Hot (B) - Input is received from both servers. In this
mode, the client connects to and communicates with both servers, creating
subscriptions and monitored items on each. The server determines which values to
use, but generally manages both servers at the same time. If a server switch
occurs, no additional action is needed because both servers are already being
handled synchronously.
Figure 1. HotB - Input from both servers
Hot (B) - Input is received from the higher-level server.
Hot and Mirrored The client connects and communicates
with only one server at a time. If this server fails, the client establishes a
secure connection to the other server and reactivates the previous session on
it.
Figure 2. Hot and Mirrored
