Difference between Windows Server 2008 and Windows Server 2008 R2 OS

Yesterday my senior asked me what is difference between Windows 2008 and Windows 2008 R2 servers.

Thought to share answer with you:

  • Windows Server 2008 is the same codebase bits as Vista. It is available in two flavors 32 bit and 64 bit versions.
  • Windows Server 2008 R2 is the same codebase bits as Windows 7 x64. It is only available in the 64 bit version.

Comparison..

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