Virtual hosts on a network server, carved out a certain amount of disk space for the user to place the site, application components, etc., to provide the necessary site features, data storage and transfer capabilities. The so-called virtual host, also known as the "web space", a computer running the server on the Internet is divided into multiple "virtual" servers, each virtual host has a separate domain name and complete Internet server (to support the WWW, FTP, E-mail) feature. The virtual host is the Gospel of network development, to promote the application and popularization of network technology. Rental services of the virtual host has become a new economic form of the Internet age. The rental of the virtual host is similar to the housing rented.