Hello everyone
I have a network infrastructure consisting of 3 sites, site A, site B, and site C. i have 2 domain controllers on every site, and the AD roles are on the primary domain controller on site A. On site A I have an Exchange 2013sp1 CU6.
I want to create a second Exchange on Site B, with the roles of mailbox (the exchange on Site A will be first DAG member and the Exchange on Site B will be the second member of the DAG) and CAS.
First question: Is my thought correct about installaing on the same server mailbox and CAS server?
Second question: how many DAG witnesses I need for the DAG? One per site, or one in general (for example located on site A)
Third question: When I am trying to perform “Setup.exe /PrepareSchema /IAcceptExchangeServerLicenseTerms” I receive the error
“ Setup encountered a problem while validating the state of Active Directory:
The Active Directory schema version (15303) is higher than Setup's version (15292). Therefore, PrepareSchema can't be executed. See the Exchange setup log for more information on this error. For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.AdInitErrorRule.aspx“
I tried to run the PrepareSchema from the ISO of Exchange 2013 SP1 and form the extracted content of Exchange 2013SP1 CU6 archive, but still receive the same error. Any ideas?
Thanks in advance.