User guide

The Cisco UCS M71KR-Q provides both 10 Gigabit Ethernet and 4-Gbps Fibre Channel functions using drivers

from QLogic, providing:

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Risk mitigation through compatibility with current QLogic adapter-based SAN environments and drivers

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Reduced TCO through consolidation of LAN and SAN traffic over the same mezzanine card and fabric,

reducing the overall number of network interface cards (NICs), HBAs, cables, and switches

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Integrated management with Cisco UCS Manager

Figure 15. Cisco UCS M71KR-Q Architecture

3.2.12 Cisco Extended Memory Architecture

Modern CPUs with built-in memory controllers support a limited number of memory channels and slots per CPU.

The need for virtualization software to run multiple OS instances demands large amounts of memory, and that,

combined with the fact that CPU performance is outstripping memory performance, can lead to memory

bottlenecks. Even some traditional non-virtualized applications demand large amounts of main memory: database

management system performance can be improved dramatically by caching database tables in memory, and

modeling and simulation software can benefit from caching more of the problem state in memory.

To obtain a larger memory footprint, most IT organizations are forced to upgrade to larger, more expensive, four-

socket servers. CPUs that can support four-socket configurations are typically more expensive, require more

power, and entail higher licensing costs. Cisco Extended Memory Technology expands the capabilities of CPU-

based memory controllers by logically changing the geometry of main memory while still using standard DDR3

memory. This technology makes every four DIMM slots in the expanded memory blade server appear to the

CPU‘s memory controller as a single DIMM that is four times the size (Figure 16). For example, using standard

DDR3 DIMMs, the technology makes four 8-GB DIMMS appear as a single 32-GB DIMM.

This patented technology allows the CPU to access more industry-standard memory than ever before in a two-

socket server:

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For memory-intensive environments, data centers can better balance the ratio of CPU power to memory

and install larger amounts of memory without having the expense and energy waste of moving to four-

socket servers simply to have a larger memory capacity. With a larger main-memory footprint, CPU