if you decide to do say weekly full backups of your mailbox databases, if in a DAG set-up the same database is obviously replicated on 2 different servers, does it matter which copy you backup, or should you backup both, i.e. the copy on both servers?
and secondly, does the command "Get-MailboxDatabase -Status | Ft Name, Last*" - -detail any recent full backup of this mailbox, regardless of if it was backed up on server 1 or server 2, or if the mailbox is replicated on 2 servers, do you have to run this command twice (one per server)?