Fact and not

• Over four billion Web pages, each an average of 10KB, all fully indexed
  
• Up to 2,000 PCs in a cluster
  
• Over 30 clusters
  
• 104 interface languages including Klingon and Tagalog
  
• One petabyte of data in a cluster - so much that hard disk error rates of 10-15 begin to be a real issue
  
• Sustained transfer rates of 2Gbps in a cluster
  
• An expectation that two machines will fail every day in each of the larger clusters
  
• No complete system failure since February 2000

Stanford University:
The Anatomy of a Large-Scale Hypertextual Web Search Engine
Sergey Brin and Lawrence Page

Google.com:
How Google Works

How Stuff/Google Works

The Economist:
Case History

Or

It's all done with pigeons



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internet

Labels: Internet, Search