How decoupled is decoupled enough though? Does it need to be air-gapped? You could access your dropbox data from computer B even while it is syncing files from

How decoupled is decoupled enough though? Does it need to be air-gapped? You could access your dropbox data from computer B even while it is syncing files from computer A. Together with the 30 day file recovery window, this seems fairly decoupled to me. Assuming that the dropbox file history and the dropbox normal sync is seen as two separate systems. Now you shouldn't have this as your only backup, but combine it with a second service with similar guarantees and even if you wipe your local drive and the wipe get propagated to dropbox, you are still backed by the 30 day history inside both dropbox and the second service, which are decoupled from each other.