I am planning to deploy ZCS 6 on CentOS 5.3 x64 in my university. What you recommend to use internally Zimbra Desktop or Zimbra Web Interface. For sure users externally will use the web client but internally from performance issues what would be the best??. I have about 500 internal simultaneous users who potentially may access the Zimbra concomitantly of the overall account list of 4000 Zimbra accounts.

Many thanks.