This counter provides the high-order 32 bits of the total seek operations performed by the physical drive during its reference hours, combined with cpqFcaPhyDrvSeeks by multiplying this value by 2^32; a return of 4,294,967,295 means the value could not be determined. An admin uses the combined seek count to gauge how much mechanical head movement a drive has performed, which correlates with wear on mechanical drives. For example, an unusually high seek count relative to sibling drives in the same array could indicate a workload pattern causing excessive random I/O on that disk.