Software

Exchange 2007: Upgrade, migration, or transition?

The type of Exchange 2007 implementation you undertake depends on your existing solution.

When it comes time for your organization to start a possible Exchange 2007 implementation, the type of implementation you undertake depends on your existing solution. Microsoft uses pretty specific terminology when it comes to implementing Exchange 2007. I'll go over each of the possibilities in this tip.

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Upgrade: Upgrade is a pretty general term that describes the overall process of replacing a legacy e-mail system with Exchange 2007. Normally, Microsoft uses the term "upgrade" to describe an in-place update scenario during which a newer version of a product is installed over the top of an existing product. However, this is not possible with Exchange 2007. Exchange 2007 can be installed only on a 64-bit operating system running atop 64-bit hardware. Older versions of the product are 32-bit only, so there is some element of mutual exclusivity that takes place. That said, you will see Microsoft use the term "upgrade" very loosely when it comes to Exchange 2007.

Migration: Microsoft considers a migration to be the scenario in which you move to Exchange 2007 from a completely different system, such as Notes, or from Exchange 5.5. Exchange 2007 does not support any scenarios in which Exchange 5.5 coexistence is required.

Transition: The process of moving from Exchange 2000 or Exchange 2003 to Exchange 2007 is considered to be a transition. In this scenario, Exchange 2007 is installed on new hardware in the existing Exchange organization and user mailboxes are moved from the legacy system to the new servers.

The terminology differences might not seem that significant, but will definitely help as you make your way through the Exchange 2007 documentation.

6 comments
rasilon
rasilon

You said: "Exchange 2007 does not support any scenarios in which Exchange 5.5 coexistence is required." My understanding is that Exchange 2007 and 5.5 coexistence is not allowed at all... Hank Arnold

hillie48317
hillie48317

I have seen that using the Quest migration soft will allow you to have Exch 5.5 and Exch 2007 work together during the migration process. The only down fall is that the price is a bit high which makes it a little bit unattractive as a disposal software.

RNR1995
RNR1995

You can migrate from 5.5 to 2007

rahmad
rahmad

How if you are running Exchange 5.5 and want to migrate to Exchange 2007? Do you have to migrate to Exchance 2000 or 2003 first in order to have all mail boxes moved into new mail server? (that's not kindda solution one would like to implement) I am hoping there is some tool available to migrate to Exchange 2007 directly from Exchange 5.5. If no well that's ridiculous.

jmorris6
jmorris6

You have to either upgrade 5.5 to a 2000/2003 platform first and then transition to 2007 or do a raw migration from 5.5 to 2007. This way does not retain any user attributes assigned to the mailbox.

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