Client Use of Multiple License Servers

An AVEVA application always attempts to check-out a license from the first server in the AVEVA_LICENSE_SERVER_LIST. Only if that check-out fails, either because the server cannot be contacted or because it has no more licenses for a particular feature, does the application attempt to check-out from the next server in the list.

There are two reasons why you might configure a workstation with an AVEVA_LICENSE_SERVER_LIST pointing to more than one hostname:

1. Because you have three redundant license servers. If the first server fails, the client can connect to the second server and proceed using the same licenses.

2. Because, in consultation with AVEVA License Administration, you have deliberately divided your license entitlement across several, independent servers. For example, if you have users in several different locations, you can choose to install independent ALSs in several locations, with each client workstation attempting to connect to the local ALS first, then attempting to connect to the other ALSs if the local ALS has no licenses left.