Exchange 2007 transition with lowest hardware cost

Hi,

We are looking for the lowest hardware cost setup to upgrade our exchange 2003 cluster (A/P) to exchange 2007.

I would like to know which clustering or HA scenarios to implement, i.e SCC or CCR.
We are planning to have 3 servers; two for Mailbox with DiskArray and one for Hub/CAS roles but seems the DiskArray is costing higher, and increasing our budget. So not sure to go with CCR (w/o SAN) or SCC.

Also we will be eliminating our Rightfax server, and having the fax services in Exchange 2007 UMS. Do we need any additional hardware and Different CAL licenses.

We need a scalable setup with lowest cost which provides HA; and can be expanded in the coming years.
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WrathyimpAsked:
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r_panosCommented:
The best solution (IMHO) for a scalable, HA architecture is to use CCR wittout SAN, only server local RAID, (even better go to Exchange 2010 and use CCR with DAG)

 Additional License:
For UMS is better to have a dedicated server and of course you need an additional license for that role.
 
 Client CALs:
 In order to "use" Unified Messaging, you need to purchase both a Standard and an Enterprise CAL, as Microsoft's licenses are "additive" (stack license versions to use all features) but you may already have them. In this case the answer is no, no additional CALs (if Standard and Enterprise are already purchased).
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r_panosCommented:
I forgot to say that is the best solution having budget considerations. Of course the limit od scalability can be the scalability of the local RAID if growth projection is done the wrong way.
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WrathyimpAuthor Commented:
r_panos,
Thanks for your reply.
understanding your solution:
I will need 2 servers for CCR implementation, with all exchange roles in one box, and same in replicated box. Have another box for UMS.

Also on UMS, do i need a ip-gateway device, which i understood by various articles. As we are only interested in the faxing services currently.

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r_panosCommented:
I hope you don't mind if I suggest you to go with Exchange 2010. CCR & DAG is realy flexible
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WrathyimpAuthor Commented:
Thanks again for your suggestion, but currently we have exchange 2007 licenses under our previous assurance licensing plan. So we dont need to get new exchange 2007 licenses. And if we go with exchange 2010, we will have to get exchange 2010 server licenses, which will increment on our budget.
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WrathyimpAuthor Commented:
Forgot to add, for exchange 2010, we will also be requiring Windows 2008 server licenses, with CALs.
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r_panosCommented:
No, if you have software assurance that allows you to upgrade versions.
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WrathyimpAuthor Commented:
r_panos,

Our assurance is over. I have checked the open license website, and we have only exchange 2007, no windows 2008 server.
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tigermattCommented:
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.
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