Disk space alert does not trigger for Exchange Servers

10/30/2018 6:40 PM

9/15/2022 4:06 PM

This article provides brief information and steps to resolve the issue when Disk space alert does not trigger for Exchange Servers.

2 Exchange Servers ran out of disk and no alerts were trigggered: 

• This resulted in exchange database being down impacting email services.
• There is no entry in Event and Alert tabs on 10/03 for this node for the disk space issue on R drive. 
• R drive ran out of disk space on 10th March which caused the Exchange database to go down.

Network Performance Monitor

DB Tables and Diagnostics proved R: Drive was added to some exchange Servers and on other ones it did not trigger as it was not added at that point in ti,e. G Drive triggered fine on same day.
R: Drives Added recently had much higher Volume IDs.

Example:

Exchange Servers:

NodeID	ObjectSubType	Caption	IOSVersion
249	WMI	AMAIL02	Windows 2012 Server
250	WMI	AMAIL01	Windows 2012 Server
251	WMI	BMAIL02	Windows 2012 Server
252	WMI	BMAIL01	Windows 2012 Server

Node:

• NodeiD               111
• Node Name       BMail02
• MachineType    Windows Server 2012
• PollingVia            WMI

Volumes

• VolumeC            Used= 83%     ID=2622     C:\ Label:OSDisk 65667D9B0
• VolumeD            Used= 47%     ID=2623      D:\ Label: EEE31F4B

NodeID	VolumeID	VolIndex	Caption	VolumePercentUsed	VolSpaceUsed	VolSpaceAvail	VolumeSize	Status	VolumeResponding
111	2620	1	Physical Memory	19.01	6530150400	27829116928	34359267328	1	Y
111	2621	2	Virtual Memory	18.58	7182680064	31471554560	38654234624	1	Y
111	2622	4	C:\ Label:OSDisk 0C07D9B0	83.40	56875360256	11318775808	68194136064	1	Y
111	2623	5	D:\ Label: EEE31F4B	47.71	20489826304

To resolve this in Future, simply LIST Resources on those  Exchange Servers and tick all Drives needing to be monitored. R: Drive in this instance. 

Node Details Page or Manage Nodes > List Resource > Add R: Drive and save.

Useful Queries to troubleshoot:

AlertsHistoryView
SELECT TOP 2000 * FROM [dbo].[AlertHistoryView]
where RelatedNodeID = 251
order by timestamp desc

Volumes:
SELECT TOP 5000 * FROM [dbo].[VolumeUsage_Detail]
where volumeID = 2617
order by Datetime desc
​
SELECT TOP 5000 * FROM [dbo].[VolumeUsage_Hourly]
where volumeID = 2617
order by Datetime desc

Events:
select top 5000 * from Events
where NetworkNode = 251
order by eventTime desc

EventID	EventTime	NetworkNode	EventType	Message
1455259	2016-03-22T13:45:	111	5000	G: Drive: Warning Memory Utilisation (>90% <95%) - Windows 95 This alert reports the percentage of physical memory being used on Windows devices.
1455253	2016-03-22T13:43:	111	5000	G: Drive:Warning Memory Utilisation (>90% <95%) - Windows 95 This alert reports the percentage of physical memory being used on Windows devices.
1455252	2016-03-22T13:43:	111	5000	G: Drive:Warning Memory Utilisation (>90% <95%) - Windows 95 This alert reports the percentage of physical memory being used on Windows devices.
1455143	2016-03-22T11:25:	111	5000	G: Drive:Warning Memory Utilisation (>90% <95%) - Windows 95 This alert reports the percentage of physical memory being used on Windows devices.