According to Microsoft's Roadmap, the official version of the next-generation server operating system, Windows Server 2008 R2, will be released in 2010. Although Microsoft R2 win Server 2008 as the next-generation server operating system after win 2008, it can be seen from the named numbering that this is not a "from Win2003 to Win2008" product replacement, but a win-2008 product upgrade.
Windows Server Roadmap
Although R2 and win 2008 in the same vein, features and features are based on win 2008, but R2 still has a number of attractive new features, such as R2 will no longer have a 32-bit version, will be completely based on 64-bit, the number of support logical processors increased significantly, from win 2008 of 64 to a maximum of 256 In addition, in Microsoft virtualization Hyper-V, as well as power management characteristics and PowerShell features have been enhanced.
IIS 7.5 is also a very bright spot in R2, and we know that the biggest feature of the IIS version of Win 2008 is 7.0,iis 7, which is modular, and IIS 7 is split from the core layer into more than 40 different functional modules, Users can customize the modules needed to install according to the needs of the Web server, which can make IIS more streamlined, reduce unnecessary components to reduce the attack surface, and increase the security and availability of IIS.