Workload amplification metering and management

Patent metadata

Field	Value
Publication number	US-11934673-B2
Application number	US-202217885828-A
Country	US
Kind code	B2
Filing date	Aug 11, 2022
Priority date	Aug 11, 2022
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

A data storage device includes at least one data storage medium. The data storage device also includes a workload rating associated with data access operations carried out on the at least one data storage medium. The data storage device further includes a controller configured to enable performance of the data access operations, and change a rate of consumption of the workload rating by internal device management operations carried out in the data storage device in response to a change in a workload consumed by host commands serviced by the data storage device.

First claim

What is claimed is:

1. A data storage device comprising:
at least one data storage medium; and
a controller communicatively coupled to the data storage medium and configured to change usage of the data storage device for at least one of data read or data write operations to the data storage medium based on a workload of the data storage device and a workload rating of the data storage device,
wherein the change in the usage of the data storage device is carried out independently of any host device connected to the data storage device;
wherein the controller is configured to change the usage of the data storage device by changing caching policies of the data storage device; and
wherein:
the at least one data storage medium comprises at least one data storage disc having a media cache portion and main storage portion;
the data storage device further comprises a solid state cache memory; and
changing the caching policies comprises changing one or more criteria that determine whether to transfer data from the solid state cache memory to the media cache portion prior to transferring the data to the main storage portion.

2. The data storage device of claim 1 and wherein the workload of the data storage device comprises a workload consumed by host commands serviced by the data storage device and a workload consumed by internal device management operations carried out within the data storage device.

3. The data storage device of claim 2 and wherein the controller is configured to further change the usage of the data storage device by changing a manner in which the internal device management operations are carried out, thereby impacting a rate of consumption of the workload rating.

4. The data storage device of claim 3 and wherein:
the internal device management operations comprise read look ahead (RLA) activity;
the controller is configured to change a level of the RLA activity; and
the change in the level of the RLA activity impacts the rate of consumption of the workload rating.

5. The data storage device of claim 3 and wherein:
the internal device management operations comprise background operation activity;
the controller is configured to change a level of the background operation activity; and
the change in the level of the background operation activity impacts the rate of consumption of the workload rating.

6. A method comprising:
providing at least one data storage medium in a data storage device; and
changing usage of the data storage device for at least one of data read or data write operations to the data storage medium based on a workload of the data storage device and a workload rating of the data storage device;
wherein the change in the usage of the data storage device is carried out independently of any host device connected to the data storage device;
wherein changing the usage of the data storage device comprises changing caching policies of the data storage device; and
wherein:
providing the at least one data storage medium comprises providing at least one data storage disc having a media cache portion and a main storage portion; and
changing the caching policies comprises changing one or more criteria that determine whether to transfer data from a solid state cache memory of the data storage device to the media cache portion prior to transferring the data to the main storage portion.

7. The method of claim 6 and wherein the workload of the data storage device comprises a workload consumed by host commands serviced by the data storage device and a workload consumed by internal device management operations carried out within the data storage device.

8. The method of claim 7 and wherein changing the usage of the data storage device further comprises changing a manner in which the internal device management operations are carried out, thereby impacting a rate of consumption of the workload rating.

9. The method of claim 8 and wherein:
the internal device management operations comprise read look ahead (RLA) activity;
a level of the RLA activity is changed; and
the change in the level of the RLA activity impacts the rate of consumption of the workload rating.

10. The method of claim 8 and wherein:
the internal device management operations comprise background operation activity;
a level of the background operation activity is changed; and
the change in the level of the background operation activity impacts the rate of consumption of the workload rating.

11. A data storage device comprising:
at least one data storage medium;
a workload rating associated with data access operations carried out on the at least one data storage medium; and
a controller configured to:
enable performance of the data access operations; and
change a rate of consumption of the workload rating by internal device management operations carried out in the data storage device in response to a change in a workload consumed by host commands serviced by the data storage device;

wherein the controller is configured to change the rate of consumption of the workload rating by changing caching policies of the data storage device; and
wherein:
the at least one data storage medium comprises at least one data storage disc having a media cache portion and main storage portion;
the data storage device further comprises a solid state cache memory; and
changing the caching policies comprises changing one or more criteria that determine whether to transfer data from the solid state cache memory to the media cache portion prior to transferring the data to the main storage portion.

12. The data storage device of claim 11 and wherein:
the internal device management operations comprise read look ahead (RLA) activity;
the controller is configured to change a level of the RLA activity; and
the change in the level of the RLA activity impacts the rate of consumption of the workload rating.

13. The data storage device of claim 11 and wherein:
the internal device management operations comprise background operation activity;
the controller is configured to change a level of the background operation activity; and
the change in the level of the background operation activity impacts the rate of consumption of the workload rating.

14. The data storage device of claim 11 and wherein the one or more criteria relate to a data transfer length from the solid state cache memory.

Assignees

• Seagate Technology Llc

Inventors

• Kataria Abhay T
• Viraraghavan Praveen
• Gaertner Mark A

Classifications

• G06F3/0635 Primary

  by changing the path, e.g. traffic rerouting, path reconfiguration · CPC title

• G06F3/0604

  Improving or facilitating administration, e.g. storage management · CPC title

• G06F3/0634

  by changing the state or mode of one or more devices · CPC title

• G06F3/0673

  Single storage device · CPC title

• G06F3/068 Primary

  Hybrid storage device · CPC title