My current and only HD sits inside my tower and connects to a power supply and, of course, the mobo.
Now I am about to make a complete copy of my HD to be safe if my HD should quit. OK. No problem (yet) with that. Let's assume I've made the copy on a new HD and that my internal HD quits. So I now disconnect all connections from my tower, drag the tower out, lift it up and lug it to the kitchen where I can work on it on a counter. I take the old drive out and install the new one, bring it back, push it in to its cubbyhole or compartment in the desk, reconnect it up and away I go.
Sounds like no big deal, except it's a chunk of work and being forced to work crouched over is very uncomfortable on my back.
So I was wondering could I make use of an external HD? If yes how would they work? Could the external drive sit on my desk for easy accesibility? If so how woull I--neatly--get power wires and information-transmitting cables from my desk to the tower insides? Is the idea even practical?