No alerts for Logical disk space
Hi All, Currently i am using SCOM 2007R2 in our environment. I came to know that alerts not trigerring for Logical disk. But the Logical disk monitor is enabled in the authoring tab. But once in a while the some alerts are trigerring. But i am not sure its working. Some of the agents under monitoring had issues in disk space during that no alerts in the console. Kindly assist me. Regards, Sandy.
May 3rd, 2012 9:06am

Hi You might want to create a view for closed alerts and try to follow the alert history back. One common problem is administrators closing alerts when the underlying monitor is still unhealthy. Another is that the monitor in the lastest MP seems to be set to alert on warning which means you won't get a critical alert if the health state goes from healthy --> Warning --> Critical (an alert will only be triggered once - at the warning state). By looking back at closed alerts (or looking at warning alerts) plus using health explorer against the disk, you should be able to determine if it is end user or SCOM error. Cheers GrahamRegards Graham New System Center 2012 Blog! - http://www.systemcentersolutions.co.uk View OpsMgr tips and tricks at http://systemcentersolutions.wordpress.com/
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May 3rd, 2012 9:35am

Hi Sandy, Have you setup the threshold value for disk monitoring correctly? For disk space alerts to be generated both MB and % need to be exceeded. Can you check in the monitor for the value? You can refer to below on disk space monitoring. http://blogs.technet.com/b/jonathanalmquist/archive/2009/04/04/logical-disk-free-space-monitor.aspx HTH, Varun
May 3rd, 2012 9:41am

Try the following 1. whether MP is the updated ones 2. You may use the following approach for troubleshoot * using override to revert the health /unhealth condition and check whether alert is trigger * If yes, use health explorer to see the value and compare the alert the condition. roger
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May 3rd, 2012 9:50am

Hi All, Thanks for your reply. Currently i changed the threshodl severity to "Crticial" and change the threshold of the specific server to trigger alert manually. But no go. Still now a haven't got any alert. Kindly advice. Regards, Sandy
May 3rd, 2012 12:02pm

Hi Sandy Can you confirm what settings you have changed. You can't change the severity to critical on this monitor - it is a double threshold monitor that already has warning and severity thresholds. You also cannot trigger the alert manually (recalculate health only works for on-demand monitors). Are you using a custom monitor here? If you want to change the default behaviour then the first override option is the one to consider: "Alert on state" - default is to alert in critical or warning state. This means if you get an alert on warning state then you won't get another alert when state changes from warning to critical. You also won't get new alerts for disks that are currenly unhealthy. Perhaps as a first step, go to monitoring view, windoes servers, disk state view and reset all disk states to healthy. Then watch the health states change --> see if alerts are generated. Cheers Graham Regards Graham New System Center 2012 Blog! - http://www.systemcentersolutions.co.uk View OpsMgr tips and tricks at http://systemcentersolutions.wordpress.com/
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May 3rd, 2012 12:10pm

Hi Graham, Kindly find below screenshot for logical disk space parameter. I am currenlty using SCOM 2007R2. In that there is view for Disk state but there is option for Disk health. Under that lot shows Warning. do i need to reset all one by one. or any other option is there.
May 3rd, 2012 12:52pm

Hi Sandy, Have you setup the threshold value for disk monitoring correctly? For disk space alerts to be generated both MB and % need to be exceeded. Can you check in the monitor for the value? You can refer to below on disk space monitoring. http://blogs.technet.com/b/jonathanalmquist/archive/2009/04/04/logical-disk-free-space-monitor.aspx HTH, Varun
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May 3rd, 2012 4:38pm

any one help me in this issue.
May 9th, 2012 12:33am

I think Varun has hit the nail on the head and has been a pain point for this monitor for many SCOM admins. You have to cross both thresholds to raise an alert. This means you would have to know the size of each drive to understand how the percentage compares to MB free. The latest mp update for Windows OS explains that and made some other changes. What I do, is I ask application monitoring teams what they want to be alerted on free space or MB free. Most of the time they say free space. So I create a group of logical disks for their application and override the warning and error settings so that MB free is like > 1 TB and % free is to their warning and critical settings say 15 %for Warning 10 % for Critical. Now the monitor looks at the at the two values. Does the disk have < 1 TB of space free? YES, does it have < 15% free? No, disk is healthy. Now one condition is always true < 1 TB free (unless you have some huge logical disks) so % change will always generate an alert if below my settings. This is one simple work around for this monitor, and the best solution if you ask me.Regards, Blake Email: mengotto<at>hotmail.com Blog: http://discussitnow.wordpress.com/
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May 9th, 2012 1:59am

I think Varun has hit the nail on the head and has been a pain point for this monitor for many SCOM admins. You have to cross both thresholds to raise an alert. This means you would have to know the size of each drive to understand how the percentage compares to MB free. The latest mp update for Windows OS explains that and made some other changes. What I do, is I ask application monitoring teams what they want to be alerted on free space or MB free. Most of the time they say free space. So I create a group of logical disks for their application and override the warning and error settings so that MB free is like > 1 TB and % free is to their warning and critical settings say 15 %for Warning 10 % for Critical. Now the monitor looks at the at the two values. Does the disk have < 1 TB of space free? YES, does it have < 15% free? No, disk is healthy. Now one condition is always true < 1 TB free (unless you have some huge logical disks) so % change will always generate an alert if below my settings. This is one simple work around for this monitor, and the best solution if you ask me.Regards, Blake Email: mengotto<at>hotmail.com Blog: http://discussitnow.wordpress.com/
May 9th, 2012 2:01am

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