Getting mailbox database sizes
I’m not too sure why this isn’t exposed through the Exchange cmdlets, but here we go.
Run with Get-DatabaseSize -Database DatabaseName
and it will return the database name, server, and database size in megabytes.
EDIT: well, it turns out you can just use Get-MailboxDatabase -Database DatabaseName -Status | select name,server,databasesize
. Rookie error on my part.