I have a MacMini running 10.12.3 with an internal SSD hosting 2 large iPhoto libraries. I'm going to move 1 of the libraries to a new external SSD (attached to the same MacMini).
What will Time Machine make of this?
I guess it will treat the moved library on the new external SSD as new and make a full backup? And the backup size for the original internal SSD will shrink given that 1 of the libraries is no longer there?
Reason for asking is I'm wondering whether the first TM run after this library shuffle will be much larger and so will delete a lot of old backups to make space (I've not got much spare space on the backup disk).
(It would be nice if TM recognised that it's the same bunch of files - just in different places. But that's probably asking too much!)
Thanks for any support.