A plurality of disk drives in a disk drive array are synchronized. A
synchronization signal is generated at a master disk drive. The
synchronization signal is encoded as a radio frequency signal for
transmission over a radio frequency network in communication with the
plurality of disk drives. The transmitted radio frequency signal is
received at a slave disk drive and decoded to recover the synchronization
signal. Rotation of a disk in the slave disk drive is synchronized with
rotation of a disk in the master disk drive based on the recovered
synchronization signal.