I have a dedicated SSD in my Workstation purely for projects, samples and recordings (and another SSD dedicated to plugins and Kontakt Libraries) and I keep them organised by year. When I go through projects, I make sure I save the following assets for future use:
- MIDI Scores of interesting/Usuable Notation in a dedicated location.
- All recordings dedicated to projects are archived in a dedicated location.
- WAV Stem exports on my newer projects for future sampling in a dedicated holding folder.
Its quite useful as it means I can clone & drive swap if my Project SSD ever dies and gets replaced and have no weird conflicting issues on older projects and I have an organised central location where I can pull old assets into new projects without having to browse through a jungle of folders. Just means that old projects will never be fully abandoned, but recycled for the greater good. I've got a couple of projects going on at the moment where I've used MIDI Scores from old 2012 projects which I never finished and put their best assets to good use.
Also doesn't hurt to have a powershell script to backup the entire partition to an archive drive once a week