The LBA label means that Logical Block Addressing is used. It is a common scheme used for specifying the location of blocks of data stored on computer storage devices.
A hard drive has stamped on its label: lba = 7,814,037,168. this means that it has 7,814,037,168 sectors. Or more precisely, 7 platters, 814 cylinders, 37 heads and 168 sectors per track.