eG Monitoring
 

Measures reported by MsSqlAlsAvlTest

The AlwaysOn Availability Groups feature is a high-availability and disaster-recovery solution that provides an enterprise-level alternative to database mirroring. Introduced in SQL Server 2012, AlwaysOn Availability Groups maximizes the availability of a set of user databases for an enterprise. An availability group supports a failover environment for a discrete set of user databases, known as availability databases, that failover together. An availability group supports a set of read-write primary databases and one to eight sets of corresponding secondary databases. Optionally, secondary databases can be made available for read-only access and/or some backup operations. An availability group fails over at the level of an availability replica. Failovers are not caused by database issues such as a database becoming suspect due to a loss of a data file, deletion of a database, or corruption of a transaction log. In environments where critical data is stored, it is important for the database to be highly available. The AlwaysOn Availability Groups if enabled, will help administrators in maintaining such high availability. Therefore, it is important to monitor the status of the AlwaysOn Availability Groups. The MsSqlAlsAvlTest test exactly helps in this regard.

This test reports whether the AlwaysOn Availability Group feature is enabled and the current state of the AlwaysOn Availability Groups manager.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Alwyson_groupstate Indicates whether/not the Always on Availability Groups feature is enabled. Number The values reported by this measure and their numeric equivalents are available in the table below:

Measure Value Numeric Value
No 0
Yes 1

Note:

This measure reports the Measure Values listed in the table above to indicate whether/not the Always on Availability Groups concept was enabled. However, in the graph, this measure is indicated using the Numeric Values listed in the above table.
Alwyson_mgrstate Indicates the current state of the Always on Availability Groups manager. Number The values reported by this measure and their numeric equivalents are available in the table below:

Measure Value Numeric Value
Failed 0
Pending Communiaction 1
Running 2

Note:

This measure reports the Measure Values listed in the table above to indicate the current status of the Always on Availability Groups manager. However, in the graph, this measure is indicated using the Numeric Values listed in the above table.