Western Digital Technologies, Inc.

Sandisk Technologies Inc.

Sensormatic Electronics Corporation

Ping Identity Corporation

General Electric Company

Synopsys, Inc.

Avago Technologies General IP (singapore) Pte. Ltd.

Transportation IP Holdings, LLC

Cytiva Sweden Ab

Microsoft Technology Licensing, LLC

Sap Se

Jpmorgan Chase Bank, N.a.

Oracle America, Inc.

Ge Healthcare Bio-sciences Ab

Powerhouse Engine Solutions Switzerland IP Holding Gmbh

Amit Kumar Sharma

Dinesh Kumar Agarwal

Abhinandan Venugopal

Klaus Gebauer

Udayakumar Subbarayan

Bernard Harguindeguy

Yasar Kundottil

Avinash Kumar Sahu

Ajit S Vernekar

Nachiket Karmarkar

Sasi Kumar Nutalapati

Isidore Rosenblum

Fredrik Oskar Lundstrom

Aditya Gunuganti

Amit Kumar Singh

Sourabh Sankule

Mats Olsson

Akhilesh Yadav

Vijayaselvan Jayakar

Ashish Kumar Jain

Trideep Singh

Chetan Agrawal

Karl Axel Jakob Liderfelt

Supti Datta

Jennifer Anne Lachapelle

Jean Pierre Neff

Eran Sharon

Yehuda Hahn

Alexander Bazarsky

Ran Zamir

Daniel Edward Loringer

Rodrigo Rodriguez Erdmenger

Rakesh Kumar

Kendall Swenson

Sandeep Kanzal Venkatesha

Vinayak Bhat

Lukas William Johnson

Vijay Chinchole

Jason M Lymangrover

Aditya Vithal Nori

Jonathan Nagurney

Bharath Venkatakrishnan

Sanketh Bhat

Sarthak Mahapatra

Shruti Shrikant Tople

Hans P Nirmal

Sushant Paul

Desh Sharma

Sharath Shivakumar

Vineet Agarwal

Sweety Jeswani

Raj Shekher Mitra

Sherwin Varghese

Karl Liderfelt

Kriti Agarwal

Niharika Jain

Marilyn Pulinthitta

Devika Nair

Anindita Chakrabarty

Yatishkumar Ravinath Pokale

B Parthasarathy

Shubhendu Konar

Mahesh Nagaraju

Kiran B Dalvi

Swaminathan Gopalakrishnan

Sangeetha Raghu Ramachandran

Suraj Kumar Verma

Jakob Liderfelt

Rajan Thiyaga

Rohith Ms

Prashanth Srinivasa

Niranjana Bhatta

Anirban Chakraborty

Thiyaga Rajan

A data storage device and method for efficient data-storage-device-to-data-storage-device copying are disclosed. In one embodiment, a data storage device is provided comprising a memory and one or more processors. The one or more processors, individually or in combination, are configured to: receive, from a host, a command to place the data storage device in a data-storage-device-to-data-storage-device copy mode; receive, from a source data storage device via the host, a plurality of blocks of data and logical-to-physical address translation information for the plurality of blocks of data; and write, in the memory, the plurality of blocks of data and the logical-to-physical address translation information for the plurality of blocks of data without creating parity information or new logical-to-physical address translation information for the plurality of blocks of data. Other embodiments are provided.

Data storage device and method for efficient data-storage-device-to-data-storage-device copying

Techniques are provided for optimizing the power consumption of a data storage device included in a battery-operated device. The battery-operated device (e.g., portable devices like wearable devices, smartwatches, and mobile phones) can access certain data stored on the data storage device more frequently when the device operates on battery power as compared to when the device does not operate on battery power. Techniques are provided for identifying and classifying data into different classifications, for example, power sensitive data and non-power sensitive data. Then the device can optimize the battery power consumption of the data storage device by storing or relocating data stored at the data storage device based on the classification of the data.

Storage power reduction in battery-operated devices

A data storage device and method for enhancing fault tolerance are disclosed. In one embodiment, a method is provided that is performed in a host in communication with first and second data storage devices. The method comprises: determining whether a condition under which primary and secondary copies of data are to be written to the first and second data storage devices, respectively, presents a relatively-high risk of loss of both the primary and secondary copies of the data; and in response to determining that the relatively-high risk is presented, causing the primary and secondary copies of the data to be written differently in the first and second data storage devices, respectively. Other embodiments are provided.

Data storage device and method for enhancing fault tolerance

A data storage device and method for delaying execution of a host write command to perform an internal memory operation. In one embodiment, a data storage device is provided comprising a memory with single-level cell (SLC) blocks and multi-level cell (MLC) blocks, as well as a controller. The controller is configured to store, in a queue, a plurality of write commands received from a host, wherein each write command is associated with a timeout window; determine how long each of the plurality of write commands has been pending in the queue; and for each write command, delay execution of the write command within the write command's timeout window until the write command has been pending in the queue for a specified amount of time, wherein delaying execution of each write command provides the controller with time to perform a memory operation to increase an amount of available SLC blocks in the memory. Other embodiments are provided.

Data storage device and method for delaying execution of a host write command to perform an internal memory operation

A multi-protocol data storage device can be configured to be backwards compatible with multiple protocol versions. Each protocol version can have a different power requirement, which can result in the inability to power all of the memory dies. In some situations, it is desired to perform program operations on different meta blocks of memory. To help ensure that the program operations are performed on the same memory die when not all of the memory dies are powered, one of the program operations can be performed in a first meta block, and the other program operation can be performed in a selected smaller meta block that shares a powered memory die in common with the first meta block.

Multi-protocol data storage device and method for sustained write performance

Systems, methods, and data storage devices for dynamic mode selection for hybrid MLC/SLC data storage devices are described. Storage operations at a plurality of storage devices from a host device may be processed, wherein each storage device of the plurality of storage devices comprises a plurality of partitions including multi-level cell blocks and single-level cell blocks and multi-level cell blocks may be selectively written in a single-level write operation. A usage value is determined for each partition of the plurality of partitions at each storage device of the plurality of storage devices. A storage device of the plurality of storage devices may be dynamically selected based on the usage value for single-level cell blocks of the selected storage device having available single level cell blocks. New data may then be stored at the dynamically selected storage device of the plurality of storage devices.

Dynamic mode selection for hybrid single-level cell and multi-level cell data storage devices

A data storage device receives a speculative read command from a host identifying logical block addresses. The speculative read command is not required be to executed within a certain amount of time or even at all. The data storage device at least partially executes the speculative read command in response to determining that such execution will not reduce performance of the data storage device. At least partially executing the speculative read command causes data associated with at least some of the logical block addresses to be read from the non-volatile memory and stored in at least one buffer. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.

Data storage device and method for executing a low-priority speculative read command from a host

Aspects directed toward data storage management are provided. A storage management device is connected to data storage devices (DSDs) that form a virtual storage pool (VSP), where the storage management device is configured to increase the overall performance of the VSP, as well as the lifespans of the individual DSDs. The storage management device can be configured to learn about the over-provisioning (OP) information of each DSD and strategically select the DSD to send write commands or data based on the OP information. The storage management device can be configured to borrow spare OP capacity from a DSD and use the borrowed capacity to expand the exported/logical capacity of the DSD.

Storage device pool management based on over-provisioning

A host can write data to and/or read data from a memory in a data storage device. In addition to writing host data in the memory, the data storage device can perform internal data movement/relocation (e.g. for wear leveling). The data storage device and method provided herein can balance host writes and relocation operations in multiple meta die systems by reducing the number of open blocks across the system.

Data storage device and method for multiple meta die balancing

Aspects of the disclosure relate to improved techniques for managing a data storage device (DSD) pool, and in particular the selecting of DSDs based on commands distribution and latencies among the command queues in the DSDs. In some aspects, a DSD may have multiple queues that enable the DSD to perform certain commands (e.g., write commands and/or read commands) in parallel. Thus, such DSD has various head-of-line blocking latencies based on which queue the command is directed to. A storage management device can reduce the command latency of the DSDs, for example, based on queue information (e.g., head-of-line blocking, parallel queue utilization, etc.) learned from the DSDs.

Storage device pool management based on storage device queue usage

Coolant apparatus

A data storage device and method for host-assisted improved error recovery using a correlation factor are provided. In one embodiment, the data storage device receives, from a host, an indication that data associated with a first logical address is correlated with data associated with a second logical address; determines a correlation factor based on a degree of correlation between the data associated with the first logical address and the data associated with the second logical address; and in response to the correlation factor being above a threshold: stores the data associated with the first logical address and the data associated with the second logical address in different regions of the memory having different bit error rates; and uses the data associated with the first logical address to assist in correcting an error in the data associated with the second logical address. Other embodiments are provided.

Data storage device and method for host-assisted improved error recovery using a correlation factor

A data storage device and method are provided for predictable low-latency in a time-sensitive environment. In one embodiment, a data storage device is provided comprising a memory and a controller configured to communicate with the memory. The controller is further configured to: receive, from a host, an indication of a logical block address range that the host will later read; and in response to receiving the indication: read data from the logical block address range; and perform an action on the data to reduce a read latency when the host later reads the logical block address range. Other embodiments are disclosed.

Data storage device and method for predictable low-latency in a time-sensitive environment

In a non-volatile memory system that initially writes data in a binary format and then folds the stored data into a multi-level format, transfers of host data from the memory controller to the memory dies of the system are performed during both foggy and fine phases of the multi-level programming as data latches are released, allowing the transfer times to be hidden behind the programming. To improve data throughput one sub-set of the memory dies perform their foggy phase programming while another sub-set of the memory dies perform their fine phase programming, resulting in non-overlapping transfer windows for host data transfers for the two sub-sets of memory dies.

Folding ordering scheme for improved throughput in non-volatile memory

A data storage device and method for host-assisted efficient handling of multiple versions of data are provided. In one embodiment, a data storage device is provided comprising a memory and a controller. The controller is configured to receive, from a host, identification of different versions of data that are to deleted together, store the different versions of the data in areas of the memory that are erasable in parallel; receive, from the host, a command to erase the different versions of the data; and erase the different versions of the data in parallel. Other embodiments are provided.

Data storage device and method for host-assisted efficient handling of multiple versions of data

Growing community of inventors

Bengaluru, India

Amit Kumar Sharma