Общие вопросы о панели управления Vesta
Installer categorizes servers into 4 groups. Micro - less than 1Gb of RAM. Small - less than 3Gb of RAM. Medium - less than 7Gb of RAM. Large - more than 7Gb of RAM. Antispam and Antivirus packages are only installed on a medium and large servers. Micro server also do not support phpfcgi template. However, you can install missing software manually. See corresponding articles for details.