Another thought:
Fanless drives do not necessarily mean a loss of data:
The last external drive I bought (about 18 months ago) was a 6 TB FW8/USB (2 drives) set to run in in RAID-1 mirror mode of 3 TB capacity so if one drive fails, it can be replaced without any loss of data. This one was a WD My Book II. It's supposedly easy to change the drives or so I read. The drive's software keeps you aware of if the drives are working properly. The entire back & top of the casing has air slots. Note that Win XP does not support drives larger than 2 TB, but they had a 4 TB model equivalent.
I only use mine for backup & longest connected time about 10 hours, no issue with heating.

I'm not up to date on the latest media setups & storage devices. I don't even have a digital TV yet lol (our city only stopped transmiting analogue as an alternative March last year.) I use a digital set-top box, which does have ability for playing media via a USB HDD (ie: apparently has built-in audio & video codecs.) I haven't tested that option out yet (I rarely watch TV these days.)