Server Hardware ,Software and Architecture

A server is a very important element in the network. It is required to be up and running 24 hours during the seven days of the week. A server must be working and serving its users all the time. Server's software, hardware and applications are sensitive and costly. There are many new technologies in the Information Technology market. This study will specify the important keys to choose an optimal server by selecting proper hardware, software and applications specifications. Also, it will introduce the server high availability principles and how to select a server with high availability. The case study example is PetrodarDar Operating Company (PDOC). It upgraded its web and mail systems with new servers. The study concentrates on the determination and selection of specifications, installation and configurations for the servers. The performance and availability of the new servers were monitored and compared with the old ones. Finally there are many guidelines; by which the optimal server can be selected and the required availability can be achieved