Sandisk Technologies Inc.

Western Digital Technologies, Inc.

Sandisk Il Ltd.

Eyal Sobol

Omer Gilad

Liat Hod

Tal Shaked

Yehuda Hahn

Boris Dolgunov

David Matot

Vered Babayov

Alexander Bazarsky

Dudy David Avraham

Karin Inbar

Yacov Duzly

Idan Goldenberg

Einav Zilberstein

Mahmud Asfur

Oren Shmuel Cohen

Alex Lemberg

Daniel Moshe Pfeffer

Yuliy Izrailov

Nir Ofek Paz

Zevulun Einat Inna

Uma Gaddale

Avi Shchislowski

Tai Shaked

Martin Booth

A host sends a storage system a command to read data from a memory and then a command to write the data back to the memory to defragment the data. The host sends flags along with the commands. The flag sent with the read command causes the storage system to take a snapshot of the logical-to-physical address map relevant to the data. The flag sent with the write command causes the storage system to compare the snapshot with the current version of the logical-to-physical address map and write the data back to the memory only if there is a match.

Storage system and method for non-blocking coherent re-writes

A method and system for visualizing sleep mode inner state processing are provided. In one embodiment, a method is provided that is performed in a computing device in communication with a storage system comprising a memory. The method comprises receiving information from the storage system concerning a number and duration of tasks performed by the storage system to exit a sleep mode; and displaying a visualization of the information. Other embodiments are provided.

Method and system for visualizing sleep mode inner state processing

A method and system for visualizing a correlation between host commands and storage system performance are provided. In one embodiment, a method comprises receiving information concerning host operations of a host performed over a time period; receiving information concerning storage system operations of a storage system performed over the time period; and simultaneously displaying both the host operations and the storage system operations over the time period. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.

Method and system for visualizing a correlation between host commands and storage system performance

A storage device comprising a memory, a controller, and a host interface operative to connect with a host. The memory containing data locations access to which are controllable by a protection application which is executable on a host. When the host interface operatively coupled to a host data locations in the memory are accessible to an operating system of the host only under permission from the protection application. The controller communicates with the protection application running on the host for allowing the protection application access to data locations in the memory. Upon a host request for access to a data location, the controller determines if permission to access the requested data location is acquired from the protection application. The permission is based on determination of the protection application that the data location does not contain malicious data harmful to the host operating system, to any application and/or to any data on the host.

Preventing access of a host device to malicious data in a portable device

A black box recorder for an autonomous vehicle includes an interface configured to receive data from an engine control unit (ECU) device. The data includes first data and second data. The black box recorder further includes an error correction code (ECC) engine configured to determine a first parity size associated with the first data based on a characteristic of the first data and a second parity size associated with the second data based on a characteristic of the second data. The first parity size is different than the second parity size. The ECC engine is further configured to generate a convolutional low-density parity-check (CLDPC) codeword that includes the first data, the second data, first redundancy data associated with the first data, and second redundancy data associated with the second data. The first redundancy data has the first parity size, and the second redundancy data has the second parity size.

Variable length CLDPC encoder and method of operation in an autonomous vehicle

A method and system for write amplification analysis are provided. In one embodiment, a method is provided that is performed in a computing device. The method comprises determining an amount of data written from the computing device to a storage system over a time period, wherein the storage system comprises a memory; determining an amount of data written to the memory by the storage system over the time period; calculating a write amplification factor over the time period; and simultaneously displaying graphs of the amount of data written from the computing device over the time period, the amount of data written to the memory over the time period, and the write amplification factor over the time period. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.

Method and system for write amplification analysis

A method and system for interactive aggregation and visualization of storage system operations are provided. In one embodiment, the method is performed by a server in communication with a client and comprises: receiving, from the client, data regarding storage system operations that were performed by a storage system over time, wherein each storage system operation is classified according to an operation type; receiving, from the client, a size of a graph to be displayed on the client's display device to visualize the storage device operations, wherein the size of the graph is defined by a number of tiles; for each tile, aggregating the storage system operations by operation type and identifying a dominant operation type; and sending, to the client, the identified dominant operation type for each tile. Other embodiments are provided.

Method and system for interactive aggregation and visualization of storage system operations

A storage device and method for enabling hidden functionality are provided. In one embodiment, a storage device is provided comprising an interface a memory, and a controller. The controller is configured to receive a series of read and/or write commands to the memory from the host device. If the series of read and/or write commands received from the host device matches an expected pattern of read and/or write commands, irrespective what data is being read or written by those commands, the controller enables a special functionality mode of the storage device. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.

Storage device and method for enabling hidden functionality

Methods and systems are provided where a memory controller for non-volatile memory transfers data to and from random access memory over a second double data rate bus, and a host system access the random access memory over a first double data rate bus. The memory controller may transfer the data in response to a command received by the memory controller from a host system via a block storage protocol bus. Alternatively or in addition, the memory controller may transfer the data as part of caching data internal to the non-volatile memory.

Block storage protocol to RAM bypass

A method and storage device for assessing execution of trim commands are provided. In one embodiment, a trace of trim and write commands sent to a storage device are obtained. For each trim command in the trace, a subsequent write command to a same logical block address (LBA) as the trim command is identified, and an elapsed time between the trim and write commands is calculated. This information can be used to display a histogram and/or to optimize when the storage device executes trim commands and/or when the host device issues trim commands.

Method and storage device for assessing execution of trim commands

A first storage device provides a host device with access to a private memory area by communicating a password between the first storage device and a second storage device via the host device using a double-encryption scheme. In one embodiment, a host device receives a twice-encrypted password from a first storage device, sends the twice-encrypted password to a second storage device, receives a once-encrypted password from the second storage device, decrypts the once-encrypted password to obtain the password, and sends the password to the first storage device. In another embodiment, a first storage device sends a twice-encrypted password to a host device, receives the password from the host device after the twice-encrypted password is decrypted by a second storage device and the host device, and provides the host device with access to the private memory area only if the password matches one that is stored in the first storage device.

Growing community of inventors

Giv′at-Shmuel, Israel

Eyal Sobol