On Jan 7, 12:57 pm, Andrew Armstrong <
phpla...@gmail.com> wrote:
> They are both special - admin is the only database you can perform
> some commands on to for example lock the database for sync.
>
> The local database (from my understanding) is never replicated between
> servers in a replica set (ie, the contents stay local to that replica
> server and are never propagated).
>