If you have APM, you can monitor the free space percentage on the Volume Mount Points via a Windows Script Monitor with a VBScript. WE use this and it works great. Below is the Monitor Description and the VBScript we use and the Script Arguments. You will have to manually edit the WarningThreshold and CriticalThreshold variable values before running on the nodes. As long as you know which nodes have Volume Mount Points, you would then assign this SAM Template to those nodes. You also may want to set up an Advanced Alert. :
Component Description: This monitor is required only on nodes with Sub-Directory Mount Points. We are using the out-of-the-box SolarWinds Volume Monitoring instead for regular root level drive monitoring (e.g. C:\). Logical Disk Freespace check for Sub-Directory Mount Points (where the DriveLetter IS NULL). If Statistic has a value of 2 then one or more Sub-Directory Mount Point drives are in Warning status and no Sub-Directory Mount nPoint drives in Critical Status (reports on all Sub-Directory Mount Point drives in Warning status). If Statistic has a value of 3 then one or more Sub-Directory Mount Point drives are in Critical status (reports on all Sub-Directory Mount Point drives in both Waring or Critical status). Reports on all Logical Volumes in WMI Win32_Volume object where the DriveLetter IS NULL (designating it as a Sub-Directory Mount Point) AND the DriveType = 3 (Local Disk)
Script Arguments: ${IP}
Script Engine: vbscript
------------start VBScript----------------
'Option Explicit
On Error Resume Next
' Set Thesholds for this component
'Set Warning Threshold for all drives
Const WarningThreshold = 10
' Set Critical Threshold for all drives
Const CriticalThreshold = 5
' Required for WMI Query
Const wbemFlagReturnImmediately = &h10
Const wbemFlagForwardOnly = &h20
' Define Variables
Dim WshShell, objArgs, strIP, objWMIService, LogicalVolumes
Dim objItem, strDriveName, IntCapacity, IntFree, DiskFreePct
Dim strIgnoreFlag
Dim strMessage, IntStatistic
' Analyze Arguments (one argument is expected which is the IP Address of the Node to monitor
set objArgs = WScript.Arguments
If objArgs.Count > 0 Then
strIP= objArgs(0)
End If
' Set the initial Statistic value to 0 which is all drives normal
IntStatistic = 0
' Set strIgnoreFlag = "No"
'
' If IntStatistic stays at 0 then all Sub-Directory Mount Point drives (DriveLetter IS NULL) are normal
'
' If IntStatistic has a value of 2 then one or more Sub-Directory Mount Point drives are in Warning status and no drives in Critical Status (reports on all drives in Warning status)
'
' If IntStatistic has a value of 3 then one or more Sub-Directory Mount Point drives are in Critical status (reports on all drives in both Waring or Critical status)
'Set the initial Message to blank
strMessage = ""
Set WshShell = CreateObject("WScript.Shell")
Set objWMIService = GetObject("winmgmts:\\" & strIP & "\root\CIMV2")
If Err <> 0 Then
WScript.Echo "Message: Error Could not connect to WMI root CIMV2 Namespace on IP " & strIP & ". The Error Number was: " & Err.Number & ". The Error Description was: " & Err.Description & "."
Wscript.echo "Statistic: 1"
Err.Clear
Wscript.quit(1)
Else
Set LogicalVolumes = objWMIService.ExecQuery("SELECT * FROM Win32_Volume where DriveType = '3' AND DriveLetter IS NULL", "WQL", wbemFlagReturnImmediately + wbemFlagForwardOnly)
If Err <> 0 Then
WScript.Echo "Message: Error Could not connect to WMI Win32_Volume on IP " & strIP & ". The Error Number was: " & Err.Number & ". The Error Description was: " & Err.Description & "."
Wscript.echo "Statistic: 1"
Err.Clear
Wscript.quit(1)
Else
For Each objItem In LogicalVolumes
If ( objItem.DriveType = 3 ) Then
strDriveName = objItem.Name
'Checking Drivename for the patterns HarddiskVolume, LiveBackups, MAGLIB, and MagLib, and if found, skips to next drive in loop (zero means the pattern is not found)
If strDriveName <> "" AND (InStr(1,strDriveName, "HarddiskVolume", 1) = 0) AND (InStr(1,strDriveName, "Livebackups", 1) = 0) AND (InStr(1,strDriveName, "MAGLIB", 1) = 0) AND (InStr(1,strDriveName, "MagLib", 1) = 0) Then
' strMessage = strMessage & " Logical Volume Name: " & strDriveName
IntFree = objItem.FreeSpace
' strMessage = strMessage & " Free Space: " & IntFree & " bytes"
IntCapacity = objItem.Capacity
' strMessage = strMessage & " Capacity: " & IntCapacity & " bytes"
DiskFreePct = ((IntFree/IntCapacity)*100.00)
DiskFreePct = Round(DiskFreePct, 2)
' strMessage = strMessage & " Disk_Free_Pct: " & DiskFreePct
If ( DiskFreePct <= WarningThreshold ) Then
' strMessage = strMessage & " WarningThreshold LOOP Entered."
If DiskFreePct <= CriticalThreshold Then
' strMessage = strMessage & " CriticalThreshold LOOP Entered."
IntStatistic = 3
strMessage = strMessage & " --- " & strDriveName & " Critical " & DiskFreePct & "% <=" & CriticalThreshold & "%."
Else
If IntStatistic <= 2 Then
IntStatistic = 2
' strMessage = strMessage & " Setting IntStatistic to 2. Warning Threshold exceeded on " & strDriveName & "."
strMessage = strMessage & " --- " & strDriveName & " Warning " & DiskFreePct & "% <=" & WarningThreshold & "%."
Else
' strMessage = strMessage & " Warning Threshold exceeded on " & strDriveName & "."
strMessage = strMessage & " --- " & strDriveName & " Warning " & DiskFreePct & "% <=" & WarningThreshold & "%."
End If
End If
End If
Else
strIgnoreFlag = "Yes"
strMessage = strMessage & " LogicalDriveName: " & strDriveName & " has been ignored due to either a blank Drive Name or due to one of the following patterns being in the Drive Name: HarddiskVolume LiveBackups MAGLIB MagLib."
End If
End If
Next
If IntStatistic = 0 Then
If strIgnoreFlag = "Yes" Then
strMessage = "The Disk Free Space for all Sub-Directory Mount Point drives is Normal." & strMessage
Else
strMessage = "The Disk Free Space for all Sub-Directory Mount Point drives is Normal."
End If
End If
WScript.Echo "Message: " & Date & " " & Time & " " & strMessage & " Statistic Value is: " & IntStatistic
WScript.Echo "Statistic: " & IntStatistic
WScript.Quit(IntStatistic)
End If
End If
WScript.Quit(0)
------------end VBScript-----------------