Because RDMA latency is still a lot lower than disk access latency, it depends more on whether or not the control logic can be generalized to distributed scale

Because RDMA latency is still a lot lower than disk access latency, it depends more on whether or not the control logic can be generalized to distributed scale with some simple refactoring and a few calls to access remote shared memory, or whether a full-on rewrite is less time-consuming. I don't know, and I don't pretend to know. All I know is that the semantics of RDMA (absent experience writing code that uses RDMA) deceive me into thinking there's some possibility I could try it and not end up regretting the time spent on a proof of concept.