I’ve seen numerous instructions on how to setup a Fusion Drive from your own SSD and HD, e.g. Can I make a DIY Fusion Drive?
Very silly question: How would a Fusion Drive built from an SSD and a Hybriddrive (take the Seagate Momentus XT 750 GB with built-in 8 GB SSD) compare to an SSD with a standard HDD when it comes to performance/power consumption/idle behavior?
Has anyone done this? Does this make any sense at all or is the "cascaded caching" (if one can call it that way) counterproductive?