Seagate Technology Incorporated

Jason Paul Zimmerman

Mark August Toffle

Lon R Buske

Brent Melvin Weichelt

Rodney Dale Dahlenburg

Brent Marvin Weichelt

William John Raphael

Thomas Henry Sexton

Joel Daniel Phillips

Tim Rausch

Wayne Allen Bonin

John West Dykes

James Carl Hatfield, Jr

Douglas Murphy

Vincent John Reis

Method and apparatus for managing a data storage system that utilizes heat assisted magnetic recording (HAMR). In some embodiments, the method includes recording data to a storage medium using the HAMR system, accumulating a usage statistic indicative of actual elapsed operation of the HAMR system, and setting an indication value in a memory indicative of an estimate of remaining available elapsed operation of the HAMR system. The estimate of remaining available elapsed operation is determined in relation to the usage statistic and an estimated total elapsed operation value.

Heat assisted magnetic recording (HAMR) utilization analysis and reporting system

An actuator and associated method is provided, the actuator having an arm defining an aperture, an electrical circuit supported by the arm and terminating at a contact, a flexure assembly defining a boss and supporting a second electrical circuit terminating at a second contact, wherein the contacts are resultingly positioned in operable mating engagement with each other placing the electrical circuit in electrical communication with the second electrical circuit when the boss is operably disposed within the aperture and there affixed to the arm.

Baseplate interconnect

An actuator assembly and method for orienting a head over a disc within a multi-disc servo-track writer incorporates an actuator block, rotational air bearing, translational air bearing, adaptor plate, E-block and actuator arm/head assembly. Rotation of the E-block, and hence actuator arm/head assembly, is directly controlled by the movement of the rotational air bearing, which is rotated by a motor. The air bearing provides for reduced friction and, as a result, decreased eccentricity of the head as compared to related art configurations. A translational air bearing laterally positions the actuator assembly within the multi-disc servo-track writer for servo-track recording.

Servo track writer with actuator vibration isolation

Apparatus and method for orienting a head over a disc within a multi-disc servo-track writer preferably uses two gas bearings, an adaptor plate, and an actuator assembly including an E-block and arm/head assembly. Rotation of the E-block, and hence actuator arm/head assembly, can be controlled by the movement of a rotational gas bearing, which is rotated by a motor. The gas bearing provides for reduced friction and, as a result, decreased eccentricity of the head as compared to related art configurations. A translational gas bearing can be used for laterally positioning the actuator assembly for servo track recording.

Multi-disc servo track writer vibration isolation method and apparatus

One aspect of the invention relates to an apparatus and method for retaining a disc drive head disk assembly (HDA) during a servo track writing procedure. The HDA includes a base, a disc stack coupled to a spindle rotatably attached to the base by a spindle shaft, and an actuator assembly pivotally attached to the base at a pivot shaft. Attached to one end of the actuator assembly proximal the disc stack is one or more transducers for reading/writing information from/to the discs. In one embodiment, the method includes restraining the ends of the spindle shaft and pivot shaft during servo track writing so that relative deflection therebetween is minimized. That is, all but rotational motion of the components is substantially eliminated. An apparatus for restraining the ends of the spindle shaft and pivot shaft is also provided. By so restraining the shaft and spindle, the servo information written by the transducers is concentric to the rotation of the disk, reducing track misregistration and improving maximum track density.

Horizontal loader for high density servo track writing

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Faribault, MN, United States of America

Jason Paul Zimmerman