Scsi I/O speed

From: Kevin Kostyszyn <kevin_at_dulcian.com>
Date: Wed, 11 Jul 2001 08:57:41 -0700
Message-ID: <F001.00347404.20010711082135@fatcity.com>

Hi all,

        I was measuring the i/o performance of my scsi drives and I have a quick question that maybe someone could shed some light upon. Currently I am using Ultra 2/Wide scsi conrollers, this is supposed to have an I/O of 80mb/s. Well, when I perform the test all of the machines seem to be operation at halp of the max speed. One operates at about 20mb/s read and write and the others are even slower than that. Now on the first one, it is the only HD on the controller, on the others there are two disks. Even on my Ultra/160 it seems to be maxing out at 40 read and write.

        Am I missing something? Am I reading this the wrong way? Help:(

Sincerely,
Kevin Kostyszyn
DBA
Dulcian, Inc
www.dulcian.com
kevin_at_dulcian.com

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Author: Kevin Kostyszyn
  INET: kevin_at_dulcian.com

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