Data storage device operated at different spin speeds
AssigneeWestern Digital Technologies, Inc.
InventorsCurtis A. Harper, Paul E. Movall, Scott E. Burton, David R. Hall
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Abstract
A data storage device is disclosed comprising a head actuated over a disk. The disk is spun at a first speed while writing first data to the disk based on a first disk format defining a first capacity for the disk. When a command is received from a host to spin the disk at a second speed different from the first speed, the disk is spun at the second speed while writing second data to the disk based on a second disk format defining a second capacity for the disk different from the first capacity.
Claims19
A data storage device comprising:
- a disk;
- a head actuated over the disk;
- and
- control circuitry configured to:
- spin the disk at a first speed while writing first data to the disk based on a first disk format defining a first capacity for the disk;
- receive a command from a host to spin the disk at a second speed different from the first speed;
- spin the disk at the second speed while writing second data to the disk based on a second disk format defining a second capacity for the disk different from the first capacity;
- and
- read the first data from the disk based on the first disk format while spinning the disk at the second speed.
A data storage device comprising:
- a first disk drive comprising a first disk;
- a second disk drive comprising a second disk;
- and
- control circuitry configured to:
- command the first disk drive to spin the first disk at a first speed while writing first data to the first disk;
- command the second disk drive to spin the second disk at the first speed while writing second data to the second disk;
- transfer at least part of the first data from the first disk drive to the second disk drive;
- and
- command the second disk drive to spin the second disk at a second speed slower than the first speed while writing third data to the second disk.
A data storage device comprising:
- a disk;
- a head actuated over the disk;
- and
- a means for spinning the disk at a first speed while writing first data to the disk based on a first disk format defining a first capacity for the disk;
- a means for receiving a command from a host to spin the disk at a second speed different from the first speed;
- a means for spinning the disk at the second speed while writing second data to the disk based on a second disk format defining a second capacity for the disk different from the first capacity;
- and
- a means for reading the first data from the disk based on the first disk format while spinning the disk at the second speed.
A data storage device comprising:
- a disk;
- a head actuated over the disk;
- and
- control circuitry configured to:
- spin the disk at a first speed while writing first data to the disk based on a first disk format defining a first capacity for the disk;
- receive a command from a host to spin the disk at a second speed different from the first speed;
- spin the disk at the second speed while writing second data to the disk based on a second disk format defining a second capacity for the disk different from the first capacity, wherein the first data is completely overwritten with the second data.
Dependencies are inferred from the claim text.