Exchange 2003 & Exchange 2010 coexistence question

[Theo2k]

Hello everyone,

I have a client with exchange 2003 that would like to upgrade to exchange 2010. The client would like to have both systems (exchange 2003 and 2010)coexist on his network for couple months. I went ahead and builded a virtual windows 2008 R2 server with exchange 2010 typical setup roles. What is the best topology or setup to have users access their old and new OWA system? Do I need a front-end server?

Any help would be great.

Thank you,

Theo

 

[58sniper]

Can't see why you'd need months of coexistence. You don't mention how big the org is.

http://technet.microsoft.com/en-us/library/aa998186.aspx

http://www.simple-talk.com/sysadmin/exchange/upgrade-exchange-2003-to-exchange-2010/

http://www.exchangeinbox.com/article.aspx?i=152

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

http://www.ucblogs.net/blogs/exchange/

 

[Theo2k]

Hi Pat and thank you for your respond.

My client has approximattely 140 users. For legal purposes they don't want to move to quickly into their new system due to huge pst files they have. I was able to setup my new exchange 2010 and coexist now with exchange 2003. My problem now is redirection from my 2010 OWA to 2003 OWA server. When I login with credentials for a mailbox user that exists on 2010 everyhting is fine. Trying login at the same portal with an account that resides on the 2003 exchange i get the following messageYour request couldn't be completed because no server with the correct security settings was found to handle the request. If the problem continues, contact your helpdesk).

Thanks again,

Theo

 

[58sniper]

Interesting that you mention .pst files and legal purposes. The fact that .pst files exist brings up a LOT of legal issues.

You need to look at the coexistence sections of the MS documentation, including the certificate requirements.

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

http://www.ucblogs.net/blogs/exchange/

 

[ShackDaddy]

If I were you, barring use of any 3rd party software, I'd load those .pst files into the Exchange 2010 mailbox databases and then look into using archive stores for the users.

Dave Shackelford MVP
ThirdTier.net
TrainSignal.com

 

[58sniper]

I would emphatically agree.

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

http://www.ucblogs.net/blogs/exchange/