Recently, jjs posted:

"Bob Salomon" wrote in message
...

Then just how do you maintain cold dark storage at a constant
humidity?

Sealed containers containing adequately dried air before sealing,
stored in a cool place is all that's neccessary to outlast current
digital media. No electricity required.

You don't even have to go that far to outlast current digital media.

Archiving of any physical object is a challenge, as entropy is a constant.
But, beyond the physical degradation that will affect digital media as
well as film, you have many other factors. Obsolescence of the media,
obsolescence of the media's format (8" floppies are less than 30 years
old), and obsolescence of the data format also work against reliable
archiving with digital media.

Neil