This integer holds the low-order 32 bits of a 64-bit counter of write cache misses caused by the primary LUN being actively written to at the time, paired with the high-order cpqDaLogDrvCacheVolAccelNoOfWriteMissLockedH value, and returns -1 if not applicable. An admin watches this to identify contention where concurrent writes to the same LUN are interfering with each other's cache handling. For example, a rising cpqDaLogDrvCacheVolAccelNoOfWriteMissLocked count during a heavy multi-threaded write workload suggests lock contention is limiting the write cache's effectiveness.