I first reported this issue in January but I never received any kind of response.
I have two (2) music “type” libraries. One of the libraries is for standard music (MUSIC), and the second library (AUDIO) is for podcasts, audio books, etc. Because of the content type, the files in the second library tend to be a lot bigger.
I enabled “sonic analysis” on the MUSIC library. It took about a week to complete, but eventually finished and seems to be working fine.
I did NOT turn on “sonic analysis” for the AUDIO library (the option remains unchecked). However, whenever the server maintenance window takes place, I receive a notification in the activity monitor that there are “albums” in the AUDIO library that are being sonically scanned for loudness information. I can also hear the hard drives thrashing during that time. As I understand it, this library should not be getting scanned for sonic characteristics at all since I have the setting turned off. It has been almost a year now and the problem continues. There appears to be a bug where both libraries are being scanned even though only one of them is checked. I am reluctant to turn the setting off for the MUSIC library to test this theory as the feature seems useful and it took some time to complete.
FYI, I also tried turning off the Scheduled Task settings “Update all libraries during maintenance” and “Perform extensive media analysis during maintenance” but it does not help the problem.
Any kind of response would be appreciated.