A few years ago, somebody got a Cray 2, barrels of Fluorinert and all, and was going to restore it. Whatever happened to that? Probably not much.
Restoring old computers is a huge task. The Computer Museum in Mountain View worked for years to restore an IBM 1401, a small mass-produced machine from the 1960s. They had techs who'd worked on them and access to the original designers, and it was still very hard.
Kids these days with their data center-sized supercomputers which are a bunch of x86 rack servers in a big cluster. Back in the 80s and 90s, supercomputers looked the part, and had cooling waterfalls
The biggest challenge may be powering it up. The brochure says it sucks down 300 kW. I'm guessing it'll need a 440V polyphase feed to run the 400 Hz motor generators...
Restoring old computers is a huge task. The Computer Museum in Mountain View worked for years to restore an IBM 1401, a small mass-produced machine from the 1960s. They had techs who'd worked on them and access to the original designers, and it was still very hard.