Wrong Drive Size Reported in Win7

[Joetech]

So i've cleaned/aligned my 2 Ps-100s (32GB) each.
I have them in Raid 0 on a Gigabye P55A-Ud3 board, on the Marvell Sata 6GB controller. They are showing as correctly sized on the controller and 59 GB there.

In Windows 7, disk management they are showing at well over 170GB. Any suggestions?
The motherboard's firmware is updated as well.

[Patriot_Ben]

That's strange. We've never come across this issue before.

Have you tried a refresh and/or restart? Try rescanning for plug and play devices. Can you verify that that device that shows up as 170GB reads as "PS-100?"

Do you have any other drives plugged in your sata ports? With the mobo off, try removing them all and plugging them back in.

[Joetech]

Thanks Ben, I tried reseating the cables, etc. The Marvel 9218 controller only has 2 sata ports on it. Somewhere I read, did mention that Raid 0 on SSD's with that controller wasn't a good idea, so I moved my DVD burner there, and put the two PS-100s on my standard ports.

They now show correctly as PS-100 with Raid 0 as 58 GB. I disk part clean all the array, and ATTO and Crystal show 500.8 MB seq read, and 145 MB seq write, with no stutter.

Any reason the write speeds are lower? (though the drives were 150 each?)

[Patriot_Ben]

Thanks Ben, I tried reseating the cables, etc. The Marvel 9218 controller only has 2 sata ports on it. Somewhere I read, did mention that Raid 0 on SSD's with that controller wasn't a good idea, so I moved my DVD burner there, and put the two PS-100s on my standard ports.

They now show correctly as PS-100 with Raid 0 as 58 GB. I disk part clean all the array, and ATTO and Crystal show 500.8 MB seq read, and 145 MB seq write, with no stutter.

Any reason the write speeds are lower? (though the drives were 150 each?)

Hey Joetech,

A possibility for this is because that Trim cannot pass through the raid array.

How long ago did you bench them? Consistent burst speeds can cause write performance degradations.

Are you running in IDE? You can try recreating the array in AHCI and performing a secure erase.

Also, are you on the latest 3.05 firmware? I would recommend flashing to this as well if not.

[Joetech]

Hi Patriot_Ben,

I benched them last night, then I always run diskpart clean all on them aftewards. Just to be sure they stay aligned after benching. They aren't OS drives yet (that's the plan). They are on fw 3.005 as well.

I have used Diskeeper Hyperfast, which does keep things stable as far as write speeds are concerned. Also, when non-raided, the drives are a little over 220 read and 100 write.

Being that they are in Raid, it puts them to AHCI mode, and when run non-raided, I keep them at AHCI mode as well.