lincese for 3 windows servers

Hi,
I have already a single User license --> so I am using the 24x7 scheduler for windows on a single server.

I would like to have a backup and a DR server running 24x7 and ideally have a WEBGUI as well

can I do this buying 3 single user 24x7 windows licenses and the GUI license as well ? or do I need to buy the site license?

regards,

The web-based console is a separate part. It doesn't come with a single install license. Single license covers basic installation of the software on a single system. The web-based console is packaged with the site license and can be also obtained separately, please check http://softtreetech.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=24X7-40-WC
The R&D install can be used both to run the local scheduler for development as use this license to run 24x7 Remote control for accessing 2 other servers - this is a sort of a graphical client for 24x7 schedulers and agents for Windows.