PS3 now supports PS2 HDD content | PS3Blog.net
If you had any map packs from the likes of SOCOM, or played Final Fantasy XI and want to play them on your PS3 then you are in luck!
A download from the PlayStation Store now allots a folder on your HDD to space for PS2 game data. Simply go to the store, download and install. It isn’t the biggest of Sony’s Backwards compatibility issues with so few PS2 games utilising the HDD, but small steps like this show that a steady rate of progress is occurring.