component. The POP3 service has been removed from Internet Information Services 7.0. The SMTP (Simple Mail Transfer Protocol) service is not available as a server role in IIS 7.0, it is a server feature managed through IIS 6.0. NNTP (Network News Transfer Protocol) is no longer part of Internet Information Services 7.0. ReadyBoost, which is available in Windows Vista, is not supported in Windows Server 2008. Editions Most editions of Windows Server 2008 are available in x86-64 and IA-32 variants. These editions come in two DVDs: One for installing the IA-32 variant and the other for x64. Windows Server 2008 for Itanium-based Systems supports IA-64 processors. The IA-64 variant is optimized for high-workload scenarios like database servers and Line of Business (LOB) applications. As such, it is not optimized for use as a file server or media server. Windows Server 2008 is the last 32-bit Windows server operating system. Editions of Windows Server 2008 include: Windows Server 2008 Foundation (codenamed "Lima"; x86-64) for OEMs only Windows Server 2008 Standard (IA-32 and x86-64) Windows Server 2008 Enterprise (IA-32 and x86-64) Windows Server 2008 Datacenter (IA-32 and x86-64) Windows Server 2008 for Itanium-based Systems (IA-64) Windows Web Server 2008 (IA-32 and x86-64) Windows HPC Server 2008 (codenamed "Socrates"; replacing Windows Compute Cluster Server) Windows Storage Server 2008 (codenamed "Magni"; IA-32 and x86-64) Windows Small Business Server 2008 (codenamed "Cougar"; x86-64) for small businesses Windows Essential Business Server 2008 (codenamed "Centro"; x86-64) for medium-sized businesses - this edition was discontinued in 2010. The Microsoft Imagine program, known as DreamSpark at the time, used to provide verified students with the 32-bit variant of Windows Server 2008 Standard Edition, but the version has since then been removed. However, they still provide the R2 release. The Server Core feature is available in the Web, Standard, Enterprise and Datacenter editions. Windows Server 2008 Foundation Released on May 21, 2009. System requirements System requirements for Windows Server 2008 are as follows: Scalability Windows Server 2008 supports the following maximum hardware specifications: Updates Windows Server 2008 shares most of its updates with Windows Vista, given that the operating systems share a codebase. A workaround using the Microsoft Update Catalog allowed the installation of updates for Windows Server 2008 on Windows Vista, adding nearly 3 years of security updates to that operating system (Support for Windows Vista ended on April 11, 2017, while support for Windows Server 2008 ended on