When you go to the eBay site, you are automatically routed to one of four eBay data centers. eBay operates four data centers to ensure the site will always be up and runningif one data center goes down, three others are still available. Two data centers are located in Santa Clara, California; one is in Sacramento, California; and one is located in Denver, Colorado. The data centers are mirrors of one another, so no matter which data center you connect to, you get the same information, auctions, and functions. The centers are connected to one another via a high-speed Synchronous Optical Network (SONET).