MOSS 2007同時支援在32 bit與64 bit環境的安裝,可是如果能夠在64 bit環境中安裝,所得到的效能可以大幅提升,一方面是可以使用的RAM較多,另一方面在記憶體存取時速度也會較佳,這個在WFE(Web Front End)角色上特別明顯.如果你必須使用32 bit環境安裝MOSS 2007,產品部門提供了以下的建議:
If you must run 32-bit Web servers, follow these recommendations:
Do not use the /3gb switch for 32-bit systems. If you are running 32-bit Web servers, we recommend that you do not use the /3gb switch in Windows Server 2003 to change the 2 gigabytes (GB) of virtual address space to 3 GB for all user mode processes. We recommend against using the /3gb switch because most SharePoint site traffic involves sending large amounts of data through the operating system. Therefore, leaving only 1 GB of address space for the operating system can destabilize the computer. For more information, see the following article in the Microsoft Knowledge Base: The Windows Server 2003 /3GB switch is not supported in Windows SharePoint Services 2.0 or in later versions or in SharePoint Portal Server 2003 SP2 or in later versions (http://go.microsoft.com/fwlink/?LinkId=105919&clcid=0x409).
Mixing 32-bit and 64-bit servers can affect load balancing. You can run an environment that has some Web servers running the 32-bit version of Office SharePoint Server 2007 and others running the 64-bit version. However, there is a risk that the 32-bit Web servers may become overloaded if your network load balancer is configured to use a less-intelligent model as such round robin. We recommend that you configure your load balancer to manage distribution based on load.