The key is to
always keep
a bit ahead of the problem rather than waiting until
the problems such as NASA has with old tapes that
can no longer be read with tape drives that rarely
work in any case.
This is a myth. Every bit of every mission is available on CD-ROM. The
original telemetry tapes are crap, but the data was pulled off them many
years ago.
I thought the problem was they got the data ... but lost the software to
read the encoded
data from the tapes ... I think this was mars lander data.
Ben alias woodelf