A network that is dedicated to handling Storage functions is called a Storage Area Network (SAN). A SAN performs the same function as DAS or SAN devices do, it makes data storage available to users. These devices may be disk arrays or Tape Libraries, the very same type of devices that exist in DAS or NAS deployments. DAS and NAS strategies are effective at delivering storage to users but as the quantity and locations of data grows, the man hours and network traffic used to support it become unwieldy. A SAN is a flexible, intelligent, and easy-to-manage storage solution that allows you to give structure and efficiency to your data availability while reducing operational expense.