Sum Columns Using Powershell - powershell

Question

I have written the following PowerShell script for getting disk space information for servers in our environment.
$servers = Get-Content E:\POC.txt
$array = #()
foreach($server in $servers){
$sysinfo = Get-WmiObject Win32_Volume -ComputerName $server
for($i = 0;$i -lt $sysinfo.Count; $i++){
$sname = $sysinfo[$i].SystemName
$servername = $server
$label = $sysinfo[$i].Label
if(($label) -and (!($label.Contains("FILLER")))){
write-host "Processing $label from $server"
$name = $sysinfo[$i].Name
$capacity = [math]::round(($sysinfo[$i].Capacity/1GB),2)
$fspace = [math]::round(($sysinfo[$i].FreeSpace/1GB),2)
$sused = [math]::round((($sysinfo[$i].Capacity - $sysinfo[$i].FreeSpace)/1GB),2)
$fspacepercent = [math]::Round((($sysinfo[$i].FreeSpace*100)/$sysinfo[$i].Capacity),2)
$obj = New-Object PSObject
$obj | Add-Member -MemberType NoteProperty -Name "SystemName" -Value $sname
$obj | Add-Member -MemberType NoteProperty -Name "ServerName" -Value $server
$obj | Add-Member -MemberType NoteProperty -Name "Label" -Value $label
$obj | Add-Member -MemberType NoteProperty -Name "Name" -Value $name
$obj | Add-Member -MemberType NoteProperty -Name "Capacity(GB)" -Value $capacity
$obj | Add-Member -MemberType NoteProperty -Name "FreeSpace(GB)" -Value $fspace
$obj | Add-Member -MemberType NoteProperty -Name "Used(GB)" -Value $sused
$obj | Add-Member -MemberType NoteProperty -Name "FreeSpace%" -Value $fspacepercent
$array += $obj
}
}
$array += write-output " "
$totalSize = ($array | Measure-Object 'Capacity(GB)' -Sum).Sum
$array += $totalsize
$array += write-output " "
}
$filename = "E:\VolumeReport.csv"
$array | Export-CSV $filename -NoTypeInformation
One additional requirement here is to get the sum of the columns for Capacity, Size and Freespace for each server. I tried using Measure-Object but no success.
No values are getting outputted here. Just blank. Please look into this and kindly assist.

Answer 1

Let try this on for size shall we.
$servers = Get-Content E:\POC.txt
$propertyOrdered = "SystemName","ServerName","Label","Name","Capacity(GB)","FreeSpace(GB)","Used(GB)","FreeSpace%"
$filename = "C:\temp\VolumeReport.csv"
('"{0}"' -f ($propertyOrdered -join '","')) | Set-Content $filename
foreach($server in $servers){
$sysinfo = Get-WmiObject Win32_Volume -ComputerName $server
$serverDetails = #()
for($i = 0;$i -lt $sysinfo.Count; $i++){
$sname = $sysinfo[$i].SystemName
$servername = $server
$label = $sysinfo[$i].Label
if(($label) -and (!($label.Contains("FILLER")))){
write-host "Processing $label from $server"
$name = $sysinfo[$i].Name
$capacity = [math]::round(($sysinfo[$i].Capacity/1GB),2)
$fspace = [math]::round(($sysinfo[$i].FreeSpace/1GB),2)
$sused = [math]::round((($sysinfo[$i].Capacity - $sysinfo[$i].FreeSpace)/1GB),2)
$fspacepercent = [math]::Round((($sysinfo[$i].FreeSpace*100)/$sysinfo[$i].Capacity),2)
$props = #{
"SystemName" = $sname
"ServerName" = $server
"Label" = $label
"Name" = $name
"Capacity(GB)" = $capacity
"FreeSpace(GB)" = $fspace
"Used(GB)" = $sused
"FreeSpace%" = $fspacepercent
}
# Build this server object.
$serverDetails += New-Object PSObject -Property $props
}
}
# Output current details to file.
$serverDetails | Select $propertyOrdered | ConvertTo-Csv -NoTypeInformation | Select-Object -Skip 1 | Add-Content $filename
#Calculate Totals and append to file.
$totals = '"","","","Totals",{0},{1},{2},""' -f ($serverDetails | Measure-Object -Property "Capacity(GB)" -Sum).Sum,
($serverDetails | Measure-Object -Property "FreeSpace(GB)" -Sum).Sum,
($serverDetails | Measure-Object -Property "Used(GB)" -Sum).Sum
$totals | Add-Content $filename
}
Part of the issue here is that you were mixing object output and static string output which most likely would have been holding you back. I tidied up the object generation in a way that should be 2.0 compliant. Not that what you were going was wrong in anyway but this is a little more pleasing to the eye then all the Add-Members
I removed $array since it did not have a place anymore since the logic here is constantly output data to the output file as supposed to storing it temporarily.
For every $server we build an array of disk information in the variable $serverDetails. Once all the disks have been calculated (using your formulas still) we then create a totals line. You were not really clear on how you wanted your output so I guessed. The above code should net output like the following. (It looks a lot nicer in Excel or in a csv aware reader. )
"SystemName","ServerName","Label","Name","Capacity(GB)","FreeSpace(GB)","Used(GB)","FreeSpace%"
"server01","server01","System Reserved","\\?\Volume{24dbe945-3ea6-11e0-afbd-806e6f6e6963}\","0.1","0.07","0.03","71.85"
"","","","Totals",0.1,0.07,0.03,""
"server02","server02","System Reserved","\\?\Volume{24dbe945-3ea6-11e0-afbd-806e6f6e6963}\","0.1","0.07","0.03","69.27"
"server02","server02","images","I:\","1953.12","152.1","1801.02","7.79"
"server02","server02","Data","E:\","79.76","34.59","45.18","43.36"
"","","","Totals",2032.98,186.76,1846.23,""