Western Digital Technologies, Inc.

Samsung Electronics Co., Ltd.

Sandisk Technologies Inc.

Daniel Lee Helmick

Liam Michael Parker

Peter Grayson

Sergey Anatolievich Gorobets

Alan David Bennett

Chun-Chu Chen-Jhy Archie Wu

Ryan R Jones

Amir Hossein Gholamipour

Horst-Christoph Georg Hellwig

Stephen Gold

Martin Lueker-Boden

Chandan Mishra

Mai Ghaly

Sumanth Jannyavula Venkata

Fnu Vikram Singh

Richard S Lucky

Matias Bjorling

Vipin Kumar Agrawal

Yehuda Hahn

Xinde Hu

Kent Douglas Anderson

James J Walsh

Yuheng Zhang

Neil David Hutchison

Rodney Brittner

Yong Yang

Syed Kaiser

Vasili Zhdankin

David Landsman

Robert Wayne Moss

Gerrit Jan Hemink

James Fitzpatrick

Robert W Ellis

Jisoo Kim

Duc T Phan

Orhan Beker

Mark Joseph Dancho

Donald Joseph Brunnett

Majid Nemati Anaraki

Timothy Glen Hallett

Rajesh Koul

Young Deok Kim

James B Hart

Danny Berler

Aswartha Narayana

Jeffrey Koon Yee Lee

Eran Moshe

Jay Sarkar

Cory J Peterson

William Martin

Yibo Yin

Hao Su

Shane Walker

Sang Young Ye

Matias Bjørling

Charles D Richards

Paul David Martin

Eric Hibbard

Judith Rose Brock

Marc Timothy Jones

Michael Allison

Vipin Kuma Agrawal

A memory is disclosed. The memory may include a first data structure and a second data structure. The first data structure may include a first field to store a first data relating to a command, and a related command field, the related command field to store a value. The second data structure may include a second field to store a second data relating to the command. A queue stored in the memory, may include the first data structure. A storage device may be configured to identify the first data structure and the second data structure () as related based at least in part on the value.

Solving submission queue entry overflow with an additional out-of-order submission queue entry

A method may include receiving, at a device, a copy command, wherein the copy command comprises a first indication of a first amount of source data and a second indication of a second amount of source data, determining, based at least in part on the first indication, an amount of destination space, and blocking at least a portion of the amount of destination space. The method may further include reading the first indication, and reading the second indication, wherein the amount of destination space may include at least a first portion of the first amount and at least a second portion of the second amount. The blocking may include blocking the at least the first portion of the first amount and the at least the second portion of the second amount. The method may further include storing the first indication to generate a stored first indication.

Systems, methods, and apparatus for copy destination atomicity in devices

A storage device may include at least one storage medium and a controller configured to receive a write command, wherein the write command specifies data and a reclaim unit handle, receive information about the data, and store, based on the reclaim unit handle and the information, the data in a reclaim unit of the at least one storage medium. The information may include access information. The information may include error tolerance information. The information may include data attribute information. The information may include data type information. The controller may be configured to determine the information based, at least in part, on the reclaim unit handle. The controller may be configured to receive an indicator that may be separate from the reclaim unit handle, and determine the information based, at least in part, on the indicator.

Systems, methods, and devices for reclaim unit formation and selection in a storage device

A system and method for host provided address translation cache prepopulation. In some embodiments, the method includes: receiving, by a persistent storage device, a first address translation cache entry; receiving, by the persistent storage device, an input-output command; and executing the input-output command, by the persistent storage device, the executing of the input-output command including performing direct memory access of a memory location at an address calculated based on the input-output command and based on the first address translation cache entry.

Systems and methods for address translation

An apparatus may include a device including a first controller, and a second controller, wherein the device may be configured to receive, using the first controller, data, apply, to the data, a first protection scheme, and send, from the device, using the second controller, the data having a second protection scheme. The first protection scheme and the second protection scheme may be the same. The second controller may be configured to apply, to the data, the second protection scheme. The first protection scheme may include a first salt, and the second protection scheme may include a second salt. The first salt may be determined by the device, and the second salt may be determined by a user. The method may further include applying, at the device, to controller state information for the first controller, a third protection scheme to generate controller state information having the third protection scheme.

Systems, methods, and apparatus for protection for device data transfers

One or more embodiments of the present disclosure are directed to systems and methods for host and device cooperation. In some embodiments, a storage device comprises a first memory for storing data; a second memory configured with a cache coherent protocol; and a processing circuit coupled to the first memory and the second memory. The processing circuit is configured to: store, in the second memory, information for managing the storage device, wherein the information is shared with a computing device via the cache coherent protocol; receive a first value from the computing device, the first value associated with a first block of the first memory; and take an action with respect to the first block based on the first value, wherein the action is for managing the first memory.

Systems and methods host and device cooperation for managing a memory of the device

A method may include receiving, at a device, an indication based on an entry submitted to a queue, obtaining, based on the indication, a measurement for the entry, encoding the measurement to generate an encoded measurement, and storing the encoded measurement. The encoding may include one or more of delta encoding, entropy encoding, or run length encoding. The method may further include modifying the measurement based on a status of the queue. The status of the queue may include an amount of entries in the queue, and the modifying the measurement may include setting the measurement to a value. The status of the queue may include an empty queue, and the modifying the measurement may include resetting the measurement. The encoding may include encoding based on one or more parameters. The method may further include determining at least one of the one or more parameters.

Systems, methods, and devices for queue entry monitoring

Provided is a method for managing a data migration operation, including creating, by a storage device, a read submission queue entry indicating a location of data at a source storage of the storage device to be copied from the source storage to a target storage, the read submission queue entry including a field including metadata including information for reading the data from the source storage.

Prepopulating commands at a storage device for accelerated host-issued live migration of storage data

A method includes sending an enumeration of a resource unit of the computing device to a first computing system tenant and to a second computing system tenant. The enumeration is sent through a first protocol and indicating a managing protocol associated with managing the resource unit. The method further includes receiving a first request from the first computing system tenant to reserve the resource unit. The first request is received through the managing protocol. The method further includes receiving a second request from the second computing system tenant to reserve the resource unit. The second request is received through the managing protocol. The method further includes sending, to the second computing system tenant, an indication that the resource unit is reserved by the first computing system tenant. The indication is sent through the managing protocol.

Systems and methods for storage device resource management

A storage device may include at least one storage medium, and a controller that may include at least one processor configured to perform an update operation associated with a reclaim unit handle that references at least one reclaim unit of the at least one storage medium, read, based on the update operation, data from a first reclaim unit of the at least one storage medium, and write, based on the update operation, the data to a second reclaim unit of the at least one storage medium. Based on the update operation, the second reclaim unit may be associated with the reclaim unit handle. The first reclaim unit may be associated with the reclaim unit handle. The reclaim unit handle may be a first reclaim unit handle, and the first reclaim unit may be associated with a second reclaim unit handle.

Systems, methods, and devices for using a reclaim unit based on a reference update in a storage device

Provided is a method for communicating information, the method including determining, by a storage device, that a first region of a source storage includes a storage location including data to be copied from the source storage to a target storage, the first region having a size that is equal to a first granularity size, determining, by the storage device, that a second region within the first region includes the storage location, the second region having a size that is equal to a second granularity size that is less than the first granularity size, determining that the second region is associated with a threshold value, exiting a query pattern that includes the first granularity size and the second granularity size, and sending a results data structure indicating that the second region comprises the storage location.

Communicating information for performing a live migration using recursive large-to-small-granularity querying

A method may include accessing, by a first apparatus, a queue, wherein the queue may be accessible by a second apparatus, and the first apparatus may be connected to the second apparatus by a coherent interface, and indicating, by the coherent interface, to the second apparatus, the accessing. The indicating may include indicating by a monitoring mechanism. The indicating may include generating a monitoring request. The indicating may include generating, based on the monitoring request, an alert. The queue may include a submission queue. The queue may include a completion queue. The accessing may include reading an entry from the queue. The accessing may include writing an entry to the queue. The entry may include a command. The entry may include a completion. The first apparatus may include a host, and the second apparatus may include a device. The queue may be located at the host.

Systems, methods, and devices for queue management with a coherent interface

A method and a memory device are provided. A controller of the memory device retrieves a first command from a host memory. The controller stores a first identifier of the first command in a set-aside buffer of the memory device. The controller retrieves a second command from the host memory. The controller initiates processing of the first command and the second command based on a second identifier of the second command corresponding to the first identifier.

Method and memory device for atomic processing of fused commands

The present disclosure generally relates to methods of operating storage devices. The storage device comprises a controller comprising first random access memory (RAM1), second random access memory (RAM2), and a storage unit divided into a plurality of streams. When a write command is received to write data to a stream, change log data is generated and stored in the RAM1, the previous delta data for the stream is copied from the RAM2 to the RAM1 to be updated with the change log data, and the updated delta data is copied to the RAM2. The delta data stored in the RAM2 is copied to the storage unit periodically. The controller tracks which delta data has been copied to the RAM2 and to the storage unit. During a power failure, the delta data and the change log data are copied from the RAM1 or the RAM2 to the storage unit.

Data integrity protection of SSDs utilizing streams

The present disclosure generally relates to methods of operating storage devices. The storage device comprises a controller and a media unit. The capacity of the media unit is divided into a plurality of zones. The controller is configured to make informed use of errors by update zone metadata to indicate one or more first logical block addresses were skipped and to indicate the next valid logical block address is available to store data. The controller is further configured to update zone metadata to recommend to the host device to reset one or more full zones, to recommend to the host device to transition one or more open zones to a full state, to alert the host device that one or more open zones have been transitioned to the full state, and to notify the host device of the writeable zone capacity of each of the plurality of zones.

Zoned namespaces in solid-state drives

Growing community of inventors

Broomfield, CO, United States of America

Daniel Lee Helmick