QLogic 2500 Series 8Gb FC Adapters Offer Performance Benefits - Manual (Page 3)

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White PaPer
4Gb Test Setup
Test Results
the test results demonstrated the performance increase of the 8Gb adapter
infrastructure over the 4Gb adapter infrastructure. the graphs in the
following paragraphs identify and compare performance while executing
sequential reads and write operations, which provided maximum iOPS and
throughput measured in the following configurations:
• 884 configuration: 8Gb adapter, 8Gb switch, 4Gb storage
• 844 configuration: 8Gb adapter, 4Gb switch, 4Gb storage
• 444 configuration: 4Gb adapter, 4Gb switch, 4Gb storage
the QLogic 8Gb products showed a significant performance increase over
the 4Gb products, especially at smaller block sizes. Note that the QLogic
2500 series 8Gb FC adapter will be the product of choice for standard
enterprise applications like Microsoft exchange and Oracle
® . these
applications typically use smaller block sizes. Microsoft exchange primarily
uses 4KB data blocks for message traffic. in the testing with Oracle, 8Gb
was 102 percent faster than 4Gb with data warehousing application
workloads (random, large 70 percent read operations).
In performance analysis with 8Gb, the QLogic 2500 series 8Gb FC
adapter had 200,000+ IOPS and 1550 MBps for throughput on a
single-port 8Gb adapter. the highest performance measured on the 4Gb
product was 150,000 iOPS and 800Mbps. the intent of this white paper
(and QLogic 8Gb FC adapters) is not to end-of-life the 4Gb products, but to
identify an addition to the overall QLogic FC portfolio with the introduction
of the 8Gb adapter product line. QLogic 4Gb FC adapters are still the
highest performing in the industry.
Sequential read/Write throughput
at block sizes above 8KB, the QLogic 2500 series 8Gb FC adapter
demonstrated a 90 percent improvement over 4Gb adapters. applications
that include D2D, MS exchange and data replication, and remote mirroring
will benefit from the QLogic 8Gb adapter.
Sequential Read/Write Throughput
QLogic 8Gb FC adapters meet the demand of increased virtual server
density. With the increased throughput in the data center, the virtual server
workload need is also increased. as illustrated by the following chart, there
is twice the throughput in the amount of workload that can be supported
with the QLogic 8Gb adapter versus the QLogic 4Gb adapter.
Virtual Server Workloads
to test the scalability of virtual machines, QLogic performed tests with eight
virtual machines, each trying to push a throughput of 100MBps through
the i/O pipe. the test results show that 8Gb adapters deliver twice the
throughput as 4Gb adapters; therefore, 8Gb adapters have double the i/O
scalability in virtual environments.