Micron Technology Incorporated

Seagate Technology Incorporated

Michael B Danielson

Paul A Suhler

Robert W Strong

Daniel J Hubbard

Stephen P Van Aken

Kenny T Coker

Jeffrey L McVay

Jonathan Tanguy

Ram Krishan Kaul

David A Pohm

Jeffrey Munsil

James H Meeker

Monty Aaron Forehand

Manuel A Offenberg

Patrick T Caraher

Christopher J DeMattio

James Carl Hatfield, Jr

Jason R Cox

A processing device of a memory sub-system is configured to receive, from a host system, host data to be stored at a memory sub-system in an encrypted form; determine that the host data exceeds a threshold size associated with an encryption operation; separate the host data into a plurality of segments based on the threshold size associated with the encryption operation; determine that a particular segment of the plurality of segments does not satisfy a size requirement of data associated with the encryption operation; modify the particular segment to satisfy the size requirement of data associated with the encryption operation; encrypt each of the plurality of segments based on the encryption operation; and store the encrypted plurality of segments at the memory sub-system.

Modification of a segment of data based on an encryption operation

The present disclosure includes apparatuses and methods for directed sanitization of memory. One example method comprises, responsive to receiving a sanitization command, performing a deterministic garbage collection operation on a memory, wherein performing the deterministic garbage collection operation results in physical erasure of all invalid data stored on the memory without losing valid data stored on the memory.

Directed sanitization of memory

A data storage device is provided. The data storage device includes a storage medium having a first subset configured to store user data and a second subset configured to store snapshot data. The data storage device further includes a controller configured to (i) receive, from a host operably coupled to the data storage device, a command to configure the second subset, to (ii) verify an authenticity of the command, and to (iii) execute the command in response to the verification of the authenticity of the command.

Secure snapshot management for data storage devices

An example method of encoding data attributes by data stream identifiers includes: receiving, by a controller managing a memory device, a write command, wherein the write command specifies a first data item and an identifier of a data stream, wherein the data stream comprises the first data item and a second data item; determining, by parsing the identifier of the data stream, a data attribute encoded by the identifier of the data stream, wherein the data attribute is shared by the first data item and the second data item; determining, using the data attribute, a storage operation parameter; and transmitting, to the memory device, an instruction specifying the first data item and the storage operation parameter.

Parsing stream identifiers to determine data stream attributes

A processing device receives a first instruction specifying that first data is to remain on a first memory device of a plurality of memory devices, the first memory device comprising a first media having a first media type. The processing device further receives a second instruction specifying, based on one or more criteria, that second data is to be moved from the first media having the first media type to a second memory device of the plurality of memory devices, the second memory device comprising a second media having a second media type that is different than the first media type. The processing device further controls the first and second data in the plurality of memory devices based on the first instruction and the second instruction.

Allocating variable media types of memory devices in a memory system

An example method of encoding data attributes by data stream identifiers may include: receiving a plurality of data items to be written to a storage device; identifying, among the plurality of data items, a first data item and a second data item sharing a data attribute; generate a data stream identifier comprising an encoded form of the data attribute; and transmitting, to a controller of the storage device, one or more write commands comprising the first data item and the second data item, wherein each write command further specifies the data stream identifier.

Encoding data attributes by data stream identifiers

A first set of characteristics corresponding to a first memory device and a second set of characteristics corresponding to a second memory device are received. A first usage threshold for the first memory device based on the first set of characteristics and a second usage threshold for the second memory device based on the second set of characteristics are determined. Data is stored at the first memory device or the second memory device based on the first usage threshold for the first memory device and the second usage threshold for the second memory device.

Managing a memory system including memory devices with different characteristics

A method includes receiving an indication of an operational mode for a memory system including a set of memory devices. A first memory device of the set of memory devices includes a first media having a first media type and a second memory device of the et of memory devices includes a second media having a second media type that is different than the first media type. The method also includes allocating, by a processing device, a first portion and a second portion of the first memory device based on the operational mode for the memory system. The method also includes storing data at the first portion of the first memory device, the second portion of the first memory device, or the second memory device based on the operational mode for the memory system.

Host data can be received at a memory sub-system. A determination can be made that the host data exceeds a threshold size associated with an encryption operation. The host data can be separated into segments based on the threshold size associated with the encryption operation. Each of the segments can be encrypted based on the encryption operation. Furthermore, the encrypted segments can be stored at the memory sub-system.

An example method can include, responsive to receiving a sanitization command, performing a deterministic garbage collection operation on a memory. The deterministic garbage collection operation performed on the memory can result in physical erasure of all invalid data stored on the memory without losing valid data stored on the memory.

Host- directed sanitization of memory

An example method of determining storage operation parameters based on data stream attributes may include: receiving, by a controller, a write command specifying a data item and an identifier of a data stream comprising the data item, wherein a part of the identifier of the data stream encodes a data attribute shared by data items comprised by the data stream; determining, using the data attribute, a storage operation parameter; and transmitting, to a memory device, an instruction specifying the data item and the storage operation parameter.

Utilizing write stream attributes in storage write commands

A device under test for performing built-in self-tests to determine the functionality of one or more components of the device under test is described. The device under test includes a storage location to store a set of tests for testing the device under test; a data generator to generate a test pattern based on a test in the set of tests; a transmission unit to transmit the test pattern to a test system; a receiver unit to receive a set of loopback signals from the test system, wherein the set of loopback signals represent the test pattern; and a data checker to determine success or failure of the device under test based on the set of loopback signals.

Protocol independent testing of memory devices using a loopback

An apparatus for performing secure operations with a dedicated secure processor is described in one embodiment. The apparatus includes security firmware defining secure operations, a processor configured to execute the security firmware and perform a set of operations limited to the secure operations, and a plurality of secure hardware registers, accessible by the processor and configured to receive instructions to perform the secure operations, An apparatus for performing secure operations with a plurality of security assist hardware circuits is described in another embodiment. The apparatus comprises one or more secure hardware registers configured to receive a command to perform secure operations and one or more security assist hardware circuits configured to perform discrete secure operations using one or more secret data objects.

Growing community of inventors

Georgetown, TX, United States of America

Michael B Danielson