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S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
Configuring the SAN Extension Tuner
The SAN extension tuner (SET) feature is unique to the Cisco MDS 9000 Family of switches. This
feature helps you optimize FCIP performance by generating SCSI I/O commands and directing such
traffic to a specific virtual target. You can specify the size of the test I/O transfers and how many
concurrent I/Os to generate while testing. The SET reports the resulting I/Os per second (IOPS) and I/O
latency, which helps you determine the number of concurrent I/Os needed to maximize FCIP throughput.
This chapter includes the following sections:
About SET, page 34-2
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License Prerequisites, page 34-2
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Tuner Guidelines, page 34-3
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Tuner Initialization, page 34-3
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Tuner Configuration, page 34-3
nWWN Configuration, page 34-5
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Virtual N Port Configuration, page 34-5
SCSI Read/Write Assignment, page 34-5
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Data Pattern, page 34-7
Tuning Configuration Verification, page 34-8
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Default Settings, page 34-9
OL-6973-03, Cisco MDS SAN-OS Release 2.x
C H A P T E R
Cisco MDS 9000 Family Configuration Guide
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34-1
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