Current role of a database

7,654 1
This metric allows you to keep track of the role of a given database within your mirroring set up. The single value returned tells you whether the database is the principal or the mirror. Read more

Status of the witness

15,211 0
This metric returns a single value that tells you whether the witness is connected, disconnected or unknown. Knowing if it is offline can be as important as knowing if your mirrored databases are available. Read more

Mirroring latency

13,987 1
This metric measures the latency of a mirroring stream. This is useful for checking the historical status of mirroring and also alerting when mirroring is delayed. Read more