asked on

need assistance with a powershell diskspace alerting script

hello, i have the following script setup to notify on low disk space, however, i need a way to set different thresholds per disk. for example, i want to alert on 20% space on the C: partition but 50% space on all other drives.

i've attached the current script. any help would be much appreciated.

thx - S.

Get-Content c:\scripts\serverliste2010.txt | ForEach-Object {Get-WmiObject -Class Win32_LogicalDisk -ComputerName $_ -Filter "drivetype=3"} | %{
    Add-Member -InputObject $_ -MemberType noteproperty -Name freepercent -Value ($_.freespace/$_.size*100) -PassThru
} | ?{$_.freepercent -lt 50} | ForEach-Object {
    $message = "Low disk space on server $($_.__server) on disk $($_.name), actual free size $([int] $_.freepercent)%"
    
    Send-MailMessage -Body $message -From E2010-diskspacealert@mydomain.com -To alerts@mydomain.com -SmtpServer 10.x.x.x -Subject "Low disk space notification"
}

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I Qasmi

#*=============================================================================
#* Script Name: Diskmonitor.ps1
#* Created: 02-25-2009
#* Author: Colin Smiht
#* Company:
#* Email:
#* Web: http://sysadminsmith.com
#*=============================================================================
#* Purpose: This script will gather disk information about all the servers listed in your computerlistall file. This is a csv file.
#* It will also send out notifications via email to anyone you want based on low disk parameters that you provide
#*
#*=============================================================================

##########################################
### Gather Disk Information ###
##########################################
Clear-Content "D:\Scripts\Powershell\PAC\lowdisk.txt"
$i = 0
$users = "some.email@address.com"
$computers = import-csv "D:\Scripts\computerlistall.txt"
echo "ServerName Drive Letter Drive Size Free Space Percent Free" >> "D:\Scripts\Powershell\PAC\lowdisk.txt"
echo "---------- ------------ ---------- ---------- ------------" >> "D:\Scripts\Powershell\PAC\lowdisk.txt"
foreach ($line in $computers)
{
$computer = $line.hostname
$ip = $line.ip
$computer
$ip
}
$drives = Get-WmiObject -ComputerName $computer Win32_LogicalDisk | Where-Object {$_.DriveType -eq 3}
foreach($drive in $drives)
{
$size1 = $drive.size / 1GB
$size1
$size = "{0:N2}" -f $size1
$size
$free1 = $drive.freespace / 1GB
$free = "{0:N2}" -f $free1
$ID = $drive.DeviceID
$a = $free1 / $size1 * 100
$b = "{0:N2}" -f $a

##############################################
## Determine if any disks low ##
##############################################

if (($ID -eq "D:") -or ($ID -eq "S:") -or ($ID -eq "T:") -or ($ID -eq "C:") -and ($free1 -lt 1))
{
echo "$computer $ID $size $free $b" >> "D:\Scripts\Powershell\PAC\lowdisk.txt"
$i++
#[char]10 | Out-File -append ./low.txt
}
}

####################################################

## Send Notification if alert $i is greater then 0 ##

####################################################

if ($i -gt 0)

{

foreach ($user in $users)

{

echo ¿Sending Email notification ro $user¿

$smtpServer = ¿smtp server¿

$smtp = New-Object Net.Mail.SmtpClient($smtpServer)

$emailFrom = ¿fromuser@domain.com¿

$subject = ¿Email Subject¿

foreach ($line in Get-Content ¿D:\Scripts\lowdisk.txt¿)

{

$body += ¿$line `n¿

}

$smtp.Send($EmailFrom,$user,$subject,$body)

$body = ¿¿

}

}

I Qasmi

This is a script that will monitor the physical drives of any machines that you have in an input file. It will send out notifcations if the free space is below a threshhold that is defined by you.

I Qasmi

http://www.simple-talk.com/sysadmin/powershell/disk-space-monitoring-and-early-warning-with-powershell/

Michael Leonard

ASKER

iQasmi, i'm not sure if you read my original question, i already have a script that monitors and alerts on diskspace, [see the code i posted]
what i am looking for is a way to modify this code to set different thresholds on a per disk basis.

for example. i want to be alerted on 20% space on the c: drive but 50% threshold on all other drives.

thanks,

S.

Michael Leonard

ASKER

Mike do you have a way to accomplish this?

chrismerritt

Try this, much neater :)

At the moment it just writes to host when it finds a disk under your criteria, if you're happy then you can remove the write-hosts and uncomment the Send-MailMessage lines.

$MasterArray is actually a collection of all disks at the end, it's not really needed but I prefer to work with sets of data, and it gives you the option to do something with it later.

$MasterArray = @()

$ServerList = "."

foreach ($Server in $ServerList)
{
	$ServerDrives = Get-WmiObject -Class Win32_LogicalDisk -ComputerName $Server -Filter "drivetype=3"
	foreach ($ServerDrive in $ServerDrives)
	{
		$TempArray = @()
		$TempArray = "" | Select Server, DeviceID, FreeSpaceGB, SizeGB, PercentFree, VolumeName
		
		$ServerDriveFreeSpaceGB = ($ServerDrive.FreeSpace /1GB).ToString("N2").Replace(",","")
		$ServerDriveSizeGB = ($ServerDrive.Size /1GB).ToString("N2").Replace(",","")
		
		[string]$TempArray.Server = $Server
		[string]$TempArray.DeviceID = $ServerDrive.DeviceID
		[decimal]$TempArray.FreeSpaceGB = $ServerDriveFreeSpaceGB
		[decimal]$TempArray.SizeGB = $ServerDriveSizeGB
		[decimal]$TempArray.PercentFree = ($ServerDriveFreeSpaceGB / $ServerDriveSizeGB).ToString("P2").Replace(" %","")
		[string]$TempArray.VolumeName = $ServerDrive.VolumeName
		
		if ($TempArray.PercentFree -lt 20 -and $TempArray.DeviceID -eq "C:")
		{
			$Message = "Low disk space on server $($TempArray.Server) on disk $($TempArray.DeviceID), actual free size $($TempArray.FreeSpaceGB) GB / $($TempArray.SizeGB) GB - $($TempArray.PercentFree) %"
			write-host $Message
			#Send-MailMessage -Body $Message -From E2010-diskspacealert@mydomain.com -To alerts@mydomain.com -SmtpServer 10.x.x.x -Subject "Low disk space notification"
		}
		
		if ($TempArray.PercentFree -lt 50 -and $TempArray.DeviceID -ne "C:")
		{
			$Message = "Low disk space on server $($TempArray.Server) on disk $($TempArray.DeviceID), actual free size $($TempArray.FreeSpaceGB) GB / $($TempArray.SizeGB) GB - $($TempArray.PercentFree) %"
			write-host $Message
			#Send-MailMessage -Body $Message -From E2010-diskspacealert@mydomain.com -To alerts@mydomain.com -SmtpServer 10.x.x.x -Subject "Low disk space notification"		
		}
		
		$MasterArray += $TempArray
	}
}

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chrismerritt

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Michael Leonard

ASKER

Chris this is brilliant. Exactly what i was looking for.
many thanks!

S.