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Virtualizing: Microsoft® Tier 1 Applications with VMware vSphere™ 4 by Hemant Gaidhani, Alex Fontana, Charles A. Windom Sr.

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32-bit or 64-bit Active Directory Domain Controllers?

With Microsoft Windows Server 2003 through Windows Server 2008, you have the option of deploying your Active Directory virtual machines on either the x86 (32-bit) or x64 (64-bit) Windows Server platforms. With the introduction of Windows Server 2008 R2, the x86 platforms are no longer available. This shift in platform allows greater scalability of the operating system and the applications running on it. The 64-bit platforms allow for more memory allocation and also allow you to trade I/O through the use of larger memory caches. This enhanced caching ability results in more information being held in memory and a lesser need to access that information from the disk subsystem. This allows for ...

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