In my case, I'm archiving all as 7z files through the process of ISO > extract > 7z (high level compression) and I'm saving a HUGE quantity of gigs in my backup HDD, so for the way to storing all these ISOs, compressed extracted games is my choice. My question is (as I didn't tested), is OK to re-convert to ISO my extracted library in case I need it because the game doesn't works or because the cluster size is not optimal for a particular game?
The reason I'm archiving all as extracted&compressed is the attached screenshot down below, from left to right:
Extracted size (GBs expected on XBOX HDD - without counting actual disk size caused by cluster)
7z size (7z preset 9 with some adjustments)
Original Zip size for the redump file
% of space gainance Extracted vs OG Zipped ISO
% of space gainance 7Z vs OG Zipped ISO
% of space gainance 7Z vs Extracted