Multi-site installation

Setting up a multi-site for Drupal can be beneficial in several ways. Multiple Drupal sites are sharing the same codebase. This makes updating Drupal modules simpler since you only need to do it once for all the sites in the multi-site installation. Each site has its own database, theme and unique modules. Here is a tutorial on how I set up a multi-site installation for Drupal 6. The procedure is much the same for Drupal 7. I’m using a managed VPS with LAMP stack, cPanel and WHM. (Web Hosting Manager) Also: CentOs 4.7/Apache 2.x/mySQL 5.0/PHP 5.2
 
Resource: http://drupal.org/node/348619