System requirements

This guide covers detailed system requirements for a Drupal 7 installation.


To install and run Drupal your web server must meet certain minimum requirements.

Web server

Drupal works on any web server with PHP support.

Database server

Recommended: MySQL (or an equivalent such as MariaDB or Percona Server)


Detailed information regarding the PHP requirements for Drupal 7.

What is PDO?

PDO is an acronym for PHP Data Objects. PDO is a lean, consistent way to access databases. This means developers can write portable code

Browser requirements

Websites built using just Drupal 7 core are compatible with, and fully functional, in all modern browsers that support CSS and JavaScript.

Guide maintainers