Remotely expand all volumes on a server that have available space.

Invoke-RemoteVolumeExpand.ps1

Function Invoke-RemoteVolumeExpand
{
    Param 
    (
        $Server
    )
    Function Invoke-VolumeExpand 
    {
        $Include     = "C|W|D|E|F"
        $Partitions = Get-Partition | Where-Object {$_.DriveLetter -Match $Include}
        Foreach ($Partition in $Partitions)
        {
            $Type = $Partition.Type
            $Letter = $Partition.DriveLetter
            If ($Type -eq "Basic")
            {
                $Size = $Partition | Get-PartitionSupportedSize
                $MaxSize = $Size.sizeMax
                $MinSize = $Size.sizeMin
                If ($MaxSize -ne $MinSize)
                {
                    Try 
                    {
                        Write-Output "$Server Expanding $Letter to $MaxSize"
                        $Partition | Resize-Partition -size $MaxSize -ErrorAction SilentlyContinue
                    }
                    Catch
                    {
                        Write-Output "$Server No further expansion possible for $Letter"
                    }
                }
            }
        }
    }
    Invoke-Command -ComputerName $Server -ScriptBlock ${Function:Invoke-VolumeExpand}
}