Re: Taking Domain Controller Offline

Yes, on the new DHCP make sure that the clients get both DNS, the one that
is going down and the other that is online to serv client queries, the
problem is the duplicated address because if the new DHCP isn't aware of the
ip addresses that were attrib to those clients, to prevent that make sure
that the DHCP doesn't lease the same range of address that the other did,
also make sure that you've other roles needed by the clients available, like
GC, WINS, etc... Note: if you've clients that use ADUC they may expirience
errors trying to open the mmc snapin, that is normal because the mmc is
trying to get the last DC that the mmc saved in their console, all they have
to do is to point to an existing online DC the same applies to other mmc
consoles like gpmc.msc, etc...

--
I hope that the information above helps you.
Have a Nice day.

Jorge Silva
MCSE, MVP Directory Services
"Julio" <Julio@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:C21E1479-9E0B-410B-AF02-A976772D81DF@xxxxxxxxxxxxxxxx
Besides bringing another DHCP server online, is there anything else that
can
be done?

"Jorge Silva" wrote:

you probably need a second DHCP srtver assuming that the DHCP lease won't
cover the amount of time that the DC will be down.

--
I hope that the information above helps you.
Have a Nice day.

Jorge Silva
MCSE, MVP Directory Services
"Julio" <Julio@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:4A5FDC0B-03BA-4DDD-A118-C80730A719DA@xxxxxxxxxxxxxxxx
The users are using DHCP and the server that I will be taking offline
is
also
their DHCP server.

"Jorge Silva" wrote:

they need to have an additonal DNS server configured under their NIC
properties

--
I hope that the information above helps you.
Have a Nice day.

Jorge Silva
MCSE, MVP Directory Services
"Julio" <Julio@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:F2F26BF8-541B-4FF9-9BE2-DD59F6906E8C@xxxxxxxxxxxxxxxx
There is no alternate DNS server at that site. How would I verify
that
all
users are using the alternate DNS server prior to taking down the
DC?

"Jorge Silva" wrote:

Hi
Make sure that the DC isn't offline more than your forest
tombstonelifetime.
Do you have an additonal DNS server on that Site1? If yes the users
and
assuiming that the computer accounts are using that alternate DNS,
they
should be automatically redirected to the alternative site in order
to
authenticate with that additiobal DC. If NO make sure that the
users
are
using any other available DNS server so tehey can get authenticated
with
that DC.
Other concers would be having a GC available especially if you have
Apps
that need a Gc like Exchange.
--
I hope that the information above helps you.
Have a Nice day.

Jorge Silva
MCSE, MVP Directory Services
"Julio" <Julio@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:2FD58AE3-64E0-4893-ADD0-AB652004F7C9@xxxxxxxxxxxxxxxx
I will be needing to take one of our servers (2003 DC) offline
temporarely
(dc is located at site 1). How do I point all of the users (that
are
located
at site 1) logon authentications to go to our other site (site 2)
temporarely
until the server at site 1 comes back up? Both servers are GC
servers
and
are
located at separate sites and are on different subnets.
Please advice.

Thanks

Julio











.

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