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Exchange 5.5 upgrade or new install?

By daniel ·
We have recently upgraded our DCs to Win2K w/ active directory, and we are now ready to upgrade our Exchange 5.5 running on NT4 server to Exchange 2000 on Windows 2K server. We have had not encountered any issues with our Exchange 5.5 server, which is handling approx. 125 users. Would you recommend upgrading the existing server to Windows 2000 server, and then installing W2K exchange (which would be the easiest to implement) or to start fresh with a new W2K install w/ exchange 2K and then migrate user mailboxes over?

What are your experiences with the exchange migration upgrade or new install?

Thanks,
Dan

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by compgirlfhredi In reply to Exchange 5.5 upgrade or n ...

Better reading:

http://techupdate.zdnet.com/devhead/stories/articles/0,4413,2412072,00.html

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by compgirlfhredi In reply to

Visit http://www.exinternals.com and peruse the install and upgrade white paper. It has all the best practices. Good luck.
Remember there should be in the Getting Started Guide in the box that goes into complete step-by-step instructions as to how and when you should run /forestprep and /domainprep. When installing Exchange 2000 on a member server you need to have an AD first. Then from the member server you can run /forstprep and /domainprep. You can then proceed with the setup. The most common thing missed is that you will need to have NNTP installed first.
You CAN run Exchange 2000 on your W2K DC, but you would want to follow best practices for securing that server such as firewall practices etc but there should be no problems with Exchange 2000 running on the DC. You could install Exchange 5.5 onto Windows server and THEN upgrade to Exchange 2000 later. There are explicit instructions found at http://www.microsoft.com/exchange/techinfo/deployment/55/Upgrade2000qi.asp
Although the best way to get an NTServer
Exchange 5.5sp3 to Win2k Server/Exchange2000 is a single server that is running as a PDC as well you can upgrade it directly. Upgrade to Windows 2000 creating an AD. Then install the ADC. Then proceed with the upgrade to Exchange 2000

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by techtonik In reply to Exchange 5.5 upgrade or n ...

Due to the issues that I have had with the significant changes made in mailbox security between exchange 5.5 and exchange 2000 (mainly AD as opposed to internal 5.5 security), a clean start is usually the best policy. The mail migrate tool is your best bet from what I have found. Importing user's existing mail from PST's after a clean start is usually the less problematic solution as the mail is backed up, and there is less chance of back end foul-ups.

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by daniel In reply to Exchange 5.5 upgrade or n ...

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