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Powershell DiskMonitor Script

Hi there

I have a script that i found on the web (cant remember where). Ive used it and it does exactly what i want which is report back on disks that are belwo a specified %.

However Ive noticed that there are around a handfull of servers that it doesnt report on. The servers exist, can be pinged and the wmi-object commands work.

THe report emails out, so if if these servers are in a lkist with others the email still comes out just with those servers missing. If i run the script with only the servers that dont work then theres no email or any errors?

$users = "Email Address" # List of users to email your report to (separate by comma)
$fromemail = "Email Address"
$server = "SMTP Server" #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 = 5

#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
}

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Miguel Angel Perez Muñoz

Could you check execution policy on servers where work and where not work?

Do a get-executionpolicy and set same on servers where script is failing. Additionally, can search on powershell event viewer what is happening.

Colchester_Institute

ASKER

The policys are set as unrestricted on all servers......also no errors within event viewer?

ASKER CERTIFIED SOLUTION

Rajitha Chimmani

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Colchester_Institute

ASKER

I know the drives meet the condition set as its regarding space being less than 5% and they have drives that have space that is less than 5%

Im a bit confused on how to run

"$computers = get-content $list #grab the names of the servers/computers to check from the list.txt file.
[decimal]$thresholdspace = 5
$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)}}"

as no txt file specified?

Rajitha Chimmani

Ohh..yeah..my bad

$computers = get-content <path to txt file>

Colchester_Institute

ASKER

ok so if i run

$computers = get-content $list #grab the names of the servers/computers to check from the list.txt file.
[decimal]$thresholdspace = 5
$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)}}

nothing appears.

I then run

$tablefragment

and the server in the list appears

i then run

$tablefragment | Where-Object {$_.DriveType -eq 3 -and [decimal]$_.PercentFree -lt [decimal]$thresholdspace}

and get nothing

Colchester_Institute

ASKER

i think its the drive type....is there a way i can tell this to search for 1,2,3,4,5?

Joshua Grantom

you should be able to inclose the range in a bracket to use a regular expression like so.

$tablefragment | Where-Object {$_.DriveType -eq [1-5] -and [decimal]$_.PercentFree -lt [decimal]$thresholdspace}

Colchester_Institute

ASKER

Its ok the info i was given was wrong and the script is working, but thank you fo showing me how to break it down and test it.