sir would solve all of your problems........
Not to be a gadfly here.....but if your house was on fire or experiencing a trembler (in my neck of the woods) how exactly do you plan to transport this contraption out of your house????
"Sorry honey, I gotta rescue by HP MediaSmart Home Server before I go for the kids and the cat."
MIRRORED Off site storage is what solves your data problems. That's what lets you walk out of your burning house, knowing full well that most of your data is safe in grandma's house (or work) when your house is burning down.
And if your house and grandma's house (or work) are both on fire at the same time you got bigger problem in life than your photos.