[AaronFriel]

I'll start with what I know firsthand: those interposers are not supported for many technologies, including Windows Server Clustered Storage Spaces. This is straight from DataOn storage reps.

And what I know second-hand: many SATA SSDs have terrible failure modes in the form of RESET storms when behind an interposer. That is, you can end up in a situation where you have to shut down all hosts attached to the SSDs and power them off before they return to life. Not a good situation. The interposers apparently greatly exacerbate this problem.

I will check out your link on networking, thank you :)