Hard disk drive having multiple disk stacks and a movable head stack assembly
AssigneeHGST Netherlands B.V.
InventorsJeffrey L. Furlong, Toshiki Hirano, Tatsuo Nakamoto
Life of this patent
Estimating the term…
Abstract
A lower cost per unit of storage hard disk drive (HDD) includes multiple disk stacks and a head stack assembly (HSA) movably coupled to a rail for accessing magnetic-recording disks of each of the multiple disk stacks. Such an HDD may include multiple columns of linearly-arranged disk stacks with an HSA corresponding to each column, where the disk stacks on each side of the rail are positioned for asynchronous access by the HSA, and may include multiple HSAs coupled to the rail, where the disk stacks on each side of the rail are positioned for simultaneous access by respective HSAs being moved either synchronously or independently.
Claims18
A hard disk drive, comprising:
- a plurality of fixed disk stacks, each disk stack comprising one or more magnetic-recording disk rotatably mounted on a spindle;
- a head stack assembly movably coupled to a rail, said head stack assembly comprising:
- a head slider comprising a magnetic read/write head for reading data from and writing data to one or more magnetic-recording disk,
- a flexure, to which said head slider is coupled,
- an actuator arm, to which said flexure is coupled, and
- an actuator, to which said actuator arm is coupled, said actuator configured to move said head slider to access portions of said one or more magnetic-recording disk of each of the plurality of disk stacks.
A hard disk drive, comprising:
- a plurality of linearly-arranged disk stacks fixed to a base, each disk stack comprising one or more magnetic-recording disk rotatably mounted on a spindle;
- a head stack assembly movably coupled to a rail positioned substantially parallel to said plurality of disk stacks, said head stack assembly comprising:
- a head slider comprising a magnetic read/write head for reading data from and writing data to one or more magnetic-recording disk, and
- an actuator configured to move said head slider to access portions of said one or more magnetic-recording disk of each of the plurality of disk stacks;
- and
- wherein said head stack assembly is configured to be moved along said rail and to be temporarily fixed into position along said rail to access portions of said one or more magnetic-recording disk.
A hard disk drive, comprising:
- at least two groups of a plurality of linearly-arranged disk stacks fixed to a base, each disk stack comprising one or more magnetic-recording disk rotatably mounted on a spindle;
- a plurality of head stack assemblies movably coupled to a rail positioned between said groups, each head stack assembly comprising:
- a head slider comprising a magnetic read/write head for reading data from and writing data to one or more magnetic-recording disk, and
- an actuator configured to move said head slider to access portions of said one or more magnetic-recording disk of at least one group of said disk stacks;
- wherein each head stack assembly is configured to be moved along said rail and to be temporarily fixed into position along said rail;
- and
- wherein a first group and a second group of said at least two groups of disk stacks are positioned for simultaneous access by a respective head stack assembly of said plurality of head stack assemblies.
Dependencies are inferred from the claim text.