you *could* forgo SATA connections entirely and run with PCIe-slot SSD devices.
What benefit will SSD offer if the main use is for media storage ?
Cost is about $1k/per Tb. But you get devices that are around 100x the speed (raw throughput and iops) of SATA3. All running at a power budget of around 20 watts/slot.
Quite the claim there, here's how i see it.
SATA - 150MB/s
SATA 2 - 300MB/s
SATA 3 - 600MB/s
Despite those specs, the real transfer speed is somewhere around 110MB/s for all of them because there's only so fast a platter can spin and be VFM. These are the speeds you can expect when mirroring to them. Burst is faster but then what does that translate into in practice ??
Presently a SSD drive will give you twice that or approx 200MB/s give a take a few.
So its a 100
% faster but only 2x as fast
All the hype about SSD is just that, not worth it at the price asked. Even the advantage offered is questionable, who cares how fast you boot up or your apps load. Do you do this all the time, nah.
The only use where it benefits is in custom apps, a HTPC would be great, that quick startup time, awesome or a kiosk type app.
For general PC use currently, SSD is extravagant, it would be ludicrous for media storage.