workstation SCSI disk I/O performance

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1 total messages Started by Tim Lynch Wed, 10 Oct 1990 18:20

#922

Author: Tim Lynch
Date: Wed, 10 Oct 1990 18:20

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Hello,

My section is in the process of choosing a workstation that will
manage a very large database.  Over ten gigabytes.  We expect an average
user load of maybe 8 users.  Due to budget constraints, we must consider
a low-end workstation and will probably try to save additional monies by
purchasing third party SCSI disks to obtain the ten-plus gigabytes needed.
My questions have to do with disk I/O;  I hope someone can provide me
with some comparative data on DEC, Sun, and IBM workstations.  Sorry, I
don't have particular model numbers in mind, but we hope to keep
expenditures on the main box, without disks, under $25,000.

1.  Does anyone have any experience on performance of vendor-supplied
	vs. third-party SCSI disks on any of these machines?  Benchmarks?

2.  The October issue of "Unix Review" compared the IBM, Sun, and DEC
	machines among others.  The article included some charts on
	disk I/O with the IBM looking significantly better than the
	others.  Does any know to what extent that performance was the 
	result of driver/controller vs. the hard drive?  If we should 
	buy an IBM workstation and plug in third-party SCSI, do we loose
	this performance edge?

Thanks.  I'll summarize or respond via email to anyone asking for 
copies of what I learn.

Tim Lynch

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