The other key piece I should mention is Incredibuild. We had it on the old systems, and it was ok, but didn't show a huge improvement. Now that the systems have quick random access I/O, they can keep the remote machines busy, along with local compile tasks running well. Standalone builds did also show decent improvements moving from hard drives to SSD. We went with the Intel X25-M series. While not the fastest raw read or write on the market, they are still one of the best in the 4k read and write benchmarks. The X25-E series were also tried, but we didn't see much of a noticeable boost with them compared to the M series to justify the cost increase.