A spindle motor configured to be used for a hard disk drive device with a gas having a density lower than a density of air sealed in an internal space includes a rotor magnet. The rotor magnet has a radial thickness of 1.0 to 1.4 mm and a density of 5.6 to 6.0 g/cm.sup.3.

A storage system includes a cassette tape case having a first portion defining a recess extending along a length of the case and a second portion that is rotatably coupled with the first portion. The second portion has two protrusions that extend into an interior of the case at a medial position. The protrusions are aligned with a longitudinal axis of the case. A storage device is insertable within the case, the storage device having a storage device body with a two sides and being generally shaped like a cassette tape. The body defines two circular apertures that extend at least partially through a thickness of the body. When the storage device is inserted within the case, each protrusion extends at least partially into a respective circular aperture. The body defines a recess extending along a length of the body and extending partially through the thickness of the body.

According to one embodiment, a suspension assembly includes a support plate, a wiring member disposed on the support plate, and a head supported on the support plate through the wiring member. The wiring member includes a distal end portion electrically connected to the head, a connection end portion extending outside the support plate, and a plurality of wirings extending between the distal end portion and the connection end portion. The connection end portion includes an opening with predetermined length and width and thirteen or more connection terminals disposed in the opening and arranged at intervals in a direction of the length. A percentage of an area of the opening occupied by areas of the thirteen or more connection terminals is 40% to 65% inclusive.

A flexure of a disk drive suspension includes a metal base, and a wiring portion provided along the metal base. The wiring portion includes a base insulating layer, a conductor layer overlapping with the base insulating layer, and a cover insulating layer overlapping with the conductor layer, and the metal base includes a pair of first portions having side surfaces opposed to each other. At least one of the base insulating layer and the cover insulating layer is in contact with the side surfaces between the pair of first portions, and the conductor layer does not overlap with the metal base in a direction of stacking the wiring portion

A hard disk drive includes a base and a cover coupled together to create an enclosure and an actuator assembly positioned in the enclosure. The actuator assembly includes a body and arms extending from the body, and the arms comprise a reinforced aluminum alloy. Magnetic recording disks are respectively positioned between pairs of the arms.

A base member serving as a part of a housing of a hard disk drive device. The base member includes a base body being a cast product, a machined surface obtained by machining a part of the base body at a side of an interior of the housing, an impregnating agent filled into a casting cavity exposed at the machined surface, and a coating film covering a surface including the machined surface of the base body.

A base member serving as a part of a housing of a hard disk drive device. The base member includes a base body being a cast product, a machined surface obtained by machining a part of the base body at a side of an interior of the housing, an impregnating agent filled into a casting cavity exposed at the machined surface, and a coating film covering a surface including the machined surface of the base body.

A method for designing an enclosure by predicting hard drive disk (HDD) performance in an experimental enclosure, where the enclosure is a modified version of the experimental enclosure. The method includes obtaining, by an HDD performance data generator, an experimental enclosure vibration dataset from a vibration measurement apparatus, obtaining an ideal HDD vibration threshold; making a first comparison between the experimental enclosure vibration dataset and the ideal HDD vibration threshold, calculating, based on the first comparison, an experimental enclosure HDD performance dataset, making a first determination that the experimental enclosure HDD performance dataset exceeds an acceptable threshold, and performing a design action on the experimental enclosure based on the first determination to generate a design of the enclosure.

A mechanical enclosure provides a mechanism for coupling a storage device to a computer system. The mechanical enclosure can be removably coupled to the computer system and can allow for coupling of the storage device to the computer system without using specialty cables and connectors. The mechanical enclosure can allow the storage device to be coupled to computer system without significantly degrading the speed at which the data stored within the storage device is downloaded onto the computer. The storage device can be inserted into the mechanical enclosure which couples the storage device to the mechanical enclosure. The mechanical enclosure can be inserted into the computer system which similarly couples the computer system to the mechanical enclosure to effectively couple the storage device and the computer system. Once the storage device is effectively coupled to the computer system, the data stored within the storage device can be downloaded onto the computer without the need for specialty cables and connectors.

A thermally and structurally optimized disaster resistant housing for a vertically stacked array of computer digital data storage devices such as hard drives is provided. An external, fire resistant housing has an internally mounted water resistant enclosure for the array. The water resistant enclosure includes a plurality of much thicker plates than known which significantly increase dissipation of heat and simultaneously greater increase the crush and impact load resistance of the device. An automatic method is also provided for producing complex molded gypsum or cement components.