Disaster recovery for my Win 2003 AD

We have a Win 2003 server that is our AD Server and DHCP server. It is also our shared file server. All our users login to their win XP machines through this Domain Controller.

If my Domain Controller goes offline, what are my options? My users will not be able to access their PC's or shared files. What are the best practices?
AS_SSURAsked:
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BilBagsCommented:
Cached credentials will allow them to login but if they are using DHCP, they won't have any internet access if the server goes down and there is no secondary DHCP server of some sort.  You could use offline files but truly not the best option.  There are a number of disaster recovery solutions available and you could always setup another server and replicate data between the two.
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AS_SSURAuthor Commented:
Is replication the best option?
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Encrypted1024Commented:
There are a number of ways to go. Have a sollid backup is the number one rule. That will take care of disaster ecovery. Disaster prevention or mitigation is what most people are looking for.
Having two domain controllers / infrastructure servers is alway a good idea. All of your domain data will be automatically replicated. You could use something like DFS to replicate your data.
Most people in a small network find this a cost prohibitive solution which takes me back to poit A - Have a solid backup.
 
 
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BilBagsCommented:
It depends on the downtime limit you are wanting to reach and of course, budget.  I have used DFS (distributed file system) in Windows 2003 R2 to replicate data to another server.  However, I have also used bare metal backup/recovery and restored a server in under 2 hours.  

You could also look into offsite backup solutions wth standby server options.  In case of complete failure, they can have your system back online in minutes b/c it basically has a VM image on the local NAS device.  The pricing is based on the amount of data & options chosen for recovery times, etc. after purchasing the NAS box of choice.  Zenith has a BDR NAS... probably the best option for you for quick uptime in case of disaster.
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iimtiazCommented:
Make another DC a replica of the first one. If you want to build ADC without backup then dont use the /adv switch with dcrpomo.
http://technet.microsoft.com/en-us/library/cc781792(WS.10).aspx
 For DHCP its depend on you users if you have huge amount of machines on DHCP so i would recommend you to have DHCP 80/20 rule or use DHCP clustering.
http://www.networkworld.com/community/node/28080
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/2003_Server/Q_21571267.html 
 
 

DHCP2003.doc
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AS_SSURAuthor Commented:
Good answers, but
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