Hi,
I am currently designing an Exchange 2010 infrastructure and have a question regarding Global Catalogs. I have a mixture of 2003/2008 32 bit and 64 bit Domain Controllers as below:
DC01 - 2003 SP2 Standard x86
DC02 - 2003 R2 SP2 Standard x64
DC03 - 2003 Standard SP2 x64
DC04 - 2003 Standard SP2 x86
DC05 - 2003 Standard SP2 x86
DC06 - 2003 Standard SP2 x86
DC07 - 2003 R2 Standard SP2 x86
DC08 - 2008 R2 Standard SP1 x64
DC09 - 2003 R2 Standard SP2 x64
DC10 - 2003 SP2 Standard SP2 x86
Their will be Exchange Servers (CAS/HT/Mailbox ) deployed in a Primary Datacentre and a DR Datacentre. DC02 is in the PDC and DC04 is in the DRDC. All DCs are GCs. With the mix above, are there any design considerations I need to take onboard as the mailbox calculator excel sheet needs me to specify x64 or x86 Global Catalog architecture. What is this in my case as I have a mix??
http://technet.microsoft.com/en-us/library/dd346701.aspx#Active