EXP 400 disk unit removed from IBM 346 serve, raid config

I have a ibm xseries 346 with a disk expansion unit, exp 400 disk array.
The server has 2 disks set up as raid 1, these run the os. This server currently runs exchange
The disk unit has 11 disks including a hot swap.
We have an onboard scsi controller and a 6m server raid card.

We moved offices yesterday and a idiot IT guy disconnected the scsi cable connected the disk array from the server with out making a note of which channel or card the unit was connected too. I now have to connect everything up but have no idea which controller was used, and I can not afford to lose the data on the disks as an exchange restore would be a complete nightmare. What do you think the best way would be to work out which channel the disk unit should be connected too

Regards

Dej
dejul23Asked:
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thur6165Commented:
You can figure out which raid card has the config by going into the RAID bios of each one and seeing if there is a configuration set.  I would bet its not the onboard card and would start with the extra card.  Once you get that you'll still have to figure out which channel goes where by trying some different cable arrangement.  The worst that will happen is the system wont boot and you'll need to keep move the cable until you get it.
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