user manual

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Note:
For more information on best practices associated with virtualization, refer
to the HP white paper, “Best practices for deploying Citrix XenApp on
XenServer.”
Conclusions
When planning an x64 HP SBC environment, you should select servers equipped with multi-core
processors to help maximize scalability. If your budget allows, consider the fastest processors, the
most cores, and largest cache; if your objective is to reduce overall power consumption and you are
prepared to accept a small performance penalty, use low-power processors.
Memory is an important factor in the x64 environment: while an x64 platform can utilize more RAM,
it also has a higher minimum RAM requirement than an x86 platform. Since a system that is not
memory-starved is less likely to experience disk I/O bottlenecks, HP recommends adding as much
RAM as your budget permits.
For optimal performance, configure FBWC for 100% write. Consider using 15,000 rpm SAS drives.
Virtualized server
Do not oversubscribe vCPUs – after a certain point, additional vCPUs can degrade performance.
Determine the optimal server configuration for your particular workload: How many VMs? How many
vCPUs? How much memory? Significant testing may be required.
Consider virtualizing later x86 platforms to take advantage of improvements made to processors,
memory, and I/O. You may experience dramatic scalability enhancements.