cpqDaPhyDrvBlinkTime is a read-write Counter giving, in tenths of a second, how much longer a physical drive's LEDs will keep blinking, with zero meaning the LEDs are currently idle and 4,294,967,295 returned if the value can't be determined or the drive isn't in a hot-plug tray. Because it's writable, an admin can set this value to make a specific drive's LED blink for a chosen duration, which is exactly how technicians visually locate the correct physical drive in a rack full of identical bays before pulling it. For example, an admin who needs to replace the drive at cpqDaPhyDrvBusNumber 2 would write a value like 600 (one minute) here to make that exact drive flash so it isn't confused with its neighbors.