Using 1786 four core nodes to host GFS
500 nodes also act as table servers
500 nodes also act as clients
500 GB table
random 1kB reads 120 MB/s total
sequential 1kB reads 1235 MB/s total
random 1kB writes 1000 MB/s total
Google Crawler, 800 TB table, 1 trillion cells
Google Earth, 70 TB table, 9 billion cells