Disk drive having a high performance access mode and a lower performance archive mode
AssigneeWestern Digital Technologies, Inc.
InventorsMarc A. Bombet, William B. Boyle
Life of this patent
Estimating the term…
Abstract
A disk drive is disclosed including a disk having a plurality of tracks, and a head actuated over the disk. A write frequency of write data received from a host is monitored. When the write frequency falls below a threshold, the disk drive is configured to operate in a low frequency access mode when accessing the disk, wherein a parameter of the disk drive is configured to increase the reliability of the disk drive. When the write frequency rises above a threshold, the disk drive is configured to operate in a high frequency access mode when accessing the disk, wherein the parameter of the disk drive is configured to increase the performance of the disk drive.
Claims28
A disk drive comprising:
- a disk comprising a plurality of tracks;
- a head actuated over the disk;
- and
- control circuitry operable to:
- monitor a write frequency of write data received from a host;
- when the write frequency falls below a threshold, configure the disk drive to operate in a low frequency access mode when accessing the disk, wherein a parameter of the disk drive is configured to decrease a throughput of the disk drive;
- and
- when the write frequency rises above a threshold, configure the disk drive to operate in a high frequency access mode when accessing the disk, wherein the parameter of the disk drive is configured to increase the throughput of the disk drive.
A disk drive comprising:
- a disk comprising a plurality of tracks;
- a head actuated over the disk;
- and
- control circuitry operable to:
- define a plurality of zones on the disk, including a first zone and a second zone;
- configure the disk drive to operate in a high frequency access mode when accessing the first zone, wherein the disk drive is configured according to a parameter so as to increase the performance of the disk drive;
- configure the disk drive to operate in a low frequency access mode when accessing the second zone, wherein the disk drive is configured according to the parameter so as to increase the reliability of the disk drive;
- monitor a write frequency of write data received from a host for the first zone;
- and
- when the write frequency for the first zone falls below a threshold, copy data stored in the first zone to the second zone.
A disk drive comprising:
- a disk comprising a plurality of tracks;
- a head actuated over the disk;
- a means for monitoring a write frequency of write data received from a host;
- when the write frequency falls below a threshold, a means for configuring the disk drive to operate in a low frequency access mode when accessing the disk, wherein a parameter of the disk drive is configured to decrease a throughput of the disk drive;
- and
- when the write frequency rises above a threshold, a means for configuring the disk drive to operate in a high frequency access mode when accessing the disk, wherein the parameter of the disk drive is configured to increase the throughput of the disk drive.
A disk drive as comprising:
- a disk comprising a plurality of tracks;
- a head actuated over the disk;
- and
- a means for defining a plurality of zones on the disk, including a first zone and a second zone;
- a means for configuring the disk drive to operate in a high frequency access mode when accessing the first zone, wherein the disk drive is configured according to a parameter so as to increase the performance of the disk drive;
- a means for configuring the disk drive to operate in a low frequency access mode when accessing the second zone, wherein the disk drive is configured according to the parameter so as to increase the reliability of the disk drive;
- a means for monitoring a write frequency of write data received from a host for the first zone;
- and
- when the write frequency for the first zone falls below a threshold, a means for copying data stored in the first zone to the second zone.
Dependencies are inferred from the claim text.