Public torrents and dedicated preservation sites are the most common sources. Look for:
Here’s a draft for a blog post about accessing a PS2 Redump archive link. I’ve kept it informative and cautionary about file integrity and legal use. ps2 redump archive link
: These sets include both the "System Data" and the "Subchannel Data," which are often required for perfect emulation and hardware compatibility. Public torrents and dedicated preservation sites are the
PS2 USA Redump sets with lossless CHD compression. 0-9 - https://archive.org/details/ps2-redump-usa-chd-part-0. Internet Archive PS2 USA Redump Set (CHD) Main Directory - NTSC-U Internet Archive A-Z Indexed Parts PS2 Japan/Asia Redump Set Japan Directory Part 2 Safety and Legality : These sets include both the "System Data"
Redump.org is a disc preservation project. Unlike standard "rips" you might find on random sites, a Redump-verified file is a 1:1 copy of the original retail disc.