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Backup/Restore DHCP

Posted on 2014-02-12
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Last Modified: 2014-02-14
Hi,

I'm looking for an easy way to be able to export/restore our DHCP.  The DHCP server is a Domain Controller so Active Directory is on there along with DNS as well.  In case we have an incident where DHCP scopes/entries have been deleted, we would like an easy way to be able to restore them if needed.

Please let me know step by step on how to perform these tasks whether it be through a script or third party app.

Thanks
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Question by:Lumious
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Paul MacDonald earned 500 total points
ID: 39854589
Using clues in your question, I presume you're using Microsoft DHCP.  Let me start off by saying you should have two servers offering DHCP on your network, each with a portion of your overall scope.  This will provide some fault tolerance in the event you lose a server.

That said, here are a few Microsoft articles that give you the lowdown on backing up and restoring Microsoft's DHCP database:
Back Up and Restore the DHCP Database
More About DHCP Backup and Restore

...and...
Understand and Deploy DHCP Failover
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by:Lumious
ID: 39855289
Hi,

Yes we are using Microsoft DHCP and have 2 DHCP servers already.  My main concern was if we lost our DHCP configurations, replications propagated throughout to all DHCP servers somehow, then we would have to restore somehow.  Yes we could restore from a VM Full Backup but that takes hours sometimes an isn't ideal.  Doing a quick restore of the DHCP from a backup would take less time.

So I was looking for a quick and easy solution on first taking a backup of DHCP and then being able to restore it pretty quickly if needed.  I read the article on "Back Up and Restore the DHCP Database", pretty easy and easy to understand.

I was thinking though, is there somehow an automated way to perform the backups like on a scheduled basis?  I saw that it's supposedly set to every 60 minutes to do a DHCP backup to the default location specified, but is there a way to have a task scheduled to do the backup and store it in a certain location every "X" hours?

Thanks
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Expert Comment

by:Paul MacDonald
ID: 39855924
If you have redundant DHCP servers, backups are almost moot.  Losing a server means rebuilding or restoring from backup.  By the time that's done your DHCP information may be out of date already, and the "missing" hosts have already drawn IP information from the redundant DHCP server, depending on how long your leases are.

If you're imaging your servers, that itself is probably more than adequate.
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