This integer holds the low-order 32 bits of a 64-bit counter of write cache misses that triggered a data load from primary storage into the drive cache, paired with the high-order cpqDaLogDrvCacheVolAccelNoOfWriteMissDoLoadH value, and returns -1 if not applicable. An admin watches this to see how often a write required first loading the target block from primary storage into cache before it could be written. For example, a high cpqDaLogDrvCacheVolAccelNoOfWriteMissDoLoad count on a partial-block-write-heavy application indicates frequent read-before-write cache loads.