I have set up disk space monitoring, and it works great if space drops below a certain percentage, but does not alert when space drops below a certain size. The system health package is set to issue a warning if space drops below 5% and also issue a warning if space drops below 1GB. The Event Log monitor looks for event IDs 10500 (percentage), 10501 (space) and 10502 (trend), but only event ID 10500 and 10502 show up in the event logs of the servers, although several of them have dropped below the space threshold. I have tried removing the percentage reporting from the health package, and then only the trend gets logged. For some reason, 10501 just won't log. Any ideas? Am I doing something wrong?