Delta Drive, Delta Trust & My Drive · Linked folders and copies
What's the difference between online only, offline only and both in sync for a linked folder?
Short answer: Online only keeps files in Delta Drive and frees your Mac; offline only keeps them on your Mac and never uploads them; both in sync keeps a full copy in each place, using the space twice.
They decide where the files live:
- Available online only — the files live in Delta Drive. Your Mac keeps only what it needs to list them, so they take no space here and open from any browser.
- Available offline only — the files stay on your Mac and are never uploaded. Delta Drive learns their names, sizes and dates so you can see what's there from anywhere; the contents are reachable only while that Mac is on.
- Both, in sync — a full copy in both places, kept up to date. Uses the space twice, and survives either one going away.
Change it from the folder's right-click menu (Keep it), the background menu (Keep this folder) or the Copies screen (How it's kept). See linking a folder.