Are there any prospects for the ROCK build to include support for Intel Optane M.2 devices as the primary boot drive? These are due to become available April 24, and Intel’s 3D XPoint boasts outstanding random R/W access for nonvolatile memory. While the initial m.2 devices will only be available in 16GB or 32GB capacities, that might be more than sufficient for a lightweight build like ROCK and can likely accommodate all but the largest libraries (<200k tracks?). While expensive per GB, the 16GB and 32B devices will retail for only $44 and $77 respectively, which is still significantly cheaper than the smallest available 250GB Samsung 960 EVO NVME m.2 SSD ($130, and would be 90% empty).
Of course, Intel is targeting this form of memory as nonvolatile cache for spinning HDDs, and Windows 10 does not allow Optane primary standalone drives (yet?). I don’t know what kind of support there is or may be for Optane primary storage in linux. However, if such an implementation is possible, this might be the most ideal configuration for maximum performance with ROCK.