Follow-up from the last reply by me: Now that I have the Exchange Health service running, I'm getting spammed by the same messages as @MS reports:
The performance counter '\OSL-SYS-EX03LogicalDisk(C:)Free Megabytes' sustained a value of '22 208,00', for the '15' minute(s) interval starting at '28.07.2013 13:17:00'. Additional information: None. Trigger Name:DatabaseDriveSpaceTrigger. Instance:c:
The performance counter '\OSL-SYS-EX03LogicalDisk(HarddiskVolume1)Free Megabytes' sustained a value of '107,00', for the '15' minute(s) interval starting at '28.07.2013 13:17:00'. Additional information: None. Trigger Name:DatabaseDriveSpaceTrigger. Instance:harddiskvolume1
The first one is the operating system, and I don't see how 22GB free is a problem? The second one is the recovery partition, which shouldn't be monitored at all.