My laptop HD can take a non-operational shock of 800G. What exactly would constitute 800G? A drop on the floor from 3 feet up? What does 800G equate to in real world terms?
it means if your drive isnt spinning, you have more than a snowball's chance in hell of your drive working if you drop it.
assuming its turned off and it falls off the couch onto carpet it will probably work, or even off a table onto a hardwood floor it would probably be ok depending on how it lands. I wouldnt take it outside and play frisbee with it on cement though. Calculating G forces depends on how far something falls, and what it hits. The G force is this case is the jolt it takes as it impacts the surface it is hitting.
I have a toshi 5400rpm 60GB drive in my notebook. It's pretty speedy, got the 16MB cache, but I might be upgrading to a 7,200 RPM all the same. If I do I might use my current drive as an external drive, so its useful to know how much shock it will take when I'm travelling with it. I think 800 G's constitutes a pretty hard shock and it'll be able to take the gentle, and a few hard, bumps of travel. Even so, maybe an extended warranty is in order.