Well you&#x27;d think that it wouldn&#x27;t be that hard to create a blade server style system using Raspberry Pi Compute Modules.  A 256 node, 1U server might just be possible.  Of course, the power supply, cooling and LAN fabric would be an interesting challenge.<p>Rather than 64 bit and ECC RAM, you could have high redundancy on the module level. AFAIK Google do not use server grade systems, just lots of them in a failure tolerant configuration.