Determining the average mailbox size per database

PowerShell is very flexible and gives you the ability to generate very detailed reports. When generating mailbox database statistics, we can utilize data returned from multiple cmdlets provided by the Exchange Management Shell. This recipe will show you an example of this, and you will learn how to calculate the average mailbox size per database using PowerShell.

How to do it...

To determine the average mailbox size for a given database, use the following one-liner:

    Get-MailboxStatistics -Database DB1 | 
      ForEach-Object {$_.TotalItemSize.Value.ToMB()} | 
        Measure-Object -Average | 
          Select-Object -ExpandProperty Average 

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