No back up of photos stored inside a disk image
If you you the solution "Alternatively, move the iPhoto library to a disk image" for photos how do you then ensure that time machine will backup the content of the the disk image? Time machine will not do this by default and I have not found a solution.
I have seen severel solution for that but none of them is not working well. One solution is to make a script that mount the disk image so Time Machine see is a "non removable disk". But this will prompt all user user for a administrator password. Not workable.
And this is for sharing of iphotos within the family and also on the same Mac with multiple accounts.
iMac 27"