Lost contact with hard drive

Hi

I have been running Parallels for a couple of years now, but this is the first time I have run into a big problem. I tried to search for similar posts, but did not find any (foregive me if I am double-posting, or if this is posted in the wrong category). Any help would be highly appreciated!

I have a Mac Pro 2x2.66GHz Quad-core, 32GB RAM running at Mac OSX 10.6.3. I Have Parallels Desktop 5 for mac, running a Windows 7 OS. The mac has a 2TB software RAID on wich I have set up a expanding virtual harddrive for usage by the Windows OS.

A couple of days ago evereything was allright and functioning. The next morning I had lost all contact with the RAID (and the virtual HD). I got an error message, but finally managed to backup the virtual HD from mac OS.

The RAID is functioning normally in mac OS, but there is no way for me to get "in contact" with the virtual HD on the RAID. Actually, I can´t even get the RAID up as a HD in My Computer in Windows.

Does anyone have an idea of what the problem might be?

I´ve allready reformatted the two hard drives in the RAID, tried a rebuild of it also.