QLogic 2500 Series 8Gb Fibre Channel Adapter of Choice in Microsoft Hyper-V Environments - Manual (Page 4)

hSG-WP09004 PX2832003-00 rev. B 05/12 4
White PaPer
Virtual Machine Scalability
QLogic 2500 Series adapters meet the demand of today’s data center
(represented in this section of the white paper as virtual server workload).
the figures in this section illustrate how QLogic Fibre Channel adapter
performance scaled higher than emulex as the number of hyper-V VMs
increased from one to eight. the emulex 8Gb adapter scaled from one to
eight VMs, and demonstrated consistently lower performance (20 percent
less than the QLogic 2500 Series adapter). as the application scaled to
eight VMs, the QLogic 2500 Series adapter maintained high iOPS in support
of Microsoft’s hyper-V applications.
read iOPS
QLogic’s iOPS, when running eight VMs at a 512K block size, were higher
than emulex by 20 percent. as shown in Figure 5, emulex LPe12002 iOPS
peaked at 108,000K.
Figure 5. IOPS Comparison
as illustrated in Figure 6, emulex and QLogic were parity with one VM,
but as the workloads increased, emulex iOPS lagged behind QLogic’s
performance by up to 44 percent, while the QLogic 2500 Series adapter
continued to scale.
Figure 6. Scalability of Read IOPS
Write iOPS
Figure 7 shows that even though write iOPS was at parity at one VM adapter,
the overall performance of the LPe12002 averaged 34 percent less than
the QLogic 2500 Series adapter when the number of VMs scaled to eight.
Figure 7. Scalability of Write IOPS
the QLogic 2500 Series adapter continued to provide scalability and
performance as demonstrated in the aforementioned benchmarks.
iOmeter was configured to place the maximum possible load on the
QLogic and emulex 8Gb adapters in the Windows hyper-V environment.
as customers purchase and integrate 8Gb adapter technology into 8Gb
SaNs and infrastructure, they expect the optimum throughput and iOPS,
as demonstrated by the QLogic 2500 Series 8Gb Fibre Channel adapters.