This is one the fans having been asking us about demanding for a bit. Black Ops 2 has an option to "Install Textures to HDD."
When we explained to PS3 folks that installing to the HDD wouldn't neccessarily give us any significant performance gains, they explained back that the issue is they play so much it puts constant stress on the Blu-ray drive and wears them out.
It's a non-trivial amount of HDD space to install all the textures. I don't want to get into exactly numbers because anything can, and does change during development.
You don't have to install to enjoy the game. We still pre-cache like we did on Black Ops.
David 'Vahn' Vonderhaar
black ops killed my blue ray drive, was playing kino my drive was going faster than an assault rifle then it froze, i rebooted it now it don't read disks anymore.....
But i feel this will smooth out relations with the ps3 users and devs, now to work on dlc release schedules.