active directory migration to 2008 r2

7/27/2019 Active Directory Migration to 2008 R2

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INDEX

About Windows Server 2008 R2

What's new in Windows Server 2008 R2?

Windows Server 2008 R2 Editions & System Requirements

Windows Server 2008 R2 Features Matrix

Windows Server 2008 R2 Hardware Requirements

Transitioning a Windows 2003 R2 Domain to Windows 2008 R2

Prepare Active Directory environment

Functional Levels

Verification of Existing Active Directory

Additional Domain Controller Installation & Configuration

Transferring FSMO roles, IP Address and Global Catalog (GC)

DHCP Server Migration

Demoted the old Domain Controller

Conclusion


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About Windows Server 2008 R2:

Windows Server 2008 R2 is the most advanced Windows Server operating system yet, designed

to power the next generation of networks, applications, and web services. With this operating

system you can develop, deliver, and manage rich user experiences and applications, provide a

highly secure network infrastructure, and increase technological efficiency and value within

your organization.

Whats new in Windows Server 2008 R2?

The Windows Server 2008 R2 operating system includes changes to earlier version of Windows

Server features and technologies that help improve the security of computers running Windows

Server 2008 R2, increase productivity, and reduce administrative overhead.

The following changes and new features are available

Active Directory Certificate Services

Active Directory Domain Services

AppLocker

Biometrics

Device Management and Installation

Distributed File System

DNS

Failover Clusters

File Server Resource Manager

Group Policy

Hyper-V (Virtualization)

Microsoft iSCSI initiator

Microsoft Multipath I/O

Network Access Protection (NAP)


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Network Policy Server(NPS)

Networking

Performance and Reliability Monitoring

Print and Document Services

Remote Desktop Services

Server Core Installation Option

Server Manager

Service Accounts

Services for NFS

Smart Cards

User Account Control

Web Server (IIS) Role (IIS7)

Windows Deployment

Windows Deployment Services

Windows PowerShell

Windows PowerShell, Cmdlets for Roles and Features

Windows Search, Browse, and Organization

Windows Security Auditing

Windows Server Backup

Other changes

Active Directory Rights Management Services

Core services and fundamentals

Windows Update Stand-alone installer

TCP chimney


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Background Intelligent Transfer Service (BITS)

New server migration tools and migration guides

Media Audio, Voice Encoder and Decoder.

Windows Server 2008 R2 Editions & System Requirements:

Before embarking on the installation of Windows Server 2008 R2, it is important to first gain an

understanding of the different editions available and the corresponding hardware

requirements. It is also important to be aware of the upgrade options available with each

edition.

1. Windows Server 2008 R2 Foundation Edition

2. Windows Server 2008 R2 Standard Edition

3. Windows Server 2008 R2 Enterprise Edition

4. Windows Server 2008 R2 Datacenter Edition

5. Windows Web Server 2008 R2

Windows Server 2008 R2 Features Matrix

I have mentioned the features matrix of Windows Server 2008 R2 editions as below

Feature Enterprise Datacenter Standard Itanium Web Foundation

Active

Directory

Certificate

Services

Yes Yes Limited No No Limited

Active

DirectoryDomain

Services

Yes Yes Yes No No Yes

Active

Directory

Federation

Services

Yes Yes No No No No


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Active

Directory

Lightweight

Directory

Services


ActiveDirectory

Rights

Management

Services


Application

ServerYes Yes Yes Yes No Yes

DHCP Server Yes Yes Yes No No Yes

DNS Server Yes Yes Yes No Yes Yes

Fax Server Yes Yes Yes No No Yes

File Services Yes Yes Limited No No Limited

Hyper-V Yes Yes Yes No No No

Network

Policy and

Access

Services


Print and

Document

Services


Remote

DesktopServices


Web Services

(IIS)Yes Yes Yes Yes Yes Yes

Windows

Deployment

Services


Windows

Server Update

Services

(WSUS)



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Windows Server 2008 R2 Hardware Requirements

The following below details provides an overview of Microsofts recommended minimum

hardware requirements.

Category Minimum/Recommended Requirements

Processor - Minimum: 1.4 GHz -x64 processor

Recommended: 2GHz or faster

Note: For Itanium based systems an Intel Itanium 2 processor is required.

Memory - Minimum: 512 MB RAM

Recommended: 2GB RAM or greater

Disk Space - Minimum: 10GB

Recommended: 40GB or greater

Note: Systems with RAM in excess of 16GB will require greater amounts

of disk space to accommodate paging, hibernation, and dump files.

Drive - DVD-ROM drive

Display &

Peripherals - Super VGA or greater-resolution monitor (800x600)

Keyboard

Microsoft Mouse - Compatible pointing device.

As with the specified system requirements for all Windows systems, it is best to aim for the

recommended values rather than the Minimum values to ensure acceptable levels of

performance.


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Reason to transition

I feel transitioning is the middle road between the two other ways to migrate to Windows

Server 2008 R2:

Restructuring means filling a new Active Directory from scratch In-place upgrading means you're stuck with the same hardware and limited to certain

upgrade paths

Transitioning means you get to keep your current Active Directory lay-out, contents,

group policies and schema. Transitioning also means moving to new machines and this

can be dimensioned to last another three to five years without trouble.

Transitioning is good when:

You worked hard to get your Active Directory in the shape it's in.

Your servers are faced with aging.

In-place upgrading leaves you with an undesired outcome

(for instance Server Core or Enterprise Domain Controllers)

You need a chance to place your Active Directory files on different partitions/volumes.

Steps to transition

Transitioning to Windows Server 2008 R2 Domain Controllers consists of the following steps:

Before begin we must consider the below points

Avoid common mistakes Plan your server lifecycle

Access your readiness

Map out your 64bit transition

Review the considerations for upgrading

Backups

Documentation

Communication


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Prepare Active Directory environment

Before you can begin the addition of Windows Server 2008 R2 into your existing 2003 (R2)

Active Directory environment, first have to prepare the Active Directory.

Microsoft provides two tools to facilitate this preparation. Depending on your current ActiveDirectory environment you need to use either one of them.

adprep.exe Use adprep.exe to prepare your Active Directory environment for Windows

Server 2008 R2 on 64bit (x64) Domain Controllers.

adprep32.exe Use adprep.exe to prepare your Active Directory environment for Windows

Server 2008 R2 on 32bit (x86) Domain Controllers.

You need to run the following commands on the following Domain Controllers in your current

Active Directory environment:

Command Domain Controller

1. Adprep.exe /forestprep Schema Master

Adprep32.exe /forestprep

2. Adprep.exe /domainprep Infrastructure Master

Adprep32.exe /domainprep

3. Adprep.exe /domainprep /gpprep Infrastructure Master

Adprep32.exe /domainprep /gpprep

After preparing your Active Directory for Windows Server 2008 R2 be sure to check the process

adprep.log file. Allow sufficient time for proper replication to all Domain controllers and

confirm the all of your Domain controllers report Schema version 47.


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Type C and Enter


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Verification of Active Directory preparation by using ADSIEDIT.MSC


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Schema Version is 47

Domain Preparation needs to be done in Child domain (Fis.fichtner.local)


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Functional Levels

Raised the Domain functional level to Windows Server 2003 in Fis.fichtner.local domain


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Raised domain functional level - Windows Server 2003


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Raised the Forest Functional level to Windows Server 2003


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Verification of Existing Active Directory


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Additional Domain Controller Installation:

Once completed the Windows Server 2008 R2 OS installation, we have verified the following

details as mentioned below

1. Windows Server 2008 R2 with latest Service Pack2. Windows Server 2008 R2 OS latest updates.

3. Domain membership

4. Host name and IP address configuration.

Added the IP configuration as mentioned below


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Verified the Host name and IP address details in Server 2008 R2


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Open the Server Manager in Server 2008 R2 and added the Active Directory Domain Service

role as refer below screenshots.


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Promoted the server as an additional domain controller by dcpromo


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DSRM Password - P@ssw0rd


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Restarted the server once completion of Active Directory configuration. Configured the DNS

with Active Directory integrated zone and verified the DNS.


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Transferring FSMO roles and Global Catalog (GC)

We have promoted the Server 2008 R2 as a Primary Domain Controller and Global catalog for

domain Fichtner. Local


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Verified the server 2008 r2 has FSMO roles and GC and changed IP address 172.16.1.1 to new

DC (2008 R2).

Restart the all domain controllers one by one.


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DHCP Server

Migrated the DHCP Server from 2003 R2 to 2008 R2 domain controller as below details

1. Taken the DHCP server 2003 R2 backup and moved it into centralized location.

2. Stop the DHCP server service in Server 2003 R2.3. Installed and configured the DHCP server role in Windows Server 2008 R2

4. Unauthorized the DHCP scope in Server 2008 R2

5. Imported the 2003 R2 DHCP backup into Server 2008 R2.

6. Start the DHCP server service in Server 2008 R2

7. Verified everything is working fine.


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Verified the clients IP address has assigned from DHCP server which have hosted in Server 2008R2.


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Demoted the old Domain Controller

This is last step after upgrade Windows Server 2008 R2 Active Directory environment, Demote

the old Active Directory 2003 R2 server.

To demote the older DC please refer the below screenshots.


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New login Password is P@ssw0rd


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Restart the server once the removed process has done.


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Conclusion:

Finally, we have upgraded your Active Directory environment to Windows Server 2008 R2

Standard. We have verified the Active Directory, DNS, DHCP and replication between all domain

controllers without any issue.

S.N Host Name IP Address Description

1 FI-SERVER10 172.16.1.1 Primary DC, DNS, DHCP, FSMO & GC.

2 FI-SERVER07 172.16.1.17 Backup DC, DNS

active directory migration to 2008 r2

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