If your users are uploading 40 million photos a day, what does your data center look like? A new video seeking to recuit engineers for Facebook provides a glimpse of one of the social network's data center facilities, along with some facts about the social network's amazing growth. The company's data centers store more than 40 billion photos, and users upload 40 million new photos each day - about 2,000 photos every second. Not surprisingly, the racks are packed. The facility is using a raised-floor design, with no containment but generous spacing between racks. Here's the video, which runs about 2 minutes, 30 seconds.

For more about Facebook's data centers, check out some of our previous coverage:

If you're interested in opportunities for engineers at Facebook, see their careers page.