Best way to archive our sessions?

Hi!

Yes, but I´m looking “the most efficient” method to be future proof.

Is it necessary to do all that or can we settle for a little less? 50 to 100+ track sessions with hires audio takes a lots of space and easily one project archival will take from 10 to 40 DVD:s. I´m not using blu-rays (yet?). I´m interested how you guys archive your sessions?

-Tupi-