Nlbs

Network Load Balancing Services (NLBS) is a type of clustering that provides high availability and high reliability, with the addition of high scalability as well. NLBS is intended for applications with relatively small data sets that rarely change (one example would be web pages), and do not have long-running-in-memory states. These types of applications are called stateless applications, and typically include Web, File Transfer Protocol (FTP), and Virtual Private Networking (VPN) servers. Every client request to a stateless application is a separate transaction, so it is possible to distribute the requests among multiple servers to balance the load.