Log and File Group utilization alarms not firing when OS collections are not enabled on the SQL Server agent (4305578)

Log and File Group utilization alarms not firing when OS collections are not enabled on the SQL Server agent.

The following metrics from the "DBSS_File_Group" topology are noted not to be populating correctly:

• DBSS_File_Group_Utilization_For_Rule
• DBSS_Log_Files_Utilization_For_Rule

For the alarms "DBSS - File Group Utilization" and "DBSS - Log File Utilization" the following behavior applies regarding the OS collections:

1. For version 5.7.5.41 and lower the OS collections are needed. The necessary data for the alarms to fire will not populate without them.
2. Starting from 5.7.5.50 the OS collections are no longer needed, the rules should work as expected.

If alarms are still not working as expected, the following KB Article should be reviewed:

Investigating database agent rule and alarm issues (rules / alarms not firing) (114543)

For additional issues regarding the File group utilization alarms:

File Group Utilization alarm not firing due to lack of space in Primary filegroup (242179)

How to have the DBSS File Group Utilization rule ignore autogrowth SQL Server databases (207970)

"DBSS - Log Files Utilization" rule does not monitor filegroups with files on different disks (147919)