A few weeks ago I had to send in my PS3 for replacement due to the disc drive failing to work. I, of course, backed up my data to an external HD. I've just now gotten around to restoring my data, but ...
I let the backup process run overnight, and when I wake up in the morning, the backup's successfully completed. Just to be sure, I turn off the PS3 and let it cool down while I eat breakfast, then ...