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55-7
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-17256-03, Cisco MDS NX-OS Release 4.x
Chapter 55 Configuring SCSI Flow Services and Statistics
SCSI Flow Statistics
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Maximum I/O response time
• Other SCSI commands (not read or write)
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Test unit ready
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Report LUN
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Inquiry
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Read capacity
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Mode sense
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Request sense
• Errors
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Number of timeouts
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Number of I/O failures
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Number of various SCSI status events
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Number of various SCSI sense key errors or events
To take advantage of this feature, only the initiator must be directly attached to an SSM.
Note The SCSI flow statistics feature requires the Enterprise Package license installed only on the initiator
switches.
Note For SCSI flow statistics, the initiator must connect to an SSM on a Cisco MDS switch while the target
can connect to any other switch in the fabric. The SCSI flow initiator and target cannot connect to the
same switch.
Configuring SCSI Flow Statistics
This section includes the following topics:
• Enabling SCSI Flow Statistics, page 55-7
• Clearing SCSI Flow Statistics, page 55-8
Enabling SCSI Flow Statistics
To enable SCSI flow statistics monitoring using Fabric Manager, follow these steps:
Step 1 Expand End Devices and then select SSM Features in the Physical Attributes pane.
You see the FCWA tab in the Information pane.
Step 2 Click Create Row in the Information pane to create a SCSI flow or click a row in the FCWA table to
modify an existing SCSI flow.
You see the FC Write Acceleration dialog box shown in Figure 55-5.
Step 3 Select the initiator and target WWNs and VSAN IDs and check the Enable Statistics check box to
enable SCSI flow statistics on this SCSI flow.