Table 1: Worldwide production of original content, stored digitally using standard compression methods, in terabytes circa 1999. | ||||
Storage Medium |
Type of Content |
Terabytes/Year, Upper Estimate |
Terabytes/Year, Lower Estimate |
Growth Rate, % |
Paper | Books | 8 | 1 | 2 |
Newspapers | 25 | 2 | -2 | |
Periodicals | 12 | 1 | 2 | |
Office documents | 195 | 19 | 2 | |
Subtotal: | 240 | 23 | 2 | |
Film | Photographs | 410,000 | 41,000 | 5 |
Cinema | 16 | 16 | 3 | |
X-Rays | 17,200 | 17,200 | 2 | |
Subtotal: | 427,216 | 58,216 | 4 | |
Optical | Music CDs | 58 | 6 | 3 |
Data CDs | 3 | 3 | 2 | |
DVDs | 22 | 22 | 100 | |
Subtotal: | 83 | 31 | 70 | |
Magnetic | Camcorder Tape | 300,000 | 300,000 | 5 |
PC Disk Drives | 766,000 | 7,660 | 100 | |
Departmental Servers | 460,000 | 161,000 | 100 | |
Enterprise Servers | 167,000 | 108,550 | 100 | |
Subtotal: | 1,693,000 | 577,210 | 55 | |
TOTAL: | 2,120,539 | 635,480 | 50 |