Hi pegerob
DM ask me to have a chat with re what your trying to do.
My hard experience is limited the the board and setup in my sig ....but because it's X58 they should be pretty similar
Option Rom space is mostly applicable to the boot drive and what you're trying to drive off it....with later boards it will become less relevant with bigger Option Rom space with the UEFI platforms.....because they will just have more space......but we have what we have!
The problems I had was ......I had and installed the RevoDrive x2 ..... no real problems there .....well a few but got around them.
The real problems kicked in when I added a Highpoint Rocket Raid PCI-e card......these are configured out of the box to be bootable.....what I had attached is irrellevant here.......the result was I had too much being copied to the option Rom on boot.......luckily I could via the configurable flash utility on the 640 raid card.......turn off a few settings which made it then non bootable.....I still had the Raid ability but was now able to boot again.
I'm afraid you'll be like I was and some experimentation is in order
the RevoDrive has a RAID0 controller on the PCIe card so why does the motherboard controller get involved?...Answer....
The RevoDrives are actually 4 x 25GB units Raided under Raid0 .....there made to run under IDE or ACHI.....Via not one but 2 onboard Raid controllers (On the PCI-E Card).....
Not certain as to what you read on the OCZ website but Besides my Revo x2 running in ACHI......I have the Raid card with 4 HDs in Raid0 and I have 2 other Drives running Raid0 again but this time on the ICH10R Raid controller
AND 10GBs of system memory running with RAMDISK
.....I will not lie and say this was
"EASY".......Just that it can be done!.....
Now things have moved on as it does pretty quickly ATM.....you might want to look at what I'm planning for my next build for C: drive.
120Gb OCZ Agility 3s can be had for about £120 at the moment......Lets say you got your mitts on 4 of these......they actually Raid pretty well.
So that will give you 480GBs space for C; drive.......for about 2000MB/s read and write speed......
What!.....2TB read and write ......Yup!
Even if you had two running sweet.....these would out perform the RevoDrive x2 but not the X3........but 3 will.....worth a thought is it not!
Worse case scenario is you might have to add a 6Gb/s raid card to hold them.....but if I was you ....I'd be trying the Intel controller first .
Feel free to ask any questions I missed out on.
Aussie Allan