Exchange Server 2007 Installation Marathon Day 2 - Why does it only support 64bit OS?

Basically 4GB memory limitation is the bottleneck of 32bit OS. When the hardware become cheaper and cheaper, also users with faster network speed (are you still using dial-up internet?) need faster response from server side.
So in an enterprise environment with thousands clients, 4 GB RAM is much less than neccesary for spooling, scanning virus and filtering spams.

The future of OA under Micorsoft Windows Server and Excahnge Server

"Unified messaging is significant in Exchange 2007 because it is the foundation that
Microsoft will be using to provide unified communications across their entire product
line. Over the next few years, Microsoft will more tightly integrate instant messaging
(IM), voice over IP (VoIP) telephone integration, videoconferencing, data conferencing,
and so forth into a complete, centralized communications system. Today, Microsoft has
several new products they have introduced to the marketplace, including Office
Communications Server 2007, Office Roundtable, and SharePoint 2007, that integrate
technologies together in a unified communications backbone. Exchange 2007 is the first
system that is core to the unified communications strategy that Microsoft is setting
forward because Exchange is the point of connection for email, contacts, remote access,
mobile access, and, now, voice and fax communications."


-- <> Sams

Exchange Server 2007 Installation Marathon Day 1 - Windows Server 2003, AD and IIS

* Hardware Platform:
Core 2 Duo E6320 CPU,
Intel P965 Motherboard,
1GB DDRII 667 RAM,
250GB SATAII HDD,
Intergraded LAN/VGA

* Software Environment:
Windows XP Pro x64 (Host Operating Sytem)
VMWare Server 1.0.2
Windows Server 2003 x64 R2 (Guest Operating system)
Exchange Server 2007


Step 1 - AD, IIS installation

Computer Name: Server01
Domain Name: CONTOSO (just as same as in MSCE training course)
IP Address: xxx.xxx.xxx.8/24
Default Gateway: xxx.xxx.xxx.2 (which is controlled by VMWare to rout your network traffic to internet.)
Primary DNS Server: xxx.xxx.xxx.8 (Which is WinServer 2003, but firstly it isn't been configured. To setting this IP as primary DNS is to avoid error messenge during installing Exchange 2007)
Secondary DNS Server: xxx.xxx.xxx.2 (which is the real one)

After you install AD on your server, you need to raise the Domain functional level to "Windows 2000 native"

Step 2 - Exchange 2007 Installation

The instructuction of Exchange 2007 Installation Wizzard is very clear. Only thing I did is just follow it until get it done.