Raptor speed in raid 0 not seem right

[splateee]

Hello,

i just upgraded my system to the following

xp barton 2500
2 x corsair pc3200 256meg
msi K7N2 Delta -ILSR mobo
2 x WD raptors in SATA raid 0

i set the raid up with a 64k stripe size. When i ran sandra i got a score of 22,965 is this because of the stripe size? This seems way to low, my 80gig wd got a higher score then this.

I checked the onboard Promise SATA raid controller and it said that the drives were running in mode U5 which is a 100mb/sec....now these drives are rated for 150mb/sec....this can't be right.

this is the score i got in pcmark

http://service.futuremark.com/compare?pcm=1314662

Is it the onboard controller causing the low scores in sandra?

Any help or ideas would be great.

Thank you

[deathstar13]

the pcmark looks on the mark.
sandra can be flakey,so over look that for a bit.
try atto and hd tach and look at those.should be in the 100,000 area on the end of them.

my isp is blowing chunks and i cant download pcmark to compare for ya.do a search here and you can find some of my sandra and atto benches to compare with.

[splateee]

thnx for the reply,

i was wondering if sandra was lying :P

my other question is why doe it say i am running in mode U5 which is 100mb/sec in the configuration setup in the onboard Promise SATA controller? I think it should be higher.


thank you

[latinag]

Should say UDMA 6.

[Sonny]

The speed gain will not be from the interface but from the spindle speed, no single drive configuration will hit 150MB/s not even 15,000RPM SCSI drives. When you compare HDD performance try ATTO & not PCMark or Sandra.

[splateee]

ok here is a link to the benches i ran using atto and sandra.

http://us.f1.yahoofs.com/users/8592573c/bc/benchmarks/__hr_bench1.jpg?bcbdN0.Ac7t16N_q


i went and did a reinstall of XP and changed my stripe size from 64k to 32k, nice improvement.

thank you