RE: 2K to 2K3 In Place or Rebuild
From: Rebecca Chen [MSFT] (v-rebc_at_online.microsoft.com)
Date: 12/09/04
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Date: Thu, 09 Dec 2004 10:33:28 GMT
Hi R.G,
See inline:
>I'm trying to figure out whether to do an in-place upgrade from 2000 to
>2003, or to rebuild. There are only 8 DC's, and I'd really like to do an
>in-place, but I kind of need to sell this to my management.
>Does anyone know of a document that shows Pros/Cons of each, and why
someone
>would do one over the other?
Choosing migration or upgrade is always a question. Actually, it depends on
your real network environment.
Choosing to Upgrade or to Perform a Migration
Deciding whether to upgrade or to perform a migration to a new computer is
an important decision. Upgrading refers to leaving the existing Windows NT
Server 4.0 (with Service Pack 5 or later) operating system on your computer
and updating it through installing the new Windows Server 2003 operating
system. A migration refers to installing a product in the Windows Server
family on a volume with no previous operating system.
Reasons to Upgrade
Especially for small organizations, the ease of an upgrade rather than a
new installation can make sense. Generally, with an upgrade, configuration
is simpler, and your existing users, settings, groups, rights, and
permissions are retained. Also, with an upgrade, you do not need to
re-install files and applications.
As with any major change to the hard disk, you should back up the system
before beginning an upgrade.
Reference Points
" For more information on upgrading, please go to Microsoft TechNet
at
http://www.microsoft.com/technet/ and use the search tool for the topic
"Operating systems from which you can upgrade."
" If you are upgrading in a domain that includes domain controllers
running
Windows NT Server 4.0, please go to Microsoft TechNet at
http://www.microsoft.com/technet/ and use the search tool for the topic
"Upgrades in a Domain Containing Windows NT 4.0 Domain Controllers."
" If you want to upgrade and then use the same applications as
before, be
sure to review applications information in Relnotes.htm (in the \Docs
folder on the Setup CD). Also, for the most recent information on
compatible applications for products in the Windows Server 2003 family, see
the Windows Server Catalog at
http://www.microsoft.com/windows/catalog/server.
Reasons to Migrate
There are good reasons to migrate rather than upgrade-especially when
dealing with large organizations. If you want to practice careful
configuration management, for example, for a server where high availability
is important, you might want to perform a new installation on that server
instead of an upgrade. This is especially true for servers on which the
operating system has been upgraded several times in the past.
For more details, please refer to the following article:
White Paper: Migrating Windows NT Server 4.0 Domains to Windows Server 2003
Active Directory
http://support.microsoft.com/default.aspx?scid=kb;en-us;818623
Why Upgrade from Windows NT 4.0 to Windows Server 2003
http://www.microsoft.com/windowsserver2003/evaluation/whyupgrade/nt4/nt4town
et.mspx
Overview of Upgrading Windows NT 4.0 Domains
http://www.microsoft.com/resources/documentation/WindowsServ/2003/all/deploy
guide/en-us/Default.asp?url=/resources/documentation/windowsserv/2003/all/de
ployguide/en-us/dssbe_upnt_yewf.asp
>I'm also interested in if there are any kernel/core changes to the OS that
could >cause problems after doing an in-place upgrade (things to be aware
of)?
Although I am not a exchange guy, if you have Exchange 2k installed and
want to also migrate to Exchange 2k3, you need to refer to the following KB
to expand the schema:
Windows Server 2003 adprep /forestprep Command Causes Mangled Attributes in
Windows 2000 Forests That Contain Exchange 2000 Servers
http://support.microsoft.com/default.aspx?scid=kb;en-us;314649
Any update, let us get in touch!
Best regards,
Rebecca Chen
MCSE2000 MCDBA CCNA
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
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- Next message: Jado: "Remove Server from Active Directory"
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