I have a Local Sync Store that syncs 4 files, though I have synced a couple more sometimes. The dtcloud file is about the same size as the combined dtbase2 files, over 40gb. So, I’m curious, what Is in there and is there some other method of syncing that requires less overhead?
Syncing is not a backup. If you have errors in your database that need recovery, those errors are propagated across the sync and so what you may want to recover will not be there.
Proper backup of your machine(s) is essential. Much guidance on how to setup backups (and test recovery, which is more important) can be found on this forum and elsewhere. I’ll not repeat all that to keep things simple.
Re setting up sync, rather than re-state everything again, just re-read and follow the instructions in the DEVONthink Handbook.