*BSD News Article 50205


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From: rcarter@best.com (Russell Carter)
Newsgroups: comp.periphs.scsi,comp.os.linux.hardware,comp.unix.bsd.freebsd.misc,comp.os.linux.setup
Subject: Re: SCSI PCI host adapter
Date: 29 Aug 1995 00:26:20 -0700
Organization: Best Internet Communications, Inc. (info@best.com)
Lines: 44
Message-ID: <41ufes$3fd@shell2.best.com>
References: <418r3m$9c6@trauma.rn.com> <41rqk7$2oj@mailhub.hcl.com> <41sjek$rtu@bonnie.tcd-dresden.de> <41stbt$db@trauma.rn.com>
NNTP-Posting-Host: shell2.best.com
Xref: euryale.cc.adfa.oz.au comp.periphs.scsi:36628 comp.os.linux.hardware:14732 comp.unix.bsd.freebsd.misc:5429 comp.os.linux.setup:18926

In article <41stbt$db@trauma.rn.com>, Larry Snyder <larry@trauma.rn.com> wrote:
>In article <41sjek$rtu@bonnie.tcd-dresden.de>,
>J Wunsch <joerg_wunsch@uriah.heep.sax.de> wrote:
>>Rudy Amid <rudy@hcl.com> wrote:
>>
>>>  How does the NCR controller compares to the Adaptec AHA2940 PCI controller?
>>>The price difference is one, but what about performance?
>>
>>I remember some figures that claimed the AHA2940 could get about 20 %
>>more than the NCR.

Ho hum.  It's a bit more complicated than that, and simpler ;-)  For a simple
minded performance comparison, check out http://www.geli.com/data/disk.perf.html

What I take from that is the drivers have essentially the same performance.  
Both are superb, and drive these disks about as fast as they can go.

*However*, the 2940 driver supports a number of drives the NCR driver does not.
As I write this, I'm building my first world on a $965 Grand Prix 4.3G, which I don't
think is possible with my old friend the ncr driver.  The NCR driver works 
terrific on Q Atlas drives though.

The NCR driver in Linux has suffered through a lot of ups and downs. 
Not so the FreeBSD driver, it has been cranking along at full disk speeds
for about 13 months now.

>
>considering it's about 2 to 3 times the cost..  On another subject,
>I can only find the NCR for $129 in the Computer Shopper and it 
>"comes with software".  Previous articles mentioned here reference
>it's availablity for around $80.  Where can this adapter be picked
>up for around $80?

It generally runs $70 in the Bay Area, though there are cheaper sources.

>
>-- 
>Larry Snyder                                       larry@rn.com larry@iag.net
>Systems Administrator                              Internet Access Group, Inc 
>Connecting Florida to the Internet                407-786-1145 / 800-380-4IAG
> * providing leased lines / dedicated / dialup / Web services / Consulting *

Regards,
Russell (3rd generation South Floridian, now inhabiting various western locales)