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Chapter 38
Configuring SCSI Flow Services and Statistics
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 SCSI Flow Identifiers
A SCSI flow identifier is unique on a switch and is chosen by the user, like VSAN identifiers. To
configure a SCSI flow identifier, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# scsi-flow flow-id 3
initiator-vsan 2 initiator-pwwn
21:00:00:e0:8b:07:5f:aa target-vsan 4
target-pwwn 2a:20:00:05:30:00:77:e0
switch(config)# no scsi-flow flow-id 3
initiator-vsan 2
About SCSI Flow Statistics
The statistics that can be collected for SCSI flows include the following:
•
•
•
•
OL-6973-03, Cisco MDS SAN-OS Release 2.x
SCSI reads
–
Number of I/O s
Number of I/O blocks
–
Maximum I/O blocks
–
Minimum I/O response time
–
Maximum I/O response time
–
SCSI writes
Number of I/Os
–
–
Number of I/O blocks
–
Maximum I/O blocks
Minimum I/O response time
–
Maximum I/O response time
–
Other SCSI commands (not read or write)
Test unit ready
–
Report LUN
–
Inquiry
–
–
Read capacity
–
Mode sense
Request sense
–
Errors
Number of timeouts
–
Number of I/O failures
–
Number of various SCSI status events
–
About SCSI Flow Statistics
Purpose
Enters configuration mode.
Configures SCSI flow identifier 3 using the
pWWNs of the initiator and the target. The
flow identifier range is 1 to 65535.
Removes a SCSI flow identifier 3.
Cisco MDS 9000 Family Configuration Guide
38-5
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