Microsoft Windows Server [2008] R2 Enterprise x64
INFO: http://www.microsoft.com/windowsserver2008/en/us/default.aspx

Windows Server 2008 R2 builds on the award-winning foundation of Windows Server 2008, expanding existing technology and adding new features to enable organizations to increase the reliability and flexibility of their server infrastructures.

According to Microsoft, Windows Server 2008 is the "most reliable" server operating system ever created by them, and I want to spend a minute on it to lightly touch on security features in Windows Server 2008.

Windows Server 2008 R2 builds on the award-winning foundation of Windows Server 2008, expanding existing technology and adding new features to enable organizations to increase the reliability and flexibility of their server infrastructures.

Windows Server 2008 is the most advanced Windows Server operating system yet, designed to power the next-generation of networks, applications, andWeb services.

With Windows Server 2008 you can develop, deliver, and manage rich user experiences and applications, provide a highly secure network infrastructure, and increase technological efficiency and value within your organization.

SQL Server 2008 is a first–rate database management system. It offers more capability than any previous release of SQL Server. More than just a classic relational database management system, SQL Server 2008 includes exciting and powerful features that make it useful for everything from large corporate data warehouses to ad hoc departmental databases. You’ll find enhanced support for XML, new support for spatial data, transparent data encryption, a policy–based management system, and more.

Link

http://www.ziddu.com/download/10690774/BeginningSQLServer2005ForDevelopers.pdf.html

Windows HPC Server 2008 R2 and the Microsoft HPC Pack 2008 R2 software enables cluster based supercomputing based on x64 versions of Windows Server 2008 and Windows Server 2008 R2 as well as Windows 7 clients.

To make the most of Windows Server 2008 in production environments, you need a deep understanding of its technical details. However, accurate and reliable information is scarce, and even most skilled Windows professionals don?t know Windows Server 2008 as well as they should.