What would it take to build a cryogenic cooler?

[Shingoshi]

Big question: Why do you want to store liquid refrigerant??? A phase change unit is a circuit, you don't need to store cold refrigerant.

I'm building a system for 24/7 uptime. And the system will have multiple boards in it. So for safety concerns, I want a means to allow for safe shutdown in the event of compressor failure. Given the amount of wattage I'm building for (@8 cpus), the processors would have no reserve to keep them cool in an emergency.

I was thinking that two benefits might exist here.
1.) Quicker startup times if any shutdown is required for maintenance.
2.) It might lower the overall compressor load. Like a tank on an air compressor.
EDIT: And this ties both of the above into a single concern. It would take a long time to bring the system up to capacity to handle the load of all the processors. It would take even longer if any graphic cards are included. Having the reservoir would eliminate that problem.

I would use a switch based on my system's activity led, which would turn the tank off only when the computer is actually down. That way if the compressor went offline for any reason, the system would still have a reserve of coolant.

Shingoshi