Thread View: comp.periphs
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Started by CASSEL J BRIAN
Mon, 02 Nov 1992 04:33
basic question: will I need SCSI??
Author: CASSEL J BRIAN
Date: Mon, 02 Nov 1992 04:33
Date: Mon, 02 Nov 1992 04:33
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I'm going to buy a 486/33 local bus computer in the near future with plenty of bays available so that eventually I can add an internal CD and sound card, and internal tape backup, as well as an additional hard drive if I need it. What should I look for in a computer that will enable to make these future additions? Will I need to purchase a machine that already has a SCSI adapter? Since a lot of people seem to have problems with SCSI peripherals, is it possible for me to avoid it? What is the SCSI upgrade option that ZEOS is offering on its new PCs? My apologies if these are FAQs, but I've been reading the net and magazines for 6 months and this is one thing I can't figure out. Thanks. ___________ jbc@cunyvms1.gc.cuny.edu or post article disclaimer here.
Re: basic question: will I need SCSI??
Author: Jack Craig
Date: Tue, 03 Nov 1992 20:17
Date: Tue, 03 Nov 1992 20:17
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my suggestion would be start with the os you are planning to run.
unix, dos, whatever, see what driver suppoort that os has for various
scsi options. the built in scsi ports on ibm, sun, whatever seem
to me to be shades of brain dead. the best scsi controllers are the
commercial offerings, such as adaptec. you still need driver support
though.
just my $.02 worth...
jack...
=============================================================================
Jack Craig Microport SVR4 408-438-UNIX uunet!mport.com!jack
Software Horizons SVR3 408-684-1375 uunet!sco.com!blznrzn!jack
=============================================================================
Re: basic question: will I need SCSI??
Author: Eigil Krogh S|rensen
Date: Thu, 05 Nov 1992 18:44
Date: Thu, 05 Nov 1992 18:44
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Just a short comment: SCSI is used very much and there is nothing wrong with SCSI itself. The problem is that, even though SCSI has been on the market for 5-10 years, the compnies producing SCSI peripherials does not follow the SCSI specs. Or the specs. are to "lose". In the "good old dayes" when ST506/412 was used you knew that if you had a ST506/412 controller it for shure would run with a ST506/412 disk. With SCSI one can be shure that if the computer can run with one type of SCSI disks it can't run with others. So my advise is that you should avoid SCSI as far as possible, but as it is "in" I'm not shure you can get very many peripheriasls without SCSI. --- Eigil
Re: basic question: will I need SCSI??
Author: Dave Olson
Date: Wed, 11 Nov 1992 08:30
Date: Wed, 11 Nov 1992 08:30
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In <1992Nov5.184447.12112@daimi.aau.dk> eks@daimi.aau.dk (Eigil Krogh S|rensen) writes:
| SCSI is used very much and there is nothing wrong with SCSI itself.
|
| The problem is that, even though SCSI has been on the market for 5-10 years,
| the compnies producing SCSI peripherials does not follow the SCSI specs. Or
| the specs. are to "lose".
|
| In the "good old dayes" when ST506/412 was used you knew that if you had a
| ST506/412 controller it for shure would run with a ST506/412 disk.
You obviously weren't involved with disk drive qualification!
This wasn't true with either ESDI or ST506 drives. It isn't true
with SMD. It isn't true with IPI. It isn't true with XXX, where
XXX is any type of disk interface you care to name. Sure, in any
given category a lot of drives will work, at least most of the time,
but you certainly aren't going to find all of them working all of the
time, or anything even close to it.
| With SCSI one can be shure that if the computer can run with one type of
| SCSI disks it can't run with others.
Actually, current SCSI drives are *mostly* pretty good on this, at least
as good as in any of the other drive categories I have ever been involved
with at the disk qualification level, and probably better than some.
IDE I can't comment on, as I've never messed with it.
--
Let no one tell me that silence gives consent, | Dave Olson
because whoever is silent dissents. | Silicon Graphics, Inc.
Maria Isabel Barreno | olson@sgi.com
Re: basic question: will I need SCSI??
Author: Eigil Krogh S|rensen
Date: Wed, 11 Nov 1992 19:48
Date: Wed, 11 Nov 1992 19:48
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olson@anchor.esd.sgi.com (Dave Olson) writes: >Actually, current SCSI drives are *mostly* pretty good on this, at least >as good as in any of the other drive categories I have ever been involved >with at the disk qualification level, and probably better than some. >IDE I can't comment on, as I've never messed with it. >-- >Let no one tell me that silence gives consent, | Dave Olson >because whoever is silent dissents. | Silicon Graphics, Inc. > Maria Isabel Barreno | olson@sgi.com Just a short comment: I've spent 5 years rewriting I/O drivers, writing special programmes and tumbling with suppliers of SCSI devices because not two SCSI devices were compatible. Each supplier seem to make the bytes and bits in the SCSI- commands more or less different from other suppliers. The reason is that the SCSI specs. are to "lose". Even the Common Command Set allow much to much vendor unique stuff. --- Eigil
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