This object turns per-flow SCSI statistics gathering on or off, controlling whether the device tracks the detailed I/O counters (like ciscoScsiFlowRdIos, ciscoScsiFlowWrIos, and the various SCSI error counters) found elsewhere in this table for this specific flow. An admin troubleshooting a suspected storage performance problem on one particular host-to-array path enables this on just that flow to start collecting detailed read/write and error statistics without burdening every flow on the switch with the overhead of stats collection. Leaving this false on flows the admin is not actively investigating keeps monitoring overhead low across a switch handling hundreds of flows.