Western Digital Technologies, Inc.

Sandisk Technologies Inc.

Sandisk Il Ltd.

Rotem Sela

Amir Shaharabany

Hadas Oshinsky

Miki Sapir

Eliad Adi Klein

Michael Holtzman

Fabrice Jogand-Coulomb

Ron Barzilai

Einav Zilberstein

Aviad Zer

Enosh Levi

Alon Marcu

Karin Inbar

David Chaim Brief

Asher Druck

Eran Shen

Avraham Shmuel

Moshe Raz

Michael Zaidman

Alexander Lemberg

Paul Yaroshenko

Yehuda Hahn

Ramanathan Muthiah

Kevin M Conley

Julian Vlaiko

Jason T Lin

Donald Ray Bryant-Rich

Boris Dolgunov

Nir Perry

Henry Hutton

Yoav Markus

Opher Lieber

Tal Heller

Eyal Ittah

Yoseph Pinto

Yigal Eli

Tal Rostoker

Niv Cohen

Yonatan Halevi

Alex Lemberg

Meytal Soffer

Mikhael Zaidman

Elad Baram

Joseph E Halpern

Oren N Honen

David Brief

Nadav Neufeld

Mei Yi Madeline Ng

Amir Samuelov

Rafi Abraham

Ido Shilo

Oren Ben Hayun

Noam Even-chen

Yiftach Tzori

A data storage device has a cache and a non-volatile memory. Instead of flushing the entire cache to the non-volatile memory in response to a command from a host, the data storage device flushes only the cached data that is associated with an identifier provided by the host. This allows the cached data associated with the identifier to be flushed more quickly. The data storage device can also prioritize queued commands that are associated with the identifier.

Data storage device and method for reducing flush latency

Zoned memory typically requires write commands to be sent from a host to a data storage device in logical block address (LBA) sequential order. Instead of rejecting out-of-order write commands, the data storage device can execute those commands and internally deal with the out-of-order problem. For example, the data storage device can use a special zone logical-to-physical address table, use a temporary zone data buffer, and/or store a data's LBA in a header for later matching.

Data storage device and method for handling write commands in zoned storage

A mobile data storage device (DSD) incorporating a mobile data storage device (DSD), the mobile DSD comprising a non-volatile storage medium configured to store user data, a data path configured to transmit at least data between the mobile DSD and a host computer system, a housing having a machine readable optical code and a controller. The controller is configured to receive, from the data path, a request to restore the mobile DSD to factory settings. The controller also receives, from the data path, a unique access passcode derived from the machine readable optical code. The controller validates the unique access passcode, and, in response to determining that the unique access passcode is valid, restores the mobile DSD to factory settings.

Restore to factory settings of a mobile data storage device

Disclosed are systems and methods providing active time-based prioritization in host-managed stream devices. The method includes receiving a plurality of host commands from a host system. The method also includes computing active times of open memory regions. The method also includes determining one or more regions that have remained open for more than a threshold time period, based on the active times. The method also includes prioritizing one or more host commands from amongst the plurality of host commands for completion, the one or more host commands having corresponding logical addresses belonging to the one or more regions, thereby (i) minimizing risk to data and (ii) releasing resources corresponding to the one or more regions.

Active time-based command prioritization in data storage devices

A storage system uses blocks of memory that are sized larger than a size of a zone. This means that the storage system stores multiple zones in a given block. Storing zones with different zone properties in a given block can be problematic, so the storage system obtains zone property information for each zone and stores zones with similar zone properties in a given block.

Storage system and method for data placement in zoned storage

A storage system analyzes a logical block address range of data in a resolution of a defragmentation unit. The storage system determines whether a given defragmentation unit is fragmented above a threshold and performs a defragmentation operation accordingly. Additionally or alternatively, the storage system can receive a suggested logical block address read order from a host to improve performance.

Storage system and method for optimizing write-amplification factor, endurance, and latency during a defragmentation operation

A storage system and method for host memory access are provided. In one embodiment, a storage system is configured to receive a write command from a host that is recognized by the storage system as a read host memory command and receive a read command from the host that is recognized by the storage system as a write host memory command. This provides a communication channel that allows the storage system to access the host memory. The storage system can use the host memory as a backup write cache and/or to stream data of different types stored in different areas of the host memory. Hibernation can be avoided, and timeout delays can be ignored. Other embodiments are provided.

Storage system and method for host memory access

A storage system allocates single-level cell (SLC) blocks in its memory to act as a write buffer and/or a read buffer. When the storage system uses the SLC blocks as a read buffer, the storage system reads data from multi-level cell (MLC) blocks in the memory and stores the data in the read buffer prior to receiving a read command from a host for the data. When the storage system uses the SLC blocks as a write buffer, the storage system retains certain data in the write buffer while other data is flushed from the write buffer to MLC blocks in the memory.

Storage system and method for using read and write buffers in a memory

A storage system and method for host memory access are provided. In one embodiment, a storage system is provided comprising a memory and a controller. The controller is configured to receive a write command from the host that is recognized by the storage system as a read host memory command; in response to receiving the write command, send an identification of a location in the host memory to the host; and receive, from the host, data that is stored in the location in the host memory. Other embodiments are provided.

Data may be read from a data storage device using host performance booster (HPB). An encoded HPB entry in a read command provides the PBA (Physical Block Address) as well as the run length. The LBA (Logical Block Address), PBA, and run length are placed in an HPB read buffer table. The HPB read buffer table is located in the host device. When the read command is received by the data storage device, the data storage device reads the LBA, transfer length, and HPB entry from the read command. The HPB entry contains the PBA for the LBA as well as the run length for the data to be read. For non-sequential reads, the HPB contains the LBA, transfer length, and reference to a write buffer table that is stored in the data storage device.

Boosting reads of chunks of data

A hybrid command is proposed for interacting with a non-volatile memory device. The hybrid command enables a host connected to the non-volatile memory device to both send and receive data using a single command, which removes the need to use separate commands for sending and receiving. Using the one command rather than separate commands increases system performance.

Non-volatile storage system with hybrid command

Technology for detecting a capability set of a removable integrated circuit card, such as a removable memory card, is disclosed. The removable integrated circuit card has one or more capability pads that indicate a capability set of the removable integrated circuit card. The physical condition may be a physical configuration of one or more capability pads, such as size or location of a capability pad. A host device is able to determine the capability set of the removable integrated circuit card based on the physical condition of the capability pads. The host device may determine the capability set without the card being powered on, without reading a register in the card, or without exchanging commands with the card.

Pad indication for device capability

An apparatus includes a Replay Protected Memory Block (RPMB) formed in a plurality of non-volatile memory cells. Control circuitry is configured to authenticate access to the RPMB with a plurality of keys. Authentication of write access to the RPMB is through a write key and authentication of read access to the RPMB is through a read key.

Non-volatile memory with replay protected memory block having dual key

Growing community of inventors

Haifa, Israel

Rotem Sela