Sync to NAS does not respect change in title case

[ron_jeremy]

I've tried multiple folder sync apps (FreeFileSync, Synkron, etc.) to mirror the 'Music' folder on my Mac (macOS Big Sur) to my QNAP NAS. This is a one-way mirror: Mac to NAS.

I noticed that if I change the title case of a song on the Mac that it does not change the title on the NAS if the file already exists.

For example, the current file structure is as follows:
Mac: User/Music/Artist/Album/this is the song title.mp3
NAS: User/Music/Artist/Album/this is the song title.mp3

If I capitalize the song file name on my Mac (User/Music/Song Folder/This Is The Song Title.mp3) and perform another synchronization task, the folder sync apps all report that there's nothing to sync. Even if I force a sync the change in title case is not transferred to the files on the NAS.

Any ideas on how to make sure any changes in title case are sync'd to the NAS?

The only way to get around this that I know of is to delete the files on the NAS and perform a fresh sync.

[therube]

I'm seeing the same - outside of FFS, copying from Windows to Synology NAS.

I create a file on the NAS, xxx.txt.
I then copy a file from Windows, XXX.TXT, overwriting the copy on the NAS.
NAS still displays the file name in all lower case.

Perhaps the answer lies here, Case (in)sensitivity issues on a NAS connected to from both Linux and Windows machines.

[ron_jeremy]

Hi @therube thx for the input. The linked page is way over my head. I'm wondering if the problem one of two things:

1. My Mac. When you format a disk during a fresh install of macOS the default filesystem is case insensitive. I wonder if this problem is fixed if I had chosen case sensitive?
2. SMB. I'm connecting to the NAS via SMB. Maybe I should be using something else?