公开(公告)号：WO2022271213A1

公开(公告)日：2022-12-29

申请号：PCT/US2022/017930

申请日：2022-02-25

Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.

Inventor： SURIANARAYANAN, Ravishankar

IPC: G06F9/48 ,  G06F9/38 ,  G06F9/50 ,  G06F13/42 ,  G06F13/374 ,  G06F3/061 ,  G06F3/0631 ,  G06F3/0655 ,  G06F3/0679 ,  H04L67/141

Abstract: Systems and methods described herein provide for determining priority levels within one or more data streams established between a host computing device and a storage device. Data streams that have been assigned a sufficiently high priority may be provided additional processing resources available within the storage device. These additional processing resources may include an increased number of write buffers, superblocks, and access to other ancillary resources that facilitate an increased level of performance compared to data streams not provided additional processing resources. The assignment of priority to the data streams can occur through the use of one or more priority identifiers. Many types and scales of priority identifiers may be used. The establishing of this system of priority identifiers can occur by the storage device notifying the hose of the accepted priority identifier usage. In other embodiments, the storage device may come preconfigured with a priority indication system and scale.

公开(公告)号：WO2023027781A1

公开(公告)日：2023-03-02

申请号：PCT/US2022/027970

申请日：2022-05-06

Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.

Inventor： SURIANARAYANAN, Ravishankar ,  BJORLING, Matias

IPC: G06F3/06

Abstract: A data storage device includes a memory device and a controller coupled to the memory device. The memory device includes at least a first super device and a second super device. Each of the super devices includes a plurality of active zones and a threshold value for a number of cold zones. The controller classifies zones as either a cold zone or hot zone depending the number of resets to the zone. If the number of resets to the zone is greater than a threshold reset value, then the zone is classified as a hot zone, otherwise the zone is classified as a cold zone. The controller is configured to determine that the number of cold zones is greater than the threshold value for a super device and move data from at least one cold zone from the super device to a zone of another super device.

公开(公告)号：WO2023027784A1

公开(公告)日：2023-03-02

申请号：PCT/US2022/028219

申请日：2022-05-07

Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.

Inventor： SURIANARAYANAN, Ravishankar ,  BJORLING, Matias

IPC: G06F3/06 ,  G06F12/02

Abstract: A data storage device includes a memory device and a controller coupled to the memory device. The memory device includes a plurality of super devices. The controller is configured to set a free space threshold value for amount of free space that each super device of the plurality of super devices can have, determine that at least one super device of the plurality of super devices is at or above the free space threshold, determine that cold zones are disposed in more than one super device of the plurality of super devices, move data from the cold zones to a first super device of the plurality of super devices wherein after moving the data, all super devices are below the free space threshold, and allocate all new super blocks among the plurality of super devices without allocating any new super blocks to the first super device.

公开(公告)号：WO2023027783A1

公开(公告)日：2023-03-02

申请号：PCT/US2022/027973

申请日：2022-05-06

Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.

Inventor： SURIANARAYANAN, Ravishankar ,  BJORLING, Matias

IPC: G06F3/06 ,  G06F12/02

Abstract: A data storage device includes a memory device and a controller coupled to the memory device. The memory device includes a plurality of super devices. The controller is configured to set a free space threshold for an amount of free space for each super device of the plurality of super devices, determine that a first super device has reached the free space threshold value, and allocate all new super blocks among the plurality of super devices without allocating any new super blocks to the first super device. The super blocks are distributed or allocated to each of the super devices that are below the free space threshold value round robin.

公开(公告)号：WO2023027782A1

公开(公告)日：2023-03-02

申请号：PCT/US2022/027972

申请日：2022-05-06

Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.

Inventor： SURIANARAYANAN, Ravishankar ,  BJORLING, Matias

IPC: G06F3/06

Abstract: A data storage device includes a memory device and a controller coupled to the memory device. The memory device is arranged into at least a first super device and a second super device, each of the super devices having a plurality of active zones. The controller is configured to determine that each of the super devices includes both cold zones and hot zones, where a cold zone is a zone that is overwritten less than a hot zone. The controller is further configured to move cold zones from one super device to another super device upon determining that the another super device is below a threshold limit, where the threshold limit is a minimum free space to be maintained in a super device. The controller is further configured to move cold zones between super devices, such that the cold zones are concentrated in at least one super device.