i680 RAID 0 Performance - is it bunged?

[Grinch]

No matter what I try I can never get an average read much over 100MB/s with my Raptors in RAID-0

The rig I had before it (P4 3.2C and Abit IC7) used to destroy the nF4 in HDTach...

let me guess.....your stripe size is over 16K?

[Grinch]

i was actually thinking of buying a couple of raptors but i noticed they are Serial ATA150 & not SataII. maybe that's the problem?

makes no difference the 150's will be faster than 99% of any SATA II drive simply because of it's rpm's

[Sumanji]

let me guess.....your stripe size is over 16K?

64k yeah. I just tried that tweak though (disabling read caching and command queuing) and average read has gone up to 122MB/s and burst to 238MB/s which is pretty cool!

Before:




Tweaked:



Are there any implications for disabling read caching though? Surely it's enabled by default for a reason...

Cheers,

Suman

[Grinch]

now if you had a smaller stripe size your graph would look more linear....and have higher numbers...but all of that is synthetic anyways...real world testing I dont use any programs at all....I use a stop watch!

[K404]

BUMP

Can anyone try RAID0 with non-WD disks? I've had a convo with someone and the suggestion of WD firmware came up. In this thread iv seen at least one 680I/Raptor combo unaffected by the saturation issue in HDTach. Still surprises me how many ppl use Raptors

Sooo...non-Raptor/non WD users...please can ya have a shot for me/us?

Cheers!

[Think]

2 x 150 raptors on 680i motherboard:




The trick to getting all the speed is here:




go into device manager...scsi & raid controllers...right click on nvidia 590/570/550 serial ata controller click properties..make sure primary and secondary channels look like this...reboot and rebench...you will see a difference..

I don't see anything there, what exactly did you do?

[tet5uo]

Here's my 2 WD caviar RE 250gb drives on DFI's 680i LT

[Think]

2 x 150 raptors on 680i motherboard:




The trick to getting all the speed is here:




go into device manager...scsi & raid controllers...right click on nvidia 590/570/550 serial ata controller click properties..make sure primary and secondary channels look like this...reboot and rebench...you will see a difference..

I don't see any images...can you please repost and give us a clue on what you have done to improve the performance or Raid drivers with the 680i motherboard?

Thank you.