The comment I was replying to made it sound like this was insurance purely for recorded footage being destroyed, and not it being leaked. The former is very easy to fix by having everyone's workstations keep a copy of what they're working on[0]. But the more copies you have, the easier it is for the footage to leak. The two risks impose different and conflicting mitigation measures.
[0] Remember that one time Pixar rm -rf'd their server and almost lost Toy Story 2 but for one manager who had a local copy of the project at home?
[0] Remember that one time Pixar rm -rf'd their server and almost lost Toy Story 2 but for one manager who had a local copy of the project at home?