Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!sjsca4!poffen
From: poffen@sj.ate.slb.com (Russ Poffenberger)
Newsgroups: comp.periphs.scsi
Subject: Re: How much faster is a 16 bit SCSI Card than the ST02?
Message-ID: <1991May30.214935.29356@sj.ate.slb.com>
Date: 30 May 91 21:49:35 GMT
References: <396@oiscola.Columbia.NCR.COM> <3167@ria.ccs.uwo.ca>
Reply-To: poffen@SunOS (Russ Poffenberger)
Organization: Schlumberger Technologies, ATE division, San Jose, Ca.
Lines: 33

In article <3167@ria.ccs.uwo.ca> wlsmith@valve.heart.rri.uwo.ca (Wayne L. Smith) writes:
>In article <396@oiscola.Columbia.NCR.COM> dmoyer@oiscola.Columbia.NCR.COM (Dan Moyer) writes:
>>
>> 
>>220-300 K bytes/sec transfer time, and a 28-31 ms access time.
>>These figures seem reasonable for a 8-bit, dumb scsi board and
>>this disk..
>> 
>>I am considering purchase of a 16 bit board.
>> 
>>I currently operate DOS and sometimes Windows 3.0 now.   Sometime
>>in the future (6-12 months), I'd like to be able to use OS/2 2.0 or
>>Unix.  
>> 
>I have had the same combo in my 286 (296N/ST02 controller)
>I have low-level formatted the drive using the ST02 bios, using 1:1, 2:1, and
>3:1 interleaves.  The one that worked best was 2:1.
>At 2:1, both Spinrite and Core gave 425 +/- 25 KB/sec transfer rate.
>The 1:1 gave less than 100 k/sec, and 3:1 was less than 2:1 (I forget what

[stuff deleted]

>Someone else will have to tell you what to expect with a 16 bit SCSI
>card, but I hear that Adaptec is best.


I get 1.3Mb/sec from my Adaptec AHA1542B and CDC Wren IV (320Mb) combo. This
works quite well.

Russ Poffenberger               DOMAIN: poffen@sj.ate.slb.com
Schlumberger Technologies       UUCP:   {uunet,decwrl,amdahl}!sjsca4!poffen
1601 Technology Drive		CIS:	72401,276
San Jose, Ca. 95110             (408)437-5254