Ubuntu server. ISO has a size of 908 MB and can be installed on the 64 Bit hardware platform. Ubuntu Server can be used by anyone who still lay from using Linux, this is because the existing documentation for Ubuntu Server is very widely on the Internet. You can use Ubuntu Server .ISO on hardware directly or using Virtual Box that you planted on your Windows operating system. To find out how to use Ubuntu, you should learn a lot through the official Ubuntu forums in ubuntuforums.org. You can download Ubuntu Server through the link below.