Main Primary

server instance running opHA with role = 'primary_master'

Secondary Primary

server instance running opHA with role = 'master'. Also referred to as just 'primary'.

Peer

server instance running opHA with role = 'poller' or 'mirror'. It can optionally be of type 'streaming' which means that it is linked to an ophad instance.

Poller

server instance running opHA with role = 'poller'

Mirror

server instance running opHA with role = 'mirror'. It is paired with a poller and polls the same devices as that poller, however its data is not sync'd with primary unless the poller is offline.

Producer

an instance of the ophad process running in 'producer' mode (as per configuration). This will typically be running on the same server instances as the primary.

Consumer

an instance of the ophad process running in 'consumer' mode (as per configuration). This will typically be running on the same server instance as the poller (or mirror)