Western Digital Technologies, Inc.

Danny J Kastler

Shane G Nowell

Edwin Scott Olds

Wayne Howard Vinson

Jie Yu

Wei Xi

Jun Xu

Michael Troy Nicholls

Travis D Fox

Brian K Lee

Jie Wan

Nan-Hsun Han

Kevin S Quillen

A dual disk spindle motor hard disk drive includes a first portion having a first spindle motor and a first disk media stack mounted thereon and housed in a first enclosure, and a second portion having a coaxial second spindle motor and a second disk media stack mounted thereon and housed in a second enclosure, where the second portion further includes both the first actuator and head sliders corresponding to the first disk stack as well as the second actuator and head sliders corresponding to the second disk stack. The first and second portions are coupled together such that the open sides of the enclosures mate, referred to herein as a clamshell configuration, and each separate spindle motor is configured to operate independently of the other. With independent control of multiple spindle motors, various control functions may be utilized to address power consumption and temperature control.

Dual spindle motor hard disk drive

Embodiments described herein relate to systems and methods for decreasing power consumption of a storage device. More specifically, embodiments disclosed herein are directed to reducing power consumption of a data storage device by enabling a command buffer associated with the data storage device to store received commands without executing the commands until a predetermined number of commands have been stored in the buffer.

Power aware power safe write buffer

A data storage device is disclosed comprising a spindle motor configured to rotate a disk, wherein the spindle motor comprises a plurality of windings, and a head actuated over the disk. The windings of the spindle motor are commutated based on a commutation sequence while applying a periodic driving voltage to each winding. During a seek operation to seek the head a seek length, an amplitude of the periodic driving voltage is adjusted according to a driving profile corresponding to the seek length, wherein the driving profile compensates for a power disturbance during the seek operation.

Data storage device employing spindle motor driving profile during seek to improve power performance

Adjusting power and/or performance settings of a data storage device (DSD) in a system including the DSD and a host in communication with the DSD. A driver executed on the host defines user settings for the DSD and determines a state of the system. The driver commands the DSD to adjust power and/or performance settings for the DSD based on the state of the system and the user settings.

User controlled data storage device power and performance settings

An apparatus includes: a media motor; a media mounted on the media motor; a head, over the media, the motion of the head controlled by a head actuation motor; a motor driver, coupled to the media motor, configured to adjust a media speed; and control circuitry configured to: coast the media motor in preparation for accelerating the head, and activate the head actuation motor including accelerating the head in a first direction for repositioning the head over the media.

Growing community of inventors

Longmont, CO, United States of America

Danny J Kastler