Sorry not sure, that's some unusual hardware you're using, maybe someone else will be able to chip in.
I'd recommend looking for a kill switch in the BIOS of the machine.
Something else, if when you're trying to install you don't see a hard drive you should also check the BIOS. Lenovo has been known to use dumb RAID settings on its hard drives (dumb because a RAID with only one drive has no point) using proprietary drivers that Linux can't handle.
Lastly, if you decide to go ahead with the install and everything is fine, please consider posting your hardware specs in this thread: