Data centre energy use
Upcoming SlideShare
Loading in...5
×
 

Data centre energy use

on

  • 1,961 views

A summary of James Glanz's NYT article on the environmental footprint of cloud computing.

A summary of James Glanz's NYT article on the environmental footprint of cloud computing.

Statistics

Views

Total Views
1,961
Views on SlideShare
731
Embed Views
1,230

Actions

Likes
0
Downloads
8
Comments
0

1 Embed 1,230

http://memex.naughtons.org 1230

Accessibility

Categories

Upload Details

Uploaded via as Apple Keynote

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n

Data centre energy use Data centre energy use Presentation Transcript

  • Cloud computing is...
  • ...a huge phenomenon• More than 3 million data centers of widely varying sizes worldwide (IDC)• US government datacentres - up from 432 in 1998 to 2,094 in 2010
  • ... driven by• Massive expansion in data• 1.8 trillion gigabytes of digital information created globally last year• 75% of that generated by individuals, not corporations• But corporate use also huge -- e.g. NYSE generates 2,000 GB/day, which has to be stored for years
  • ... power-hungry• In US, cloud computing used 76 billion kilowatt-hours of electricity in 2010• That’s ~ 2 percent of all electricity used in the US that year (Jonathan Koomey, Stanford)• Compare with paper industry, which took 67 billion kilowatt-hours from the grid in 2010
  • (just for comparison)• One data-centre = one medium-sized town• Google consumes 300 megawatts (MW)• Facebook 60m MW
  • ... very inefficient• Typically data-centres only use 6-12% of energy for actual computation • In one sample of 333 servers monitored in 2010, >50% were found to be comatose (i.e. not doing any computation) • Nearly 75% of servers in the sample were using less than 10 percent of their computational power
  • ... wasteful• Low utilization rates mean that the energy wasted is as much as 30 times the amount of electricity used to carry out the basic purpose of the data centre• Most of the energy goes on keeping idle machines running, and cooling them down
  • ... polluting• Data-centres use (diesel generators for backup• These often violate air pollution regulations • (~ 12 data-centres in Virginia and Illinois fined in one year)
  • ... badly managed• Most run at max capacity 24x7x365 • (because of fear of downtime)• Waste 90% of the energy they pull off the grid
  • ... in a word, nuts• On both financial and environmental grounds.
  • Based on James Glanz’s NYT article:http://www.nytimes.com/2012/09/23/technology/data-centers-waste-vast-amounts-of-energy-belying-industry-image.html
  • John Naughton memex.naughtons.org