Our company site is hosted from a VPS server in Dreamhost. The site is created in Drupal and loaded with a number of Drupal modules. It has a huge page views and unique visitors , although it is already running from a VPS server it is so slow specially during peak times.
Any recommendations what should I do? Is it possible to add additional servers or third party webhosting company to help handling the site traffic.
If this is possible, what should I do, how should I start. Is Round Robin DNS applicable in Dreamhost, if yes, how, what should I modify?