A versioned repository, not a shared drive
Every document in DocumentMS is a record with a history rather than a file with a name. Uploading a revision creates a new version and leaves the previous one intact and retrievable, so "final_v3_revised_FINAL.docx" stops being a filing convention. The current version is marked unambiguously; superseded versions remain readable but are clearly labelled as superseded, which is the distinction quality and safety auditors test for.
Version history is unlimited. That sounds like a storage decision, but it is really a legal one: once you start pruning history you have to be able to justify what was pruned and when, and the cost of keeping it is almost always lower than the cost of explaining its absence.
