Wednesday, July 8, 2009

Weight Of 1 Petabyte

A petabyte is 1024 gigabytes or 1,125,899,906,842,624 bytes. There was a Slashdot story about how much one would weigh. So I looked up the weights of all the candidates I could think of, and made a chart:

Type Size Bytes Size GB Weight Grams Model Number Total Grams Total lbs
MicroSD 17,179,869,184 16 0.27
58207.66 15716.07 34.65
SD 34,359,738,368 32 2
29103.83 58207.66 128.33
CF 34,359,738,368 32 3.3
29103.83 96042.64 211.74
2.5 HDD 500,000,000,000 466 98.8 ST9500325AS 2000 197600 435.63
MiniSD 4,294,967,296 4 1
232830.64 232830.64 513.3
1.8 HDD 250,000,000,000 233 62 MK2529GSG 4000 248000 546.75
Tape 800,000,000,000 745 210
1250 262500 578.71
Blu-Ray 50,050,629,632 47 16
19979.77 319676.3 704.77
3.5 HDD 2,000,000,000,000 1,863 655 ST32000542AS 500 327500 722.01
DVD 18,253,611,008 17 16
54783.68 876538.89 1932.44
CD 736,279,247 0.7
15
1358180.34 20372705.14 44914.13


Some notes, I went with the highest capacity version I could find. So for MicroSD it was 16GB, DVD was Dual side and layer, Blu-Ray was dual layer, tape 800GB. Also it was quite hard to find accurate weights for the flash memory. I weighed 2 SD cards and they seemed to be just under 2g each. I weighed a variety of CDs and DVDs and they ranged from 15-17g.

http://hardware.slashdot.org/story/09/07/08/2159259/How-Heavy-Is-a-Petabyte?from=rss

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