CDs and DVDs are not permanent storage. Over time, the reflective layer inside the disc can oxidize, leading to "disc rot," making the game unreadable.
Use the chdman command-line tool or a GUI frontend like NamDHC to batch-convert your BIN/CUE folders into single CHD files. This saves massive amounts of hard drive space. archive ps1 roms
The archive is organized into several major types of content, ranging from raw disc dumps to compressed formats optimized for modern emulators: Archive.org Information CDs and DVDs are not permanent storage