What CPU for low power NAS

[LurchFrinky]

Any thoughts on using a PicoPSU for a system like this?

http://www.logicsupply.com/products/picopsu_160

I guess it may be ugly daisy-chaining all the hard drives together onto a PicoPSU even if it has enough current to support them all. I've seen some forum comments on other forums saying these are more efficient than 250+ Watt PSUs when you are running a sub-100W computer.

I suppose you shift your efficiency requirement to the power "brick" for a PicoPSU. I wonder what the efficiency is for a Dell laptop power brick.

I happen to love PicoPSUs and have them in my desktop and NAS. But the reason I like them is because I have custom cases and keeping the heat of the power brick outside means slower, quieter fans (actually, my NAS is fanless). They do cost a little more, but they only save you a couple of Watts and it likely won't be worth it.

And maybe your idea of daisy chaining is different than mine, but I thought it was desirable.
This is what I was thinking: