Git and GitFlow
For us, version management for all design files is performed under the Git framework with Git-Flow as the workflow model and SourceTree as the software tool. Remote repositories (i.e., origin) are located on github.
Rock-Solid Backup Strategy
Losing a few weeks of files after the hard-drive on my MacBook Pro (MBP) failed during power-up, I realized my backup strategy just wasn't good enough. I needed a rock-solid backup strategy.