here what i did -
bought wd 1tb black hdd 3.5"
enclosure for the hdd
m-f sata cable
so i have a m-f sata cable plugged into the ps3 and then into the hdd in the case and the case powers the drive, when the ps3 turns on the hdd powers up and when the ps3 turns off, so does the hdd.
best thing i ever did, no need to rip apart my ps3 or mod and caddy things. and if later down the track the ps3 can support 2tb then i can just switch it easily.
if anyone want pics i can post them.
LOL --- http://www.youtube.com/watch?v=3AzpByR3MvI