whats known and unknown

Backblaze stores 75 petabytes on 25,000 drives, and most are still spinning

on November 12, 2013


Cloud backup provider is fast becoming one of my favorite companies in IT, if only because it shares so much information about its operations. On Tuesday, the company — famous for its open source storage-pod designs and infamous for getting blacklisted from stores including Best Buy and Costco during the 2010 hard drive shortage — released a new set of data regarding the lifespan of the hard drives on which its service runs.

Backblaze Distinguished Engineer Brian Beach provides a lot of detail in a blog post about the study, but here are the highlights:

  • The company is storing 75 petabytes of customer data on more than 25,000 consumer-grade hard drives.
  • It has been in business for 5 years and 74 percent of the hard drives it has ever deployed are still running.
  • Annual failure rate for drives is 5.1 percent for the first 18 months, 1.4 percent for…

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