I'm a sucker for huge numbers, and Facebook's engineering team has shared a pretty interesting data point: Facebook users have now uploaded more than 10 billion photos. More than 300,000 images are served every second.
Facebook's 10 billion images easily outdistances the largest photo-sharing sites. Photobucket hosts about 6.2 billion photos, while Flickr has 2 billion, according to CNet.
So Facebook users upload a ton of photos. What's the significance? Those photos have to live somewhere. Facebook now has more than 1 petabyte of photo storage, and at least 2 terabytes of photos are uploaded every day. That will drive demand for more servers and more data center space.