Cost to Store All US Phonecalls Made in a Year so it Could be Datamined
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Cost to Store All US Phonecalls Made in a Year in Cloud Storage so it could be Datamined
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estimates by Brewster Kahle June 12, 2013, done to check feasibility of news reports of NSA survaillance
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corrections welcome: brewster@archive.org
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number of call-minutes per person per month300minutes (estimate from my family's usage)
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sides in a phonecall (caller+receiver)2since most calls are domestic, only need to record a call once for each reciever/caller pair
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number of people in the US315,000,000https://www.census.gov/
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number of bytes/sec in a phonecall8,000this is the uncompressed number, could be compressed to 1/2 to 1/4 easily
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cost of a Petabyte (PB) of "cloud" storage$100,000this is basically what the Internet Archive pays. Petabyte = 1,000 terabytes
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Square feet of datacenter space per petabyte162 feet wide by about 8 feet including corridor between racks
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Power to run a PB5kilowatts
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Cost per KWhr$0.15California costs (higher than much of the country, could be 1/2 in other places)
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number of bytes/min in a phonecall480,000calculated from above
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number of bytes/month for a person144,000,000calculated from above
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number of bytes/month for the US22,680,000,000,000,000calculated (divided by 2 because there is a caller and reciever, don’t need to double count)
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number of PB/month for the US23calculated
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number of PB/year for the US272calculated
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Cost to store all phonecalls made in a year in the "cloud"$27,216,000
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Square feet to store all phonecalls4,355
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Cost of datacenter power for all phonecalls for a year$1,788,091
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