Web applications require a lot of data storage. All the videos uploaded to YouTube, for example, are estimated to take up more than 500 terabytes of storage. Google’s servers overall process one petabyte of data every hour or so. Google had to create its own Web-scale file system to handle all the data that it processes and stores. As Web-scale computing and the needs of plain-old enterprise storage grow, many more companies are wishing they had a file system like Google’s.