Re: Do we need to add a new AD site?

Brian Day

Do you plan to have your users authenticate against the 4th DC or are you
wanting to segregate it for DR purposes only? With a 10G connection between
the physical sites there is probably going to be minimal gain in making a
new site.

One thing you could/should consider for planning around that 10G link is
either;

a) Make the 4th dc a GC to ensure users at that site can logon if there is
an outage with the 10G link

b) Leave it a DC and enable Universal Group Caching for the existing site so
users will not need a GC for logon if they happen to hit that DC for
authentication and the 10G link goes down. UGC will happen ever 12 hours (or
is it 6?) for up to 500 groups at a time.



"burgessb" <> wrote in message
news:...
> Currently have one site with 3 DCs all on the same subnet at our
> datacenter.
> At our main hospital we have redundant 10G connections back to the
> datacenter
> and we are adding a 4th domain controller there in a small a recovery
> computer room. The recovery room is on a separate VLAN from the datacenter
> and is actually closer to many of our users. We will be installing
> terminal
> servers and a small SANin this recovery site until we get a real DR site.
>
> Should I create a new Site in AD for this DC? If so why? Thanks.