$mbserver = Get-MailboxServer
Foreach ($server in $mbserver) {
	"___________"
	""
	$server.name
	"___________"
	""
	"System                   Volume                             FreeSpace (GB)             PourcentFree"
	"------                   ------                             --------------             ------------"
 
	Get-WmiObject win32_volume -ComputerName $server.name | Sort-Object -Property Name |
	Format-Table -HideTableHeaders 	@{e={$_.systemname};n="" },
					@{e={$_.name};n="" },
					@{ e={[math]::round($_.FreeSpace/1GB,2)};n="" },
					@{ e={[math]::round(($_.FreeSpace*100)/$_.Capacity) };n="" }
	}