This is admittedly a terribly newbie question, and I'm not a professional sysadmin. I have however recently been considering a OS X Server based network setup for a small lab (OS X Server because I'd likely be press-ganged into adminstering the thing and its by far what I'm most familiar with).
The new ThunderBolt port on the Mac Mini server (and I suspect the Mac Pro server if/when Apple gets around to updating it) seems pretty speedy, and there's at least two lines of RAID setups being introduced using the interface. Both both are pretty conspicuously desktop/workstation targeted setups, and both companies (Sonnet and whoever makes the Pegasus line) don't have rack mount ThunderBolt setups, but do have ways to hook a Thunderbolt based machine into a FibreChannel or SATA-based setup using some sort of adapter.
Is that likely just that the market for a purely ThunderBolt server storage solution is probably pretty damned small and its easier to just make an adapter of some sort, or is there something about the interface that makes it unsuitable for the task at hand?