#########################################################
#
# Disk space monitoring and reporting script
#
#########################################################

# Arguements
# ./DiskSpaceMonitor.ps1 "list.txt"
 
$users = "Alberto.igbinedion@ons.gov.uk" # List of users to email your report to (separate by comma)
$fromemail = "Alberto.igbinedion@ons.gov.uk"
$server = "FA1RVWAPXX398.Ons.Statistics.gov.uk" #enter your own SMTP server DNS name / IP address here
$list = $args[0] #This accepts the argument you add to your scheduled task for the list of servers. i.e. list.txt
$computers = get-content $list #grab the names of the servers/computers to check from the list.txt file.

# Set free disk space threshold below in percent (default at 10%)
[decimal]$thresholdspace = 10
 
#assemble together all of the free disk space data from the list of servers and only include it if the percentage free is below the threshold we set above.
$tableFragment= Get-WMIObject  -ComputerName $computers Win32_LogicalDisk `
| select __SERVER, DriveType, VolumeName, Name, @{n='Size (Gb)' ;e={"{0:n2}" -f ($_.size/1gb)}},@{n='FreeSpace (Gb)';e={"{0:n2}" -f ($_.freespace/1gb)}}, @{n='PercentFree';e={"{0:n2}" -f ($_.freespace/$_.size*100)}} `
| Where-Object {$_.DriveType -eq 3 -and [decimal]$_.PercentFree -lt [decimal]$thresholdspace} `
| ConvertTo-HTML -fragment


 
# assemble the HTML for our body of the email report.
$HTMLmessage = @"
<font color=""black"" face=""Arial, Verdana"" size=""3"">
<u><b>Disk Space Storage Report</b></u>
<br>This report was generated because the drive(s) listed below have less than $thresholdspace % free space. Drives above this threshold will not be listed.
<br>
<style type=""text/css"">body{font: .8em ""Lucida Grande"", Tahoma, Arial, Helvetica, sans-serif;}
ol{margin:0;padding: 0 1.5em;}
table{color:#FFF;background:#C00;border-collapse:collapse;width:647px;border:5px solid #900;}
thead{}
thead th{padding:1em 1em .5em;border-bottom:1px dotted #FFF;font-size:120%;text-align:left;}
thead tr{}
td{padding:.5em 1em;}
tfoot{}
tfoot td{padding-bottom:1.5em;}
tfoot tr{}
#middle{background-color:#900;}
</style>
<body BGCOLOR=""white"">
$tableFragment
</body>
"@
 
# Set up a regex search and match to look for any <td> tags in our body. These would only be present if the script above found disks below the threshold of free space.
# We use this regex matching method to determine whether or not we should send the email and report.
$regexsubject = $HTMLmessage
$regex = [regex] '(?im)<td>'
 
# if there was any row at all, send the email
if ($regex.IsMatch($regexsubject)) {
                        send-mailmessage -from $fromemail -to $users -subject "Disk Space Monitoring Report" -BodyAsHTML -body $HTMLmessage -priority High -smtpServer $server
}
 
# End of Script



<#

Finally, to run this script you will need a text file, created in your script folder, that it uses as an argument. 
Call this list.txt and place it in your script folder. In the list.txt file, list each of the servers on your domain that need to be checked in the script, 
one server name per line. To run the script, create a batch file called start.bat, and use the following as its content:

powershell.exe -command "& 'C:\My Scripts\diskspace.ps1' 'C:\My Scripts\list.txt' "


To Schedule enter this in the schedule Action Pane


PowerShell


./DiskSpaceMonitor.ps1 "list.txt"


D:\Users\igbena_admin\Downloads\Scripts

#>