2 x SSD Raid 0 - is this right?

[t_ski]

I bought two new OCZ Summit drives and hooked them up in Raid 0 on my ICHR-10 chipset, then loaded up Windows 7 x64 Ultimate RTM. After finding HDTach wasn't working right I ran Atto:

Rather dissapointed, as I expected reads around 400-440MB/s, and writes should be over 200MB/s. Is it the drive(s) or is there somethign else I'm missing? I don't think it'a the controller, as four 250GB Seagate drives in Raid 0 are much better:

Any clues? Or should I just scrap them and stick with my Seagates?

 

[Yamaki]

There is definitely something wrong with the controller or maybe your cables. The write scores for the Summits AND the Seagates are horrific. Not sure exactly how to fix that. Try using different sata cables?

 

[sonofander]

Just went through the same thing... Install IMSM and enable write back cache for the volume. You will be very pleased

 

[t_ski]

IMSM? Are you referring to Intel Matrix Storage Manager? You have a link for Windows 7?

It was indeed the write back cache though. I originally had it on, but when I ran HDTach, reads were under 200 MB/s for both arrays, when I knew the four Seagates were capable of 400-600 MB/s reads on previous setups. I turned the write-back cache off to try to correct this (IIRC having it on in XP was bad for benches), but saw no difference. I installed the Intel chipset drivers (with the -overall switch) to try to correct this, and it must have worked. However, I never turned the write-back on.

 

[sonofander]

Just go to intel's site, easy enought to find the download of the latest matrix drivers...

I'm running 3 vertex in raid 0 right now. Was getting ~150mb in hdtune, installed IMSM and enabled write back cache and now I'm seeing ~700

 

[Lanx]

Just go to intel's site, easy enought to find the download of the latest matrix drivers...

I'm running 3 vertex in raid 0 right now. Was getting ~150mb in hdtune, installed IMSM and enabled write back cache and now I'm seeing ~700

second this, 2 30g vertex raid0 was getting 150, did imsm and writeback, got 450, don't even have to reboot pc, effects are on the fly.