Yes, mostly video. I feel a bit uneasy about external hard drives because of the shocks. It seems I either have to choose between slow-safe (NAS) and fast-unsafe (ext. HD). Right now I'm tending towards a 1TB NAS system with RAID 1. Because I think a head crash is more likely to happen with a sporadically used non-stationary external hard drive than with a stationary 24/7 NAS.
If you have 1TB data, shouldn't you get a 2TB NAS with RAID 1? RAID 2 would save you some space.
Not 2. RAID 5, sorry. http://www.smallnetbuilder.com/nas/nas-howto/27840-cheapfastdiyraid5nas
Don't spend money on corporate NAS bullshit. Use an old PC with enough bays to fit the hard drives you need, and install FreeNAS on it.
then buy a low powered PC...I have calculated the costs for different solutions up to 5 years (including device, media and electricity, excluding time and risk). As expected tape is the most expensive, but second is FreeNAS. Third are several ready-made NAS solutions and RDX, and the cheapest is Bluray.
FreeNAS is expensive mainly because of the electricity. The break-even of a selfmade NAS vs. corporate NAS happens after 3 years. Some of those corporate NAS have an idle power consumption of 5W!
then buy a low powered PC...
Well be sure to calculate how much the electricity will cost over 25 years to see if it's worth it. You know, just in case you feel like rejecting my answer again. You could buy an ARM-based computer, but then you'd have to boost it up to 50 years.Then I could as well buy a corporate NAS