U.P.B. Sci. Bull., Series C, Vol. 76, Iss. 2, 2014 ISSN 2286 – 3540 THE VIRTUALIZATION OF AN INTERNET SERVER Cătălin MATEIAŞ 1 , Adrian NICOLESCU 2 For security reasons, the software used for building an Internet Server is not installed on a single computer, instead it is usually scattered on three or more computers. This paper presents how three computers have been replaced with virtual machines installed on a single server and how the data is transferred among the virtual machines and the hardware network, and the advantages and drawbacks of virtual machines versus hardware machines. Keywords: virtualization, internet web server, database, communications 1. Introduction The authors of the paper are working on developing a software platform using open source software, which will record data from sensors installed in locations that require constant monitoring, and make the data accessible to users using the Internet. Locations that require constant monitoring are greenhouses, food warehouses, pharmacy storages, metrological laboratories, server rooms or any other locations that require constant monitoring [1]. The software application will store data like temperature, humidity, pressure, light intensity, air flow or any other measurable digtized elements [2]. The data will be available to users using web pages showing data in reports and graphs. Each user will be allowed to see only data from the sensors installed in the locations that he owns. For example in figure 1 the user (5) will see only data from the greenhouses (1) and (2) while the user (6) will see only data from the greenhouse (3). This research was started as a substage for the development of a fully automatic system for a mushroom cultivation greenhouse, because commercial 1 PhD student., University POLITEHNICA of Bucharest, Romania, e-mail: cata.mateias@gmail.com 2 Prof., University POLITEHNICA of Bucharest, Romania