A 14TB (10TB via raid 6) media server (what I estimate I would need given about 200 BD/HD DVDs + 200 DVDs) is about $1800.
You mean ten 2TB disks in RAID6? That would be 16TB unless you also run a hot spare...
I could never pull the plug on one big RAD setup for home media. It ain't cheap: case, motherboard, disks. And it's not quiet.
I use separate external drives, some of them with 2 mirrored drives...
Do you plan to rip all media as-is? With menus and extras?
If you are willing to re-encode and just movie+soundtrack, you can get away with about half the storage and most likely won't see the difference...
Diogen.