Many many disk drives

At this rate, I'll be very very old before I run out of space.
These Google guys gotta have a RAID farm the size of Arkanasa somewhere.
I'd hate to see their electric bill...

If they set up an account for every person on the planet (and they well might have already), that'd be 3072 billion megabytes. Don't know that there's a word for that yet.
Biggabytes?
Alldabytes?
Manybytes?
A terabyte is way too small (terabyte = 1,099,511,627,776 bytes, or approximately one trillion bytes. A terabyte is equivalent to 1,000 gigabytes or 1,000,000 megabytes), but how about a Terrabyte, meaning a whole Earth's worth?