MS SQL Server Perfmon Availability Replica (MSSQL_SERVER_PERFMON_AVAILABILITY_REPLICA)

The MSSQL_SERVER_PERFMON_AVAILABILITY_REPLICA application class reports information about the availability replicas in AlwaysOn availability groups in SQL Server. All availability replica performance counters apply to both the primary replica and the secondary replicas, with send/receive counters reflecting the local replica.

For the most part, the primary replica sends most of the data, and the secondary replicas receive the data. However, secondary replicas send ACKs and some other background traffic to the primary replicas.

Note that on a given availability replica, some counters will show a zero value, depending on the current role, primary or secondary, of the local replica.

Application class attributes

Attributes (parameters)