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Newsgroups: comp.unix.bsd.freebsd.misc Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!news.sprintlink.net!howland.reston.ans.net!torn!watserv2.uwaterloo.ca!undergrad.math.uwaterloo.ca!bcrwhims From: bcrwhims@undergrad.math.uwaterloo.ca (Carsten Whimster) Subject: Re: SCSI - throughput Message-ID: <DFBBvL.4tJ@undergrad.math.uwaterloo.ca> Sender: news@undergrad.math.uwaterloo.ca (news spool owner) Date: Fri, 22 Sep 1995 15:18:56 GMT References: <43bufs$ekb@nx2.hrz.uni-dortmund.de> <1995Sep21.090850.12239@wavehh.hanse.de> Nntp-Posting-Host: cayley.uwaterloo.ca Organization: University of Waterloo Lines: 42 In article <1995Sep21.090850.12239@wavehh.hanse.de>, Martin Cracauer <cracauer@wavehh.hanse.de> wrote: | ab@distler.maschinenbau.uni-dortmund.de (Andreas Braukmann (NetAdmin)) writes lossy compression | >Should I switch back to the 1742? As I need the two SCSI-channels, I would | >have to find a second 1742, ... and that does'nt seem to be that easy these | >days ... | | If you find the difference between the iozone numbers for the 1742 and | 2742 significant for your needs, maybe you should consider buying a | PCI-based 486 board. You should get about 5 MB/sec from your IBM 4.3 | GB using an NCR controller, so your EISA equipment seems to limit it | anyway. | | As you need more than one SCSI bus, I think an ASUS SP3G Mainboard | (with one onboard NCR) and an additional SC-200 (NCR card) may be | cheaper than buying two 1742, as you can reuse your CPU chip. Make | sure the SP3G really has a decent enough PCI implementation to run a | second NCR controller, many older PCI boards have not. I have an ASUS PVI486-SP3 (486 PCI motherboard), and have the opportunity to buy an SC-200. What is the performance difference between a card like this, and a higher-end card like an Adaptec 2940? The price is about $100 vs. $3-400 CAN, but I don't want to buy a SCSI card which will barely outperform an EIDE system, which is what I have. Also, what are some decent cached SCSI cards? I have an old VLB Promise IDE 4Mb cached controller, and I want to exceed the performance of this piece before I buy. Suggestions? Is there a SCSI buyer's FAQ somewhere? How about SCSI-III? Is it worth waiting for, and what will the differences be? BTW, what exactly is the SC-200 anyway? SCSI-II? wide? fast? -- Carsten Whimster bcrwhims@uwaterloo.ca EDM/2 Associate Editor and Book reviewer Team OS/2 POV-Panel/2 author http://www.undergrad.math.uwaterloo.ca/~bcrwhims/