User / Group administration Configuration and Maintaining system Configure Active directory Monitor system performance Create file systems Install software Create a backup and recover policy Monitor server and network communication Update system as soon as new version of OS and application software comes out Implement the policies for the use of the computer system and network Perform backup and restore Provide required server solution as per demand Windows 2003, Windows 2008, CentOs (install and configure) Create Mail solution, Web server, DNS, DHCP