there is a caveat however
server-local and remote backup/restore have different idea waht is success and what is error
one of them would report success, if backup/restore has ended with error, but the log/data of it was transferred without error
given that .FBK is not guaranteed to be restorable (the reverse side of FB flexibility, providing for shceme change with live data) - it is sugegsted to always do a test restore after backup. So testing for errors in the procss becomes needed.