleted ...

>
>	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

I can't comment on much of what Terry said, but I can relate my own
experiences with DTC.  Recently I needed some technical information on
the DTC-3280 card.  I faxed them a request early in the morning, received
a phone call at noon makin sure I was asking for the correct information,
and received 14 pages of faxed material that same afternoon.  DTC does
have a BBS and a very responsive sys op.  Both the BBS number and technical
support numbers are published in the manuals and installation guide.  They
too have an automated FAX service if you want pre-canned stuff.  I have
to agree about Adaptec - getting to a human being is tough.  The last
time I talked to them it took about 10 calls and two weeks to make
contact.  In their defense I must say that once contact was made, they
were very friendly and helpful.

Ben Zaborowsky    benz@ncsa.uiuc.edu
From: doctor@k9.UUCP (Paul Broe)
Newsgroups: comp.periphs.scsi
Subject: Re: Seagate and Macintosh...
Date: 6 Jan 93 04:53:34 GMT
Organization: Mostly Harmless...
X-NewsSoftware: GRn 1.16g (10.17.92) by Mike Schwartz & Michael B. Smith

In article <38335@cbmvax.commodore.com> jesup@cbmvax.commodore.com (Randell Jesup) writes:

[Stuff nuked...]

> 	I suspect that the Mac is only scanning early on.  Some SCSI drives
> ignore the bus for up to 10-15 seconds (Seagates are renowned for doing this,
> to the point that the "slow boot" jumper on Amiga SCSI controllers is often
> called the "Seagate jumper").  This is allowable under the spec, though the

I usually refer to them as Seacrates. :-)

> 	Have you tried warm booting?  Sometimes they come up faster from a
> warm boot.  Is there some way to slow down the mac's boot? (I doubt it).

I seem to remember that a Mac will wait longer for a drive that is set to
SCSI id 0, so you might try that. (That may only be true for older Macs like
the SE I had back then.)

-- 
----
Paul Broe
Internet: broe@plains.nodak.edu
UUCP: uunet!plains!prototype!k9!doctor (My Amiga 2500/20)    AmigaUUCP 1.16D
BIX: pbroe Compu$erve: too expensive.                        AmigaOS 2.05
Newsgroups: comp.periphs.scsi