Originally posted by bdery 6) More long-term storage needed
This greatly depend of how much you shoot and more important what you keep.
I don't see point as an amateur to keep 20-50K pictures a year. To me by taking time to keep only the best and process them decently (at least good framing, perspective/horizon correction) you are much more likely to want to look at the picture you took a few years back. And your friend/familly are far less likely to want to commit murder if you ask them for a viewing session.
If you keep only 5000 pictures a year, and that already a lot if they are all great, With a K3 you need 12 years to fill a 2TB drive... And if you know you'll not reprocess the raw anyway, you can simply keep only the JPEG for the long run meaning that 2TB would last you a lifetime.
2TB HDD one for storage, the other for backup is maybe 250$? Maybe less. That doesn't look that bad.
Myself I am well under 5000 great pictures a year. If there 5 great photo of the same thing, I'll keep 1 or 2. Not 5. And if there 10 more soso pictures I'll delete all of them so I have only the 1-2 great picture for that moment/scene/subject.
If you are a pro you may shoot much more, but again for your own archives I don't think need more than 5000 a year. Your best. Once you have given your work to your clients there no reason to keep all the picture for a long time if it is not part of service you sell. Certainly if you keep then for a lifetime or only 10 years, that should be paid somewhere.