QLogic 2500 Series 8Gb Fibre Channel Adapter of Choice in Microsoft Exchange Environments - Manual (Page 5)

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test results
the tests demonstrate that, as the quantity of users increased and more
LUNs were provisioned, the performance gains multiplied with the QLogic
8Gb Fibre Channel adapter, showing a multifold improvement over the
emulex 8Gb Fibre Channel adapter in scalability.
Fibre Channel Adapter Scalability in Modeling the
Microsoft Exchange I/O Load
the ramSan-325 contributes to very low latencies for i/O completions,
while the iOmeter tool contributes by driving large i/O loads through the
Fibre Channel adapter, thus satisfying both conditions for this test. iOmeter
replicated the Microsoft exchange i/O workload against the ramSan-325
and found that the iOPS performance of a QLogic Fibre Channel adapter
with a minimum workload of two outstanding i/Os was 57 percent better
than emulex’s Fibre Channel adapter (Figure 5). Similarly, the QLogic
adapter scaled better, achieving 35 percent more throughput than the
emulex Fibre Channel adapter (Figure 6).
Figure 5. IOPS Comparison
Figure 6. Throughput Comparison
Fibre Channel Adapter Scalability with Outstanding
I/O Workloads
Six tests were performed to assess Microsoft exchange workload
scalability. each test included an increase to the i/O workload; test one had
a workload of two outstanding i/Os, with increases through test six, which
had 64 outstanding i/Os.
the performance benefit of the QLogic 2500 Series 8Gb Fibre Channel
adapter is illustrated in Figure 7. When the outstanding i/O workloads were
increased, the QLogic 8Gb adapter scaled to meet the increased workloads.
in contrast, the emulex 8Gb Fibre Channel adapter could not sustain the
performance for the larger workloads.
Figure 7. Microsoft Exchange Workload Scalability
as identified, these tests show that the QLogic 8Gb adapter increased
iOPS and performance scaled as the workloads increased. in test four,
the emulex adapter also reached its maximum performance. however, in
tests five and six, which provided 32 and 64 outstanding i/O workloads
respectively, the emulex adapter’s performance dropped significantly. in
test six, at 64 outstanding i/Os, QLogic displayed a 35 percent performance
advantage over the emulex 8Gb adapter. the QLogic 2500 Series 8Gb
Fibre Channel adapter continues to provide scalability and performance as
demonstrated in the aforementioned benchmarks. iOmeter was configured
to place the maximum possible load on the QLogic 8Gb and emulex 8Gb
adapters. as customers purchase and integrate 8Gb adapter technology
into 8Gb SaNs and infrastructure, they expect optimum throughput and
iOPS, as demonstrated by the QLogic 2500 Series 8Gb adapter.
Summary and Conclusion
QLogic continues to be the industry leader in delivering high-performance
i/O solutions to data center customers.
QLogic FabricCache 10000 Series 8Gb Fibre Channel adapter
the iOPS and latency of the QLogic FabricCache 10000 Series 8Gb Fibre
Channel adapter are best-in-class and provide an unprecedented high
level of performance, superior scalability, and enhanced reliability that
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Light Workload
QLE2560
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