3TB hard drive says full

The most important thing with backups is to know exactly what is getting backed up and what is not.

A backup program should be clear and concise with no ambiguity as to what is happening.

Personally I use a simple strategy of imaging the main disk from time to time. This captures everything in one fell swoop. And I can restore my system immediately at a moment’s notice. When I’m working with important files I’ll save two copies periodically.

The point here is to have two copies of everything. And to also know you can restore the system successfully. This means that you’ll have already tested the solution and have complete confidence it will work as intended.