Server 2012 R2 DHCP to Server 2019 Migration

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NamlessShelter-6097 asked Mar 24, '22 DSPatrick commented Mar 28, '22

Server 2012 R2 DHCP to Server 2019 Migration

Dear Friends,

I am really confused about DHCP migration.

Now we have two old DC servers on 2012 R2 servers, both is running DHCP, they are replicated to each other. Is there a Master DHCP server?

Now I would like set up new server 2019 and transfer FSMO role to the new box. SHould I set up a DHCP replica on server 2019? And remove DHCP one by one on old Server 2012 R2? or I should back up DHCP, and set up a new DHCP service on the server 2019 and import to DHCP?

Thanks a lot,
ML

windows-dhcp-dns windows-server-migration

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Answer 1 · 2022-03-28T01:57:50.987Z

DSPatrick answered Mar 28, '22 DSPatrick commented Mar 28, '22

Yes, sounds good, you could also export beforehand (for backup) and before beginning the work.
https://docs.microsoft.com/en-us/powershell/module/dhcpserver/export-dhcpserver?view=windowsserver2022-ps

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NamlessShelter-6097 · Mar 28 at 02:00 AM

To be in safe side, I will do cutover migration: Export and Import.

Thanks
ML

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DSPatrick NamlessShelter-6097 · Mar 28 at 02:04 AM

Sounds good, you're welcome.

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Answer 2 · 2022-03-24T13:49:20.253Z

DSPatrick answered Mar 24, '22 NamlessShelter-6097 commented Mar 28, '22

Some ideas here.
https://docs.microsoft.com/en-us/answers/questions/267547/migration-dhcp-failover.html

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NamlessShelter-6097 · Mar 24 at 10:01 PM

So I should:

Break failover with 2nd SRV 2012R2. (keep conf in 1st SRV2012r2)
Build failover between 1st 2012R2 and 1 2019
Break failover between 2019 and 2012R2. (keep conf in 2019)
Build failover between both 2019 servers.

So, should I just keep building fail over and cut the replica?

Thanks
ML

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DSPatrick NamlessShelter-6097 · Mar 24 at 10:32 PM

That's what I would do, yes.

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NamlessShelter-6097 DSPatrick · Mar 25 at 01:14 AM

One More thing DHCp servers, there is no "Master" DHCP server right?

Thanks

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NamlessShelter-6097 DSPatrick · Mar 25 at 01:17 AM

Also, cut binding, can I directly remove DHCP service role on a server 2012 R2 box?

Thanks

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