64-Bit Citrix Presentation Server PDF Manual

Deploying 64-bit technology can allow organizations to significantly reduce the number of servers required to support their user base by enabling increased density and resource utilization. This article discusses the advantages of running the 64-bit version of Citrix Presentation Server software for Microsoft Windows Server 2003 x64 Editions on Dell PowerEdge servers.

The limitations of 32-bit technology, particularly its restrictions on the amount of memory that can be directly addressed, can prevent so software from takingfull advantage of powerful multi-core processors. The introduction of 64-bit hardware and software has helped reduce or eliminate these limits, enabling significant scalability and performance benefits. The 64-bit version of Citrix Presentation Server 4 is designed to take advantage of these benefits on multi-core servers running Microsoft Windows Server 2003 x64 Editions. The capabilities of the 64-bit version of Citrix Presentation Server 4 along with Windows Server 2003 x64 editions can enable a compelling return on investment while helping reduce total cost of ownership through data center server consolidation.

Enterprises can now take advantage of servers with four or more processor cores, such as Dell PowerEdge 2950 servers, in 64-bit Citrix Presentation Server 4 environments. Advantages of 64-bit technology In 32-bit Microsoft Windows® operating systems, memory is limited to the 32-bit address space, thus limiting the amount of virtual memory that can be directly addressed to 4 GB. This 4 GB is divided into two equal parts: 2 GB for application processes and 2 GB for the OS, which is used for the kernel memory, system cache, and drivers.

A key advantage of using the 64-bit version of Citrix Presentation Server 4 with each of the Windows Server 2003 x64 Editions is the increased virtual address space compared to the 32-bit versions: the Windows Server 2003 x64 Editions can address 16 TB of virtual memory, divided into 8 TB for application processes and 8 TB for the OS (see Figure 1). This increase in available user and kernel memory enables Citrix Presentation Server to be highly scalable and avoid the limitations of 32-bit architectures.

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December 6, 2009 | Posted in Processor, Server, Software

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