FreeFileSync Forum

it different sync, like B backup daily, D just once a month.

I have mulit backup, so its Master file A, and backup file B\C\D.
like A→B, and sometime A→C, and sometime A→D, I notice that this will creat a databace named sync.ffs_db, and it always the same name.
What info inside "sync.ffs_db"?
like will it crash because the "sync.ffs_db" in file A will be use ...