Attempts to do this are being made in academia. Some recent work tries to quantify the network requirements of this, and decides that it's far more feasible to

Attempts to do this are being made in academia. Some recent work tries to quantify the network requirements of this, and decides that it's far more feasible to use some local memory as a caches than to have everything be remote. Network requirements: https://www.usenix.org/conference/osdi16/technical-sessions/presentation/gao https://www.usenix.org/conference/osdi16/technical-sessions/... Two systems that use remote memory: https://www.usenix.org/conference/nsdi17/technical-sessions/presentation/gu https://www.usenix.org/conference/nsdi17/technical-sessions/... https://www.usenix.org/conference/osdi18/presentation/shan https://www.usenix.org/conference/osdi18/presentation/shan