Hello Fernando,
Coud you tell me please, if it's possible to this board P6t6 WS to use 2 Hd 3 To in raid ?
I try to replace intel raid rom v10.8.0.1303 at ID 20 loc 8086:2822 with mmtool322 with no sucsess .
Thanks a lot
alex

Thank you :)
My mainboard : asus P6T6 WS Revolution
Last Bios 0905
http://dlcdnet.asus.com/pub/ASUS/mb/sock...4029.1478365244
Regards

The only way is trying to Flash it :) the original intel from 0905 is 40,5 Kb i tryed many roms version but they 're always bigger than 40.5Kb !
I thing it's problem .

Aloha Fernando's Forum,
I have been through many of the pages here before making this post. I have finally come to the conclusion that I need a little help. Forgive me if this is the wrong place for this. I am in a similar boat here where I just acquired 2 new 3TB drives. (Exciting) After much heartache I cannot seem to find a bios tool that will allow me to update my Intel MSM RAID ROM to a better version. I have tried using the AMI MMTool v3.26. However perhaps I am missing something. Different things that I have followed on this form are these different posts.
BIOS Modding: Introduction and Preparations,
AHCI & RAID ROM Modules
[Guide] How to flash a modded ASUS/ASRock/Gigabyte AMI UEFI BIOS <- I do know that I do not have a UEFI bios. Simply trying everything.

If someone could point me in the right direction to get this asus of mine to a more compatible state, with Win 10 & 3TB drives. That would be awesome!
Best,
609shadow

@609shadow
Albeit not exactly your use case, I did get 2 x 2 TB Seagate SSHDs with an X58 motherboard to work in RAID-0 mode with Intel RST(e) RAID ROM v15.0.3.2675. The caveat is that I needed to crossflash it with another BIOS as my ASUS P6T Deluxe V2 did not originally accept such a large Option ROM. But thankfully the one of the P6X85D-E is compatible with it and provides more room for the Option ROM. Windows 10 didn 't accept a single 4 TB volume though, but I could work around it by creating two 2 TB volumes.

@Fernando
I have read that you usually recommend the 11.2 OROM with corresponding drivers for the ICH10R. I just wanted to let you know from my own extensive testing that I do get pretty good numbers with the combination of this v15.0.3.2675 OROM with the 13.6.3.1001 RSTe drivers in Windows 10 x64. The stripe size of 64k was the key that gave me the best experience. I had tried it with 4k first, but the read speeds were underwhelming.

Sure, here the results with this mixed combination with the 64k stripe size:

Chrystal Disk Mark 5.1.2 x64:

Sequential Read (Q= 32,T= 1) : 177.239 MB/s
Sequential Write (Q= 32,T= 1) : 359.958 MB/s
Random Read 4KiB (Q= 32,T= 1) : 3.505 MB/s [ 855.7 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 9.826 MB/s [ 2398.9 IOPS]
Sequential Read (T= 1) : 159.577 MB/s
Sequential Write (T= 1) : 372.668 MB/s
Random Read 4KiB (Q= 1,T= 1) : 1.545 MB/s [ 377.2 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 10.194 MB/s [ 2488.8 IOPS]

I have attached the ATTO results. The results do fluctuate though. Especially in Chrystal Disk Mark. I haven't kept the results of the 11.2 combination but from my memories the read speeds were vastly inferior. Especially in ATTO with transfer sizes above 512 kb the read speeds went into the 40 - 60 MB region. Write speeds were never a problem for me with all combinations, nearly maxing out the theoretical maximum of SATA 3G. This could be specific behavior of my SSHD drives though. You have benched with SSDs.