Getting mailbox size info is very different from the simple list view in previous Exchange versions. However if you take some time and use the Powershell/Console, you can extract all the information you need.
Here is a niffty command that you can use to generate a report that will give you some statistics on your users mailbox sizes. It requests information on mailboxes greater than 1 MB and outputs the data to a txt file. You can however modify it with other various shell commands.
Get-MailboxStatistics |where {$_.TotalItemSize -gt 1MB} | sort $_.TotalItemSize |FT DisplayName,ItemCount,TotalItemSize >c:\size.txt
You can also get such information as well as many other with exchange reporting solution called message stats.
This tool reports on a wide range of exchange operations like, for example, users and administrators activity, mailbox usage and configuartion, message sizes and quotas, distribution lists, public folders and more.
With this tool you can also calculate usage statistics and measure exchange total cost of ownership with estimating per-message cost.
Posted by: Maurice Bradsher | 02/16/2009 at 12:13 PM