Home‎ > ‎Software‎ > ‎Microsoft‎ > ‎Active Directory‎ > ‎

2008 R2 Upgrade


Prep / Prerequisites 

  1. Give account the appropriate permissions (Domain Admins, Enterprise Admins, Schema Admins)
  2. Run adprep /forestprep or adprep32 /forestprep on existing forest schema master
  3. Wait for replication
  4. run adprep /domainprep /gpprep or adprep32 /domainprep /gpprep prep on each domain
  5. wait for replication
  6. prepare the forest for read only DCs if you want to use them adprep /rodcprep

Install Core Servers

  1. Install 2008 R2 Core
  2. run sconfig 
    1. configure IP
    2. install latest updates
    3. rename server / join to domain
  3. Install DNS
    1. ocsetup DNS-Server-Core-Role
    2. oclist |findstr /I DNS (validate DNS server role is installed)
  4. Install ADDS
    1. run dcpromo /unattend 
    2. Dcpromo /unattend /replicaOrnewDomain:replica
/replicaDomainDNSName:blah.local /ConfirmGC:yes
/username:blah\administrator /Password:*
/safeModeAdminPassword:P@ssw0rd1

Configure Time Server


Demote old DC

  1. Move any FSMO roles off of old DC http://www.petri.co.il/transferring_fsmo_roles.htm
    1. netdom query fsmo
  2. Run dcpromo and demote old 2003 DC
  3. Wait for replication
    1. repadmin /replsum /bysrc /bydest /sort:delta
  4. Change IP and Name of old DC so as not to cause a conflict later
  5. Disjoin server from domain and delete computer object
  6. Clean up any old AD objects for old DC servername
  7. Shutdown old DC

DHCP

Migrate DHCP from 2003 to 2008 R2

netsh dhcp server export C:\dhcp.txt all
netsh dhcp server import c:\dhcp.txt all 

Rename / IP New DC to old Name

  1. Change IP of new DC to use old DCs IP (sconfig)
  2. reboot
  3. make sure dns has updated ip for machine
  4. Rename New DC http://www.petri.co.il/rename-windows-server-2008-domain-controllers.htm http://technet.microsoft.com/en-us/library/cc794951(WS.10).aspx
    1. netdom computername <CurrentComputerNameFQDN> /add:<NewComputerNameFQDN>
    2. Wait for replication
      1. repadmin /replsum /bysrc /bydest /sort:delta
    3. netdom computername <CurrentComputerNameFQDN> /makeprimary:<NewComputerNameFQDN>
    4. Wait for replication
      1. repadmin /replsum /bysrc /bydest /sort:delta
      Reboot
    5. netdom computername <NewComputerNameFQDN> /remove:<CurrentComputerNameFQDN>
    6. Wait for replication
      1. repadmin /replsum /bysrc /bydest /sort:delta
    7. Update the FRS or DFS Replication Member Object
  5. Move any FSMO roles back to this DC http://www.petri.co.il/transferring_fsmo_roles.htm




Comments