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Facebook’s prototype cold storage system uses 10,000 Blu-ray discs to hold a petabyte of data

30
Jan
2014

Only a fraction of Facebooks hundreds of billions of photos are viewed regularly, while the rest languish pages deep in our profiles. Facebook has been searching for a new, more efficient way to store such pictures. Early last year, the company called for a new type of low-power flash memory that would allow infrequently-accessed data to be held in cold storage. Now Facebook has turned to another technology to store its information: Blu-ray discs.

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