Your retention policy will work for use cases 1 and 2, for 3 you need to tick the option to keep 14 versions of each file.
Note that in the third case the software will purge files according to the first triggered rule, i.e. even if you don't have 14 versions of a file old versions will still be purged based on time-based retention and vice versa.
Perfect. That's what I thought when I first configured this policy, but I was second guessing my assumption that all versions would be kept by default unless the Keep number of versions (for each file) option was specified.
James,
Here's an example:
Retention policy:
Condition A: Keep 2 versions.
Condition B: Delete after 90 days, always keep the last version.
If both conditions are checked then it will be: (A) OR (B).
In other words, if you run backup daily and files being changed, on day 3 it will start deleting the 1st version.
And in another case with the same conditions if a backup is running daily but files are haven't changed this will not be purged even after 120 or 365 days.