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[drupal=134]Haystack new storage solution for billions of photos[/drupal]

This week Facebook should have completed its new photo storage system which is designed to reduce the social network's reliance on expensive proprietary solutions from NetApp and Akamai. The new large blob storage system, named Haystack, is a custom-built file system solution for the over 850 million photos uploaded to facebook each month (500 GB per day!). Haystack stores photo data inside 10 GB bucket with 1 MB of metadata for every GB stored. Metadata is guaranteed to be memory-resident, leading to one disk seek for each photo on average.