Redunancy for Windows 2003 Root DC

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From: Steave (steave_s_at_hotmail.com)
Date: 09/03/04 

Date: Fri, 3 Sep 2004 13:19:18 +0530

Dear All,

Scenerio :
We have implemented Single Forest single domain windows 2003 ADS in our
organisation, root DC located in central office Head office also has ADC, 3
branch offices have Additional domain controllers with globbal catalog,
branch offices are connected over leased line of 2 MB. Exchange 2003 main
server is at Central office and branch office have additional exchange
server for that office and OWA is provided for accessing the mail over
internet.

Problem :

When the DC goes down at Central location, after some time if a user tries
to access his mail using OWA he is not authenticated by ADC and the
authentication screen re-appears.

I am looking for building a redunancy for the DC which may fail due to
hardware or software issue, making it completely unavialable for a long
duration of time.

Thanks in advance for the response,

Steve.

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