I also posted the question on AskDifferent, but I wanted to tap into the collected knowledge here as well.
I am using an old Cheese Grater as a server at home, and would like to backup the iCloud photo libraries from my wife, my daughter and myself onto that server.
At the moment, I have to login all accounts, plus the one which is running Plex. This is annoying, and I have to do it manually after rebooting.
Is it possible to sync photos from the iCloud library to a Mac while not being logged in that Mac?
Thanks @bowline. These articles are interesting, but they do not really answer my question HOW I can make backups of my iCloud Photo Library from multiple users, apart from having all users being logged in (and yes, the photo libraries from the Mac server are backed up to Backblaze).
But a script which runs when the user for the plex server is logged in automatically, which logs the other users in, would make it even easier. But I’ll post an additional question for that.