This object reports how many SCSI write operations are currently outstanding on this LUN/flow at the moment it is polled, mirroring ciscoScsiFlowRdsActive for writes. An admin watching this value stay persistently elevated, rather than draining back toward zero, can spot a flow where the target or path cannot keep up with the initiator's write rate - a leading indicator of the write timeouts and failures tracked elsewhere in this table. A sudden sustained rise in active writes on a flow feeding a specific LUN would be worth investigating before those pending writes start timing out.