[NTLUG:Discuss] Disk performance.

[Richard Geoffrion]

As far as compatibility and speed goes,  I used two  Adaptec 39160 drives
with 10000 RPM LVD SCSI drives (IBM in my case).

I put them on a PIII-500  w/256 Meg ram running Red Hat 6.2   The document
imaging server on which I used these parts performed VERY well, but I don't
think the CPU was the bottle neck in my case.  I wasn't uncompressing
images.


-----Original Message-----
From: Steve Baker <sjbaker1 at airmail.net>
To: NTLUG DISCUSS <discuss at ntlug.org>
Date: Wednesday, December 13, 2000 2:41 PM
Subject: [NTLUG:Discuss] Disk performance.


>
>Does anybody here have much experience of measuring disk drive throughput
>rates?   It's an area of PC computing that I know very little about.
>
>I have an application that needs to load large (multi-megabyte) files very
>quickly from disk for long, sustained periods.  The nature of what I'm
doing
>means that caching data in RAM won't help because I don't read the same
>file twice (well, not until we've loaded many, many Gigabytes of other
stuff
>along the way).
>
>On my PC here at home (which has a 450MHz CPU and a vanilla low-end 20Gb
>IDE drive) I'm managing to load about 5Mbytes/sec. (These files are 'PNG'
>images - and they have to be uncompressed on-the-fly).
>
>My question is - if I go out and pick a good disk drive - or several
>drives - SCSI or IDE or whatever else works - or perhaps a RAID array
>or something - slap in a 1GHz CPU on a good motherboard...what kind of
>speedup would you expect I would get?
>
>I'm hoping to get at least 20Mbytes/sec - more would be good.
>
>--
>Steve Baker   HomeEmail: <sjbaker1 at airmail.net>
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>
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