From: John P . Looney (valen at domain tuatha.org)
Date: Mon 04 Oct 1999 - 13:56:56 IST
On Mon, Oct 04, 1999 at 12:20:08PM +0100, Jakma, Paul mentioned:
> > I concur..
> > Any UNIX is heavily I/O (file) intensive and hence the bottelneck
> > will not be (usually) the processor speed. Get the fastest disk
> > and controller you can afford.
> indeed. a decent scsi controller and disk is money much better spent than
> buying a 500MHz+ cpu for an IDE system. Price: well Symbios Logic cards
> aren't more than a £100 and beat Adaptec's any day.. scsi disks aren't that
> much more than UDMA.
> i'd rather have a P2-400 + UW scsi than a P2-600 + udma.
I'll tell you about that, once I get my home box working.
I've a Dell Precision with a pair of Quantum Altas IV UWSCSI drives in it.
It's much faster than my old UDMA33 6.4GB disk based system...though it
only gets around 13MB/sec reading from disk, and uses 13-17% of CPU to do
that. It's got an Adaptec AIC-7890/1 Ultra2 SCSI host adapter Ultra-2
LVD/SE Wide Controller in it.
Some tests, done by a friend with a ATA66 controller on a PCI card, with a
13GB IBM GXP22 (7200RPM & ATA-66) drive, with a HPT366 chipset gets around
18MB/sec, with 18% CPU usage - and it's considerably larger, and cheaper
than the SCSI drive. It's hard to argue with that.
Save money. Don't get SCSI, and get a whole extra CPU, and a faster disk!
-- Microsoft. The best reason in the world to drink beer. http://www.redbrick.dcu.ie/~valen
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