Here are some stats on a 16-bit fast wide single-channel ICP Vortex PCI
RAID-5 card on a 3-drive array.
The drives are Fujitsu 9.1 Gig narrow M2949 drives (14.x Meg/sec
theoretical limit on speed). The system is a 233MHz Supermicro Pentium MMX
on Redhat Linux 5.1, with 128 Megs of RAM. When I ran these numbers with
bonnie -200 I was running X11 and some other fairly lightweight processes
like radiusd, idle sendmail, etc. at 4am. So not much load on the server
if any.
I have the Crucial 50-nsec 16Meg SIMM installed on the RAID card. Don't
know if 32M SIMMs would make bonnie numbers look that much better, though
I'm sure it wouldn't hurt. Firmware was the July release. There is a beta
out (final due December) but I'm not brave enough to try it.
The cable length is 1.5 feet from the card to an external RAID chassis, and
then an actively-terminated ribbon cable in the external case, maybe 2 or
2.5 feet long.
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
200 2419 34.3 2829 17.7 1865 21.2 3821 41.8 5767 27.2 148.0 6.8
Comments on these numbers welcome, I just briefly scanned the bonnie web
page before choosing a 200Meg file.
Chris
