Googlified

The size of the data shown in above table are measured before compression. They all add up to about one petabyte. Of course, the size of these data will be much smaller after compressing it. For example, Google Base’s compression ration is 31%, therefore 2 TB will become about 630 TB. You can find the compression ration for others in page 10 of the BigTable paper(PDF), or the screen shot here.

BigTable paper | via GoogleOS

Interesting read: Google reportedly had between 2 and 5 petabytes of hard-disk storage in 2003, and in a recent calculation says that Google have 4 petabytes of RAM. [Wikipedia]