Q I back my MacBook up to Dropbox, but some things don’t work well there, like Photos libraries. How can I fix those?
by STEVE CLOSE
A To make a faithful backup, as Time Machine and other backup apps do, the disk that you’re storing your backups on needs to support all the features used in the original files. Few cloud services provide those, and Dropbox has limitations which make it unsuitable for storage of Photos libraries which can break their backups.