One of our client uses EPiServer 4 behind the load balancer. In this setup he has two servers "master" and a "slave". Master setup was unstable and went down some time ago.
Today we had an exception "This slave site failed because of old master license information" and needed to turn on "master" for a while to refresh license information.
How long can the "slave" licensed environment work without "master" beeing active?
If memory serves me correct I think the master information will be valid for a month.