Maintenance on PDC Emulator

Hello

Running Exchange 2007/2010 and AD 2003. One domain/forest.

We need to change some hardware on our PDC Emulator this weekend. The server will be down for about 30mins.

What is the best course of action, to move the role to another server or just take the hit and leave it off?

Secondly, what effect does a down PDC Emulator have on the other DC's in the domain?

Finally, the only application we need running over the weekend is email (Exchange and Blackberry). Will have the PDC offline have an effect on Exchange? Is it worth restarting anything once the PDC is up again (e.g. AD Topology service)?
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bruce_77Asked:
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Mike KlineCommented:
If it is just for 30 minutes I'd probably not transfer it.  Microsoft's Brian Puhl has a good overview that i use a lot

http://blogs.technet.com/b/bpuhl/archive/2005/12/07/415761.aspx

Having said that there are those that always transfer the roles "just in case".  I personally don't but if someone wants to transfer them before maintenance then then I won't argue with them.

You don't need to restart anything but make sure you have other global catalogs available.

Thanks

Mike
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bruce_77Author Commented:
Thanks

Here is an interesting article I was reading:

http://blogs.technet.com/b/askds/archive/2011/03/22/what-does-dcdiag-actually-do.aspx

It concerns DCDIAG, but I came across this part

"DCLocator:

This test validates that DCLocator queries return the five “capabilities” that any DC must know of to operate correctly. "

So it seems to be saying that other DC's must know of the PDC in order to function correctly? Is this to say that if there is an issue with the PDC, then other DC's may not function 100%?
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Mike KlineCommented:
user authentication should work, there are some things that won't work....this link was also given in the technet forums

http://blogs.technet.com/b/askds/archive/2011/02/25/friday-mail-sack-xxxxxxxxxxxx.aspx#pdceauth

Thanks

Mike
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