Why stop there Merv!!
Terabyte
1,099,511,627,776 or 240;
approx. 1,000,000,000,000 or 1012
Petabyte
1,125,899,906,842,624 bytes or 250
approx. 1,000,000,000,000,000 or 1015
1 Petabyte: 3 years of EOS data (2001)
2 Petabytes: All U. S. academic research libraries
20 Petabytes: 1995 production of hard-disk drives
200 Petabytes: All printed material; 1995 production of digital magnetic tape
Exabyte
1,152,921,504,606,846,976 bytes or 260
approx. 1,000,000,000,000,000,000 or 1018
5 Exabytes: All words ever spoken by human beings.
Zettabyte
1,180,591,620,717,411,303,424 bytes or 270
approx. 1,000,000,000,000,000,000,000 or 1021
Yottabyte
1,208,925,819,614,629,174,706,176 bytes or 280
approx. 1,000,000,000,000,000,000,000,000 or 1024