I've been really pining for a proper NAS for a good while now. I have a few terabytes of drives in my desktop, and a 1TB eSata backup drive for those, and a couple of USB drives, 250, 400, but a proper, big NAS would be great. I'll likely just get a couple of those cheap Buffalo 1TB drives for now. I have this idea that I have some 30-40 homemade DVD's with family videos and 8mm's from since the 60's, and I want to put them all on HD instead, and I'd likely want to have that HD backed up anyway, and I could also use the same drive to storage those films and such I may want to watch again some day.
But it's so diffcult to arrange everything, I'd need to change so much of my home stuff.
I've been thinking by far the easiest and cheapest solution is when I need to upgrade my home networking, and probably my desktop PC at about the same time then...I think what I'll do is I'll build a simple, underclocked and fan-free PC and put it in my electric closet in a box. I will run gigabyte ethernet from it to my TV player and my desktop and a WLAN for other devices.
Then I can just buy a bunch of HD's as big as they come and a hardware RAID card, put them in a RAID 10 formation, and then I can have all the benefits of a NAS with added helpful things, like I can run a Zune etc. video server and access stuff via my Xbox and TV box directly from the server, and need no USB drives for the video player, etc. etc. and there will likely be enough space there to backup my desktop too.
But, we'll see...maybe I'm too lazy to build it.