connected the my book to my pc then checked it with the wd utility:
smart - ok
short test - ok
sleep was set to on. turned it off. then reconnected to my cloud, set the auto update schedule to run overnight.
this morning - nothing updated on the my book.
forced a manual safepoint update and that worked.
so something is not right with the auto-update setting.
neither of these drives is set to sleep they are always spinning.
i might consider trying your suggestion for rsync but i want to make sure the lines are written correctly, perhaps i can get some help ? specifically i want to make sure the paths are correct.