See here, which was largely about how to architect high performance analytics platforms, and a specific shout out to our Forte NVMe flash unit, which is currently available in volume starting at $1 USD/GB.
Some of the more interesting results from our testing:
* 24GB/s bandwidth largely insensitive to block size.
* 5+ Million IOPs random IO (5+MIOPs) sensitive to block size.
* 4k random read (100%) were well north of 5M IOPs.
* 8k random read were well north of 2M IOPs.
Over a single 100Gb IB connection with our standard PFS BeeGFS running, we sustained 11.6 GB/s and 11.8 GB/s write and read bandwidth respectively.