Abstract: Noise is reduced in a disk drive enclosure by using vibration damping materials on the inside surface of the enclosure. These materials and their placement on the inside surface of the enclosure reduce noise without thermally insulating the disk drive. A temperature controlled fan may be used to remove heat by convection while generating a minimum amount of noise. The connection between the disk drive and the external connector of the disk drive enclosure is made more reliable by using a printed circuit board instead of a cable. Because a printed circuit board has a fixed location and fixed layout, variability among disk drive enclosures can be minimized. Also, errors in manufacturing of the disk drive enclosure can be reduced. To facilitate the use of the disk drive in a stripe set, the disk drive enclosure has a set of mechanical interlocks that permit the enclosures to be stacked vertically.

Abstract: A mount for a computer component such as a disk drive includes horizontal platforms having upstanding studs and a strap. The strap is movable between an open position in which a drive may be removed from or installed into the mount and a closed position in which the upstanding studs are inserted into bores in the component and the strap keeps the component in place such that the studs remain in the bore and the drive is secure. Each end of the strap travels in a vertical channel formed along a corresponding vertical wall of the mount. Each end of the strap is provided with a detent and each vertical channel includes a detent receptacle sized to engage the detent. The detent receptacle corresponds to a closed position. A second detent receptacle may also be provided to hold the strap in an open position. The detent reliably secures the drive in the closed position while allowing the strap to be moved easily between the open and closed positions.

Abstract: A shock mounting system for data storage modules that house disk drives such as those used in RAID systems. In one embodiment of the invention, a flexible spacer formed on or fastened to the module housing provides the desired tight but cushioned fit between the module and the enclosure. In a second embodiment, a flexible guide formed on or fastened to the enclosure that houses the modules provides the desired fit.

Abstract: With respect to the disk drives provided power from a single power source in a disk drive system, start up power is first supplied to a first start-up group of the disks, preferably comprising all of the master disks, with the size of the group being selected so that the required current does not exceed the capacity of the power source. When the disk drives of the first group have substantially reached steady state, start-up is conducted with respect to a second start-up group of the disk drives so that the current required during start-up for the second group and the current required for steady state drive of the first start-up group does not exceed the capacity of the power source. With respect to each start-up group, the number of disk drives is the maximum integer value and decreases or remains the same with respect to subsequent start-up groups.

Abstract: An arrangement of a first receptacle and a second receptacle for separately receiving a card device in a portable computer. The first and second card receptacles are coupled to allow movement of the receptacles relative to each other between a first configuration where the receptacles are substantially nested, and a second configuration where the receptacles are substantially stacked, such that the receptacles move from the first configuration to the second configuration in order to receive a card device in the first receptacle.

Abstract: A magnetic disk drive is provided having at least one magnetic disk, a magnetic head for writing and reading data, and a vessel in which the magnetic disk and magnetic head are sealed. The vessel is filled with air, an inert gas, or a mixture of air and inert gas. A clearance distance is provided between the magnetic disk and a surface opposite thereto, which distance is not larger than 1.0 mm when the vessel is filled with air, 1.1 mm with helium, 1.7 mm with neon, 1.2 mm with argon, 1.4 mm with krypton, and 1.2 mm with xenon. In one preferred embodiment, there may be provided a plurality of grooves on the stationary surface opposite to the magnetic disk, or a fan in a rotary shaft of the magnetic disk, in order to direct air inwardly between the magnetic disk and the surface opposite thereto. By setting the clearance distance as small as possible, it is possible to reduce the thickness reduction of lubricant caused by shearing force of air flow along the magnetic disk surface.

Abstract: A cable connector includes a connector housing mounted to an edge of a circuit board so that the connector is electrically connected to circuits on the circuit board. The circuit board and cable connector are mountable to a disc drive housing. The cable connector housing has an external configuration conforming to at least a portion of the disc drive housing. A plurality of contacts are supported by the connector housing for receiving a connector electrically connected to external circuits.

Abstract: Differing gram loads and actuator arm resonances are compensated for through the method and apparatus of positioning z-height of outer actuator arm at an optimal height. Specifically, an actuator arm driven by a closed loop servo motor system for a disc drive system is configured so that the outer upper and lower actuator arms are positioned at an optimum distance, called optimum z-height, from the disc surface. At the optimum z-height position, the gram load of the outer actuator arms are shifted as near as possible to the gram load of the inner actuator arms. At the optimum z-height, the resonances on the head gimbal assemblies of the inner and outer actuator arms are closest.