Exchange 2010 : View Mailbox Database Size
Use the following Exchnage Shell command to view the size of ALL Mailbox Databases within your Exchange Organisation.
Get-MailboxDatabase -Status | select ServerName,Name,DatabaseSize
You can limit this to particular Databases using the command below, this will return sizing information on Mailbox Databases which have a name starting with “UK” – this could be modified to FR for example if all of your Mailbox Databases in France started with “FR” :
Get-MailboxDatabase “UK*” -Status | select ServerName,Name,DatabaseSize