Folder sizes using Powershell

Hi
 I am trying to get folder sizes of shared  folders that are located on network drives. However when l use the Powershell script attached. I only get the first  3 folder sizes within each shared folder that l run the script on. I would like  the script to include all the folders in the shared  folder. I would appreciate your assistance.
$a = Get-Date
$Year = $a.Year
$Month = $a.Month
$Day = $a.Day
$report = "c:\Scripts\Folder Size $Year$Month$Day.txt"

"Date: " + $a.ToShortDateString()  | Out-File -FilePath $report
"Time: " + $a.ToShortTimeString()  | Out-File -Append -FilePath $report


Out-File -Append -FilePath $report -InputObject "----------------------------------------------------------------" 
Out-File -Append -FilePath $report -InputObject "---                 Start of Script                          ---" 
Out-File -Append -FilePath $report -InputObject "----------------------------------------------------------------" 

Function RootScan
  {
  #List all root folders in the drive
  $folders = Get-ChildItem -Path $mainfolder | ? { $_.psiscontainer -and $_.FullName -notmatch $exclude}
  #$folders = Get-ChildItem -Path $mainfolder -exclude $exclude | ? { $_.psiscontainer -and $_.FullName}
  Out-File -Append -FilePath $report -InputObject "Start Root"
  ForEach ($folder in $folders)
  {
    $subFolderItems = (Get-ChildItem $folder.FullName -Recurse | Measure-Object -property length -sum)
    $folder.FullName + " -- " + "{0:N2}" -f ($subFolderItems.sum / 1MB) + " MB" | Out-File -Append -FilePath $report
  }
Out-File -Append -FilePath $report -InputObject "Finished Root"
}

Function SubScan
{
#List all Group folders in the GroupDrive
ForEach ($folderGroup in $Group)
{
  #Write-Host "This is FolderGroup: $folderGroup"
  $foldersGroup = Get-ChildItem -Path $foldergroup | ? { $_.psiscontainer -and $_.FullName}
  $SubNum = $SubNum + 1
  Out-File -Append -FilePath $report -InputObject "Start $SubNum"

    ForEach ($child in $foldersGroup)
    {
    #Write-Host "This is FoldersGroup: $child"
    $subFolderItems = (Get-ChildItem $child.FullName -Recurse | Measure-Object -property length -sum)
    $Child.FullName + " -- " + "{0:N2}" -f ($subFolderItems.sum / 1MB) + " MB" | Out-File -Append -FilePath $report
    }
  
  Out-File -Append -FilePath $report -InputObject "Finished $SubNum"
}}

$mainfolder = "M:\small"
$SubNum = 2
#Enter Directories Requiring Individual Subfolder Count
#$Group = "C:\Temp\"
#Enter Directories Excluded from Root Count
$exclude = "Users Data", "Test"
RootScan
#SubScan

#$mainfolder = "c:\Temp"
#$SubNum = 1
#Enter Directories Requiring Individual Subfolder Count
#$Group = "c:\Temp"
#Enter Directories Excluded from Root Count
#$exclude = "1"
#RootScan
#SubScan

Out-File -Append -FilePath $report -InputObject  "----------------------------------------------------------------"
Out-File -Append -FilePath $report -InputObject  "---                 End of Script                            ---"
Out-File -Append -FilePath $report -InputObject  "----------------------------------------------------------------"

$a = Get-Date
"Date: " + $a.ToShortDateString()  | Out-File -Append -FilePath $report
"Time: " + $a.ToShortTimeString()  | Out-File -Append -FilePath $report

#Get-ChildItem | Get-Member -MemberType Property

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Phil MapfumoInfrastructure EngineerAsked:
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QlemoBatchelor, Developer and EE Topic AdvisorCommented:
The script is working fine. Maybe there are some permission issues stopping the script from further processing each root folder?
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Phil MapfumoInfrastructure EngineerAuthor Commented:
All the permissons are similar on all the drives  and folders but the result is the same when l run the script on any of them l can only get the results for the first 3 folders. So doubt that can be the issue, however the drives are SAN drives  mapped to the server via ICSI and the permisson are inherited from the root folder
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QlemoBatchelor, Developer and EE Topic AdvisorCommented:
Try the script first with a local folder having more than three subfolders. I've done local and remote and it always returned more than 3 subfolders.
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Phil MapfumoInfrastructure EngineerAuthor Commented:
Hi Qlemo
 You could be right, I  have seen the results of one of the drives on the server  and it has listed all the folders for the root folder so that  means the sctipt is working, so l will re-examine the permissons on the drives that have failed.
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Phil MapfumoInfrastructure EngineerAuthor Commented:
Hi Qlemo
I have changed the permissions and it has worked, thanks. However l have a new question, l can understand if it is not possible to answer it and l will be happy to close the question. Is it possible to have the script run and scan 3 folders are the same time or am l asking for too much?
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QlemoBatchelor, Developer and EE Topic AdvisorCommented:
That would be some work, because that script is not written in a way easy to change to other requirements. E.g. the logging is done both outside and inside of the function, it uses global vars instead of parameters etc. pp.
I've removed anything unnecessary, and improved the function call so you can use it multiple times:
$report = "c:\Temp\EE\Folder Size $(get-date -format "yyyyMMdd").txt"

@"
----------------------------------------------------------------
---     Start of Script: $(get-date)
----------------------------------------------------------------

"@ | Out-File -Append -FilePath $report

Function global:RootScan($mainfolder, $exclude)
{
  #List all root folders in the drive
  $folders = Get-ChildItem -Path $mainfolder | ? { $_.psiscontainer -and $_.FullName -notmatch $exclude}
  Write-Output "-- Start Root of $mainfolder"
  ForEach ($folder in $folders)
  {
    $subFolderItems = (Get-ChildItem $folder.FullName -Recurse | Measure-Object -property length -sum).Sum
    Write-Output ($folder.FullName + " -- " + "{0:N2}" -f ($subFolderItems / 1MB) + " MB")
  }
  Write-Output "-- Finished Root of $mainfolder"
}

Start-Job -ScriptBlock (get-command RootScan).ScriptBlock -ArgumentList "M:\Small"       , @("Users Data", "Test") | Out-Null
Start-Job -ScriptBlock (get-command RootScan).ScriptBlock -ArgumentList "N:\Even Smaller", @("User Profiles")      | Out-Null
# and so on

while ($job = Get-Job | Wait-Job -Any)
{
  Receive-Job $job | Out-File -Append $report
  Remove-Job $job
}

@"
----------------------------------------------------------------
---                 End of Script: $(get-date)
----------------------------------------------------------------
"@ | Out-File -Append $report

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QlemoBatchelor, Developer and EE Topic AdvisorCommented:
Though, it would be much better to generate objects instead of strings, and export as CSV ...
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Phil MapfumoInfrastructure EngineerAuthor Commented:
Great thank for your help Qlemo much appreciated!
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Phil MapfumoInfrastructure EngineerAuthor Commented:
The expert was able to provide an additional solution that was not part of the original question, great guy!
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