🚀 go-pugleaf

In <4e7245$822@karri.bs.wa.gov.au> jimm@fcs.wa.gov.au (Jim McGrady) writes:

>In article <DLLHs5.7v1@netzservice.de>, ut@netzservice.de says...
>>
>=>In <31013DCD.1901@primenet.com> prefix <prefix@primenet.com> writes:
>=>>The new FAST ATA-2 IDE hard drives in Mode 4 can out perform some SCSI 
>=>>hard drives.
>=>_some_
IDE: The Quantum Fireball 1G. But watch out! There are two almost identical
named models out. One is slower and cheaper, but even dealers fail to
sort that out.
The WD AC21000 & WD AC31600 are a bit slower.

Performance:
Drive		Read min/aver/max	Write min/aver/max	Overall
WD AC21000	3.09/4.74/6.04		2.87/4.50/5.99		3.15
WD AC31600	3.10/4.76/6.02		2.84/4.58/5.99		3.18
Fireball 1080A	2.99/4.98/6.09		2.99/4.98/6.08		3.35

>=>You could simply buy SCSI drives which are as fast as or faster than any
>=>IDE drive. The difference in price is not the big issue anymore.
>=>A really fast drive _isn't_ cheap - if it's SCSI or IDE.

Avoid the Quantum 1G SCSI version. It's SCSI interface is braindead and could
not keep up with the drive (no, I couldn't state that often enough ;-).
Else, look for RPMs. If it's 7200 look closer. If it's 5400 look at the
price, else look away (for a fast drive).
Fast SCSI drives are (no particular order only as examples):
Drive			Read min/aver/max	Write min/aver/max	Overall
Fujitsu M2934SA (4 GB)	1.68/6.85/7.28		3.65/6.52/7.29		3.65
IBM DORS-32160 (2 GB)	3.63/4.70/5.47		3.63/4.70/5.47		3.05

Measuring was on an Asus Pentium board with PB-cache, EIDE on board, SCSI
with NCR8251S under D*S. All shamelessly stolen from various c't mags.
They used their own benchmark program H2bench, all values are in MB/s.
Overall is an weighted average value, reading 60%, writing 40%.

Uli

-- 
Dipl. Inf. Ulrich Teichert    e-mail: krypton@netzservice.de
Stormweg 24                   listening to: Failure (Pluto)
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