The biggest difference between Exchange 2007
and the previous version of the messaging system is that it requires 64-bit processors and a
64-bit version of Windows. You can install Exchange 2007 on Windows Server 2003 Standard
or Enterprise. Service Pack 1 for Exchange 2007 provides the capability to install Exchange
on a Windows Server 2008 system as well. If you plan to use UM, you will need to make sure
you have a compatible IP-PBX or a VoIP gateway that will provide connectivity between
Exchange and your PBX.
Server Roles
We previously discussed the new server role concept in Exchange Server 2007. You can install
Exchange 2007 as fi ve distinct roles, each designed to perform a specifi c function. Keep in mind
that server roles do not necessarily mean that separate physical servers are required for each role.
For example, you can deploy an Exchange server with both the Mailbox server role and the Client
Access server role. Let??™s briefl y cover each role and its purpose in an Exchange 2007 deployment.
BEST PRACTICES ACCORDING TO MICROSOFT
Before deploying Exchange 2007, you should be sure to properly plan for
capacity. No matter how many new features are implemented, end users still
want quick, easy access to their e-mail messages. If you don??™t properly plan
for capacity, you may see performance issues immediately after or during your
deployment. Luckily, Microsoft provides tools and guidance on how to
properly plan for Exchange capacity. Microsoft provides several deployment
documents that are freely downloadable from TechNet.
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