In 2021, the 7z file format served a critical but secondary role in the Dolphin emulator ecosystem. While Dolphin did not—and still does not—support direct 7z loading, the format’s unmatched compression and integrity features made it indispensable for long-term storage and sharing of game dumps. Users were advised to maintain 7z archives as master backups and convert extracted images to RVZ for daily use. As storage costs continued to fall and broadband speeds increased, the friction of extraction became acceptable for archival-grade preservation.