State of the mirror database and of the database mirroring session.
0 = Suspended
1 = Disconnected from the other partner
2 = Synchronizing
3 = Pending failover
4 = Synchronized
5 = The partners are not synchronized. Failover is not possible now.
6 = The partners are synchronized. Failover is potentially possible. For information about the requirements for the failover, see Database Mirroring Operating Modes: https://learn.microsoft.com/en-us/sql/database-engine/database-mirroring/database-mirroring-operating-modes?view=sql-server-ver16.