Ref: PS3News [here]
Ever wonder if and when Blue Ray game .iso’s would be ready in the future, if you could store them on your new PS3 HDD. Well it has been done (the huge HDD that is), and working 100%. Gonna cost you a few bucks for the drive, but here’s a good one from Newegg ($379); the drive cable is cheap, tho…
What you’ll need are 2 items:
SATA HDD (One mentioned below that I found)
Seagate Barracuda 7200.10 750GB, SATA II NCQ, 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive
Interface: SATA 3.0Gb/s
RPM: 7200 RPM
And the other item needed:
Sata Male>Female extension ($14.99)
22 pin male to female power and data SATA adapter custom cable. [CUS22MF12]
22 pin male to female SATA adapter, custom cable 12″.
Great for backplane adapter.
Great for an extension.
Pin 1 to Pin 1
Data cable may come in blue or red
1) Open bay cover
2) Connect male end of extension cable to your ps3 internally.
3) Connect female end of extension cable to your hard drive
4) Boot ps3 and format drive from XMB.
22 Pin SATA Adapter Cable