Correct me if i am wrong as I have no idea of diskless system.
Dont we have to have at least 64gb of RAM of we need to do this? Does the entire system store in the RAM? If so then 20gb for OS and another 16gb for Miner Ram and at least 8gb for System.
If you mean on the server side:
You could put all of ths os into a ramdisk, but all that would do is make it read faster and be able to be sent over the network faster, but would still be limited to the networked speeds
if on the client side: yeah you'd probably need a fair bit of ram to be able to hold everything, or some sort of scratch disk. Good point there, though I am not sure you would need 64gb of ram that seems a bit much