Hi
A little mis information I'm afraid.
The Mobo is a GA-X58A-UD5 rev 1 Bios F4. 12Gb RAM, 470 Graphics card, Blackmagic Design Studio card. I've been using 4 x 1.5 Gb hard drives on the Intel on-board Raid controller, which works fine but experiencing speed problem on HD footage. I bought a RocketRAID 2720 and 4 x Seagate Barracuda ST2000DL003 2Tb hard drives.
Using the GUI to set up the Raid is OK at first, then after 10 seconds or so a disc will drop out, disabling the Raid. Them another will drop out and so on. Re-scanning the drives doesn't bring them back up, they dissapper until a re-boot. Tried single disc and 2 discs both as RAID 0 and JBOD, still drops out. Moving the SATA breakout cable to the second set of ports on the 2720 has no effect, still discs drop out. Not a power issue, large HQ PSU.
All software up to date except Mobo Bios which I'll try later.
Seems odd that previous poster has exactly the same problem.