Quickly Find Exchange Database Usage

Here is a Powershell script you can use to quickly determine the total amount of space taken up by all of your Exchange database files (edb files) on an Exchange server.  I’d like to note that this may not necessarily be a 100% accurate representation but is a great way to get a ballpark number without having to add the numbers up yourself, manually.

$dbs = Get-MailboxDatabase -Status

foreach($db in $dbs) {

$edbsize = $db.DatabaseSize.Tobytes()
$totalsize += $edbsize


Write-Host $totalsize

I noticed that I had no way to calculate the total amount of space being used by my Exchange databases the other day.  And even after scouring through teh Googles I was unable to find what I was looking for quickly so I wrote this script up quick to fix that problem.  Just copy the previous bit of code into a ps1 file with notepad and execute the script from your EMS.  It is a super simple way to iterate through all the databases, save their sizes to a variable and then spit that variable out when it is complete.

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Josh Reichardt

Josh is the creator of this blog, a system administrator and a contributor to other technology communities such as /r/sysadmin and Ops School. You can also find him on Twitter and Facebook.