Path: utzoo!utgpu!cunews!bnrgate!bwdls58!bcarh660!dwjz From: dwjz@bcarh660.BNR.CA (Doug Zolmer) Newsgroups: comp.sys.amiga.hardware Subject: Re: SCSI-1 vs. SCSI-2 Message-ID: <6034@bwdls58.bnr.ca> Date: 14 Mar 91 14:39:53 GMT References: <1991Mar8.200331.5111@javelin.es.com> <1991Mar11.163108.12361@hollie.rdg.dec.com> Sender: news@bwdls58.bnr.ca Reply-To: dwjz@bcarh660.BNR.CA (Doug Zolmer) Distribution: world Organization: Bell-Northern Research Ltd. Lines: 36 In article <1991Mar11.163108.12361@hollie.rdg.dec.com>, krauss@mansw1.enet.dec.com (Michael Krauss) writes: |> In article , andrewsr@u2.rutgers.edu (Rich Andrews) writes: |> |> >Where can I get SCSI-2 drives? (Looking for ~200MB, maybe Quantum). |> > |> >How much more expensive is SCSI-2 than SCSI? |> > |> >If there are no good (or too expensive) SCSI-2 drives around, is it |> >worth waiting for them to come out (or drop in price)? |> > Why do people feel the need to get SCSI-2 over SCSI? Properly implemented, SCSI will give you performance that is more than adequate for 99% of what anybody would ever want or need. Commodore's A2091 and MicroBotic's Hardframe 2000 can give transfer rates as high as the bus will allow. In everyday use, my Hardframe 2000 gives me read rates of 975 kilobytes/sec. Believe me, this is plenty fast - much faster than I've seen on any other consumer-grade personal computer. SCSI-2 was designed for very high throughput devices for things like real-time transaction processors (Tandem springs to mind), used by banks (for automated teller machine transaction handling) and telephone companies (for LIDB and 800 database transaction handling). It allows disk shadowing and is designed for fault tolerance - hardly things that most personal computer users need. For the added expense, SCSI-2 will not give any marked advantages over regular SCSI in the average personal computer. -- Doug Zolmer | My opinions are | Bell-Northern Research Ltd. uunet!bnrgate!dwjz%bcarh660 | mine only and do | Dept. 7N53, Mailstop 089 dwjz@bcarh660.BNR.CA | not reflect BNRs. | P.O. Box 3511, Station C Voice: +1 613 763 8217 FAX: +1 613 763 3292 Ottawa, ON, K1Y 4H7, CANADA