As part of a failover plan or a load-balancing system, you can have multiple servers running the same Replication Server configuration, using redundant licenses across all servers. The redundant server system can be connected by LAN or by a WAN.
A redundant server system is an excellent load-balancing mechanism for physically distant servers. The redundant license allows you to specify local servers as the first in the queue, and make remote servers available as backup. The SySAM application attempts to check out a license from a license-file list, starting with the first server. If that server fails for any reason, the second server in the list is contacted, and so on.
The redundant server system also provides failover protection. If one server in the list goes down for any reason, the second server responds to the license request. If that server fails too, the next server in line is contacted, and so on.
