Powershell script to get the low disk space on the servers...

Hi,
We have many SQL & Sharepoint servers running on windows server. I need some Powershell script to get the low disk space on those servers and it should send an mail alert saying "Disc d:\ have less than threshold 15% free space".
Awaiting for response.
Thanks
Anil

you should be able to use this powershell script which you can run as a scheduled task.
just change the details at the start of the script to point the script to the right location to create log files. you will need to have a plain text file containing a list of server names or ip addresses that you want to check drive space on.
# Change the following variables based on your environment
#specify the path to the file you want to generate containing drive space information
$html_file_dir = "\\server\share\DriveSpace"
#specify the path and file name of the text file containing the list of servers names you want to check drive space on - each server name on a seperate line in plain text file
$server_file = "\\server\share\servers.txt"
#speicfy the from address for the email
$from_address = "[email protected]"
#specify the to address for the email
$to_address = "[email protected]"
#specify the smtp server to use to send the email
$email_gateway = "smtp.domain.com" # Can either be DNS name or IP address to SMTP server
# The seventh line from the bottom (line 167) is used if your smtp gateway requires authentication. If you require smtp authentication
# you must uncomment it and set the following variables.
$smtp_user = ""
$smtp_pass = ""
# Change the following variables for the style of the report.
$background_color = "rgb(140,166,193)" # can be in rgb format (rgb(0,0,0)) or hex format (#FFFFFF)
$server_name_font = "Arial"
$server_name_font_size = "20px"
$server_name_bg_color = "rgb(77,108,145)" # can be in rgb format (rgb(0,0,0)) or hex format (#FFFFFF)
$heading_font = "Arial"
$heading_font_size = "14px"
$heading_name_bg_color = "rgb(95,130,169)" # can be in rgb format (rgb(0,0,0)) or hex format (#FFFFFF)
$data_font = "Arial"
$data_font_size = "11px"
# Colors for space
$very_low_space = "rgb(255,0,0)" # very low space equals anything in the MB
$low_space = "rgb(251,251,0)" # low space is less then or equal to 10 GB
$medium_space = "rgb(249,124,0)" # medium space is less then or equal to 100 GB
#### NO CHANGES SHOULD BE MADE BELOW UNLESS YOU KNOW WHAT YOU ARE DOING
# Define some variables
$ErrorActionPreference = "SilentlyContinue"
$date = Get-Date -UFormat "%Y%m%d"
$html_file = New-Item -ItemType File -Path "$html_file_dir\DiskSpace_$date.html" -Force
# Create the file
$html_file
# Function to be used to convert bytes to MB or GB or TB
Function ConvertBytes {
param($size)
If ($size -lt 1MB) {
$drive_size = $size / 1KB
$drive_size = [Math]::Round($drive_size, 2)
[string]$drive_size + ' KB'
}elseif ($size -lt 1GB){
$drive_size = $size / 1MB
$drive_size = [Math]::Round($drive_size, 2)
[string]$drive_size + ' MB'
}ElseIf ($size -lt 1TB){
$drive_size = $size / 1GB
$drive_size = [Math]::Round($drive_size, 2)
[string]$drive_size + ' GB'
}Else{
$drive_size = $size / 1TB
$drive_size = [Math]::Round($drive_size, 2)
[string]$drive_size + ' TB'
# Create the header and footer contents of the html page for output
$html_header = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en-US" xml:lang="en-US" xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Server Drive Space</title>
<style type="text/css">
.serverName { text-align:center; font-family:"' + $server_name_font + '"; font-size:' + $server_name_font_size + `
'; font-weight:bold; background-color: ' + $server_name_bg_color + '; border: 1px solid black; width: 150px; }
.headings { text-align:center; font-family:"' + $heading_font + '"; font-size:' + $heading_font_size + `
'; font-weight:bold; background-color: ' + $heading_name_bg_color + '; border: 1px solid black; width: 150px; }
.data { font-family:"' + $data_font + '"; font-size:' + $data_font_size + '; border: 1px solid black; width: 150px; }
#dataTable { border: 1px solid black; border-collapse:collapse; }
body { background-color: ' + $background_color + '; }
#legend { border: 1px solid black; ; right:500px; top:10px; }
</style>
<script language="JavaScript" type="text/javascript">

</script>
</head>
<body>'
$html_footer = '</body>
</html>'
# Start to create the reports file
Add-Content $html_file $html_header
# Retrieve the contents of the server.txt file, this file should contain either the
# ip address or the host name of the machine on a single line. Loop through the file
# and get the drive information.
Get-Content $server_file |`
ForEach-Object {
# Get the hostname of the machine
$hostname = Get-WmiObject -Impersonation Impersonate -ComputerName $_ -Query "SELECT Name From Win32_ComputerSystem"
$name = $hostname.Name.ToUpper()
Add-Content $html_file ('<Table id="dataTable"><tr><td colspan="3" class="serverName">' + $name + '</td></tr>
<tr><td class="headings">Drive Letter</td><td class="headings">Total Size</td><td class="headings">Free Space</td></tr>')
# Get the drives of the server
$drives = Get-WmiObject Win32_LogicalDisk -Filter "drivetype=3" -ComputerName $_ -Impersonation Impersonate
# Now that I have all the drives, loop through and add to report
ForEach ($drive in $drives) {
$space_color = ""
$free_space = $drive.FreeSpace
$total_space = $drive.Size
$percentage_free = $free_space / $total_space
$percentage_free = $percentage_free * 100
If ($percentage_free -le 5) {
$space_color = $very_low_space
}elseif ($percentage_free -le 10) {
$space_color = $low_space
}elseif ($percentage_free -le 15) {
$space_color = $medium_space
Add-Content $html_file ('<tr><td class="data">' + $drive.deviceid + '</td><td class="data">' + (ConvertBytes $drive.size) + `
'</td><td class="data" bgcolor="' + $space_color + '">' + (ConvertBytes $drive.FreeSpace) + '</td></tr>')
# Close the table
Add-Content $html_file ('</table></br><div id="legend">
<Table><tr><td style="font-size:12px">Less then or equal to 5 % free space</td><td bgcolor="' + $very_low_space + '" width="10px"></td></tr>
<tr><td style="font-size:12px">Less then or equal to 10 % free space</td><td bgcolor="' + $low_space + '" width="10px"></td></tr>
<tr><td style="font-size:12px">Less then or equal to 15 % free space</td><td bgcolor="' + $medium_space + '" width="10px"></td></tr>
</table></div>')
# End the reports file
Add-Content $html_file $html_footer
# Email the file
$mail = New-Object System.Net.Mail.MailMessage
$att = new-object Net.Mail.Attachment($html_file)
$mail.From = $from_address
$mail.To.Add($to_address)
$mail.Subject = "Server Diskspace $date"
$mail.Body = "The diskspace report file is attached."
$mail.Attachments.Add($att)
$smtp = New-Object System.Net.Mail.SmtpClient($email_gateway)
#$smtp.Credentials = New-Object System.Net.NetworkCredential($smtp_user,$smtp_pass)
$smtp.Send($mail)
$att.Dispose()
# Delete the file
Remove-Item $html_file
Regards,
Denis Cooper
MCITP EA - MCT
Help keep the forums tidy, if this has helped please mark it as an answer
My Blog
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