X server - black out - will not start shows folder with question mark at boot

Hi all, my name is adam. I don't know if anyone can help me. But I have an apple X server. Been working a treet until one day ago, it's an xserver2,1 ( model ) it has 3x 1tb hard drives installed in the front caddys slot one ( OS X ). The remaining are data NOT IN RAID.

we had a black out few days ago wile I was at work normally the server will just restart. But on this occasion it did not. When I got home to investagate I was presented with a folder with a question mark in it.

so I did the following

1 restarted the X server same result ( but the blue activity lights did not flash like they normally would green lights stay on solid )

2 took the hard drive with the OS X out of the caddy and put into a USB caddy. held down the option key tonboot from usb. The system came to life.

I Went to finder to see in my remaining 2 drive where mounted but nothing

so I opend disk utility still nothing

opend system profiler under hardware raid nothing is there

i have also opend the server case and re seated everything and I mean everything but I did notice a red light comeing from the bottom of the x raid controler

if anyone can help me would be grate