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adam900331
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Restore all DC from backup

Post by adam900331 »

Hy!

I would like to test the DC restore process. I know that there are two methods: non-authoritative and authoritative restore. I tried the non-authoritative restore mode and works perfectly. I simulate that one of the DC failed from the 4 DCs.

What happen when lost all of 4 DCs? What is the correct order? Are there any step by step documentation whic is related to the authoritativa restore mode?

I read this article: https://www.veeam.com/kb2119

Are the registry keys modify related to the all 4 DCs? Or only, the one? I am confused a little bit.

Thanks.
foggy
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Re: Restore all DC from backup

Post by foggy » 1 person likes this post

The article mentions that you have to force one of the DCs to become authoritative for SYSVOL (the first one restored) so that they can start replicating.
adam900331
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Re: Restore all DC from backup

Post by adam900331 »

But what is your suggestion? Should I have to recover firstly the DC which own the all FSMO role?
foggy
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Re: Restore all DC from backup

Post by foggy » 1 person likes this post

My suggestion is to follow the KB instructions. You can restore two DCs at once (to avoid wasting time waiting for them to contact replication partners), force one of them to become authoritative for SYSVOL and then restore other DCs.
adam900331
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Re: Restore all DC from backup

Post by adam900331 »

Ok, but if I restore two DC at once, and select one to become for SYSVOL, do I have to anything with the second restored DC? Or it will replicate all data from the firstly restored DC?

After the 4 DCs restore should I remove the created registry key?
foggy
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Re: Restore all DC from backup

Post by foggy »

After the first one is properly restored, it should start replicating normally with the others.
adam900331
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Re: Restore all DC from backup

Post by adam900331 »

And if the one of the DC is a phisycal which own the all FSMO, depends the restore order? Should i start the restore with the phisycal DC?
foggy
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Re: Restore all DC from backup

Post by foggy »

If I get it right, it doesn't matter much, just keep it in mind if you need to seize the roles or temporarily bypass initial synchronization requirements using the mentioned registry value.
adam900331
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Re: Restore all DC from backup

Post by adam900331 »

Ok, thanks.
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