Forum Discussion
How to shutdown all server exchange in site DC that not effect DAG
Hi Tien Ngo Thanh,
The best practice is that you have 2 Active Directory Sites and in each AD Site you need to have at least a Global Catalog. If you have that you can shutdown on Datacenter and you you have Exchange with replica in place it will move that. You can also see the DAC mode on Exchange to see if is correct configuration within this scenario.
When you startup an Exchange environment you will need at least on Global Catalog up in the AD site that the exchange nodes resides.
Hi
all active directory has global catalog enable .but current five role FSMO in DC , when shutdown i think i will change all FSMO to DR site
DAG configure
DatacenterActivationMode : DagOnly
AllowCrossSiteRpcClientAccess : False
WitnessServer : cas01.test.com
WitnessDirectory : E:\DagWitnessDirectory
Best Regards,
Thanks
Hi Tien Ngo Thanh,
About DAC, please read this https://docs.microsoft.com/en-us/exchange/high-availability/database-availability-groups/dac-mode?view=exchserver-2019
AllowCrossSiteRpcClientAccess, must be enabled.
About Witness you must have one per datacenter.
Best Regards,
NunoAriasSilva : with current exchange DAG both site the same subnet and the same site in Active Directory then should enable AllowCrossSiteRpcClientAccess ?
about Witness so i must install one more cas in DR and set alterwitness to CAS in DR ?
actual all server exchange the same site only difference about physical location because the same subnet .
Hi Tien Ngo Thanh,
As my first post, the best practice is to have separate AD sites and IP Addresses and have Global Catalogs on each site and have one mote Witness on DR.
Best regards
