Qlogic QLA2500 Comparison Chart

Power Efficiency of QLogic 8Gb HBAs
QLogic's 8Gb Adapters Demonstrate Highest Performance per Watt
industry Challenges
technology advancements such as multi-core processors and
the transition to high-density servers (blade servers) allow
significantly more processing power in a much smaller space.
However, these advancements have created new challenges for
it managers, who now need to provide adequate energy and
cooling for the compact data center. Going "Green" and reducing
power consumption is critical to data centers, but not at the cost
of reduced performance. Host bus adapter (HbA) manufacturers
must contribute to the solution by reducing power consumption
and increasing the performance-to-power ratios.
QLogic 2500 Series 8Gb HBA Advantage
• QLogic single and dual port HbAs require "No
Airflow"
the QLogic 2500 Series 8Gb fC HbA offers "Cool
HbA™" technology requiring "no airflow" and "no
heatsink".
• QLogic 8Gb adapters utilize 20 percent to 30 percent
less power than emulex
– QLe2560, Single port: 5.5 Watts
– QLe2562, Dual port: 6.2 Watts
• QLogic 8Gb adapters provide "Dynamic power
management", saving an additional 1.3 Watts per
HbA
• QLogic 8Gb adapters provide up to 70 percent
higher iopS per watt than emulex
– QLogic has a 27 percent to 35 percent
advantage without Dynamic power
management
– QLogic has a 66 percent to 70 percent
improvement over emulex with Dynamic
power management
C o m p e t i t i v e b r i e f
QLogic
iopS/W
8Gb Single port HbA 38K/W
8Gb Dual port HbA 50K/W
IOPS per Watt Without Dynamic Power Management
1
QLogic
iopS/W
8Gb Single port HbA 50K/W
8Gb Dual port HbA 63K/W
IOPS per Watt With Dynamic Power Management
1
Competitive Shortfalls
• emulex 8Gb HbAs (Lpe1200x product family) consume up to
42 percent more power than QLogic 8Gb HbAs
– Lpe12000 Single port: 6.9 Watts
– Lpe12002 Dual port: 8.8 Watts
• emulex single and dual port 8Gb HbAs require up to 150Lfm
airflow
Higher power consumption results in higher heat generation
and increased cooling requirements in the server ecosystem.
• emulex requires a heat-sink to keep the 8Gb Lpe1200x
family cool
in addition to the 150Lfm, the emulex 8Gb HbAs require a
heat-sink to reduce the temperature and achieve the same
reliability as QLogic 8Gb adapters.
• emulex's 8Gb HbAs have an up to 70 percent iopS
performance disadvantage per watt
1 benchmarks performed with Quad-Core intel
2003 r2, and iometer at 4Kb read/write block size
emulex QLogic
iopS/W Advantage
30K/W 27%
37K/W 35%
emulex QLogic
iopS/W Advantage
30K/W 66%
37K/W 70%
® Xeon ® , Windows Server ®