How to be sure all albums have been scanned?

I did a complete scan of Music folder in my NAS.
I heard that sometimes some folders are not scanned. How can I be sure that all Artist/Albums have been scanned? We are talking thousands of each…

I compare the number of tracks scanned and the number in the scanned folder.

To do this I am using Mp3Tag (used for my tagging) and compare that number with the scanned tracks in roon.

Use a file manager to find all music files in the nas path and tell you how many it identified. Then check those stats against Roon’s.

Thanks for all replies