A method for using a modular unitary disk file subsystem

摘要

A modular unitary disk file subsystem is used directly with a host computer. The subsystem includes a common unitary mounting substrate for power and signal connections to the host and for supplying control and data signals back via data, address and control buses to the host computer through a direct plug-in connection without any cabling between the subsystem and the host. The substrate carries and interconnects a unitary disk store head and disk assembly, a disk store control, a disk file controller, and a data and control interface with the computer. The modular unitary plugin form factor, a single supervisory microcomputer controller and a memory containing basic input/output driver routines directly executable by the host computer allow the subsystem to be transported easily between host computers.