Sandisk Technologies Inc.

Western Digital Technologies, Inc.

Sandisk Il Ltd.

Itshak Afriat

Yehuda Hahn

Shay Benisty

Menahem Lasser

Alon Marcu

Opher Lieber

Eran Sharon

Idan Alrod

Nima Mokhlesi

Ariel Navon

Karin Inbar

Mark Shlick

Ishai Ilani

Alex Bazarsky

Arseniy Aharonov

Asaf Gueta

Inon Cohen

Gen Pei

Lanlan Gu

Erez Frank

LanLan Gu

Rotem Bahar

Oran DeBotton

Tzachy Yizhaki

A system and method for reducing performance penalties of a host that is supplying a host memory buffer (HMB) for use by a storage device. The method may include modeling desired HMB access timing by the storage device in an initial offline analysis for multiple classes of workloads, periodically updating the access timing data stored in the storage device based on actual use and using the current HMB access timing information to modify storage device access to the HMB on the host. The system may include a storage device controller that quantifies different HMB access timing for different host workloads based on individual HMB regions.

Adaptive device quality of service by host memory buffer range

A method and apparatus for selecting power states in storage devices for computers including providing monitoring storage device parameters and comparing those parameters to endurance thresholds to increase reliability of the storage device.

Method and apparatus for selecting power states in storage devices

A device includes a non-volatile memory, first circuitry configured to communicate with the non-volatile memory, and second circuitry configured to communicate with an access device. The second circuitry is configured to retrieve data and metadata associated with the data from a volatile memory of the access device based on a request for the data. The request is received from the first circuitry and includes a first identifier. The metadata includes a second identifier. The second circuitry is further configured to provide at least a portion of the data to the first circuitry in response to the first identifier matching the second identifier.

Data storage at an access device

Systems and methods for performing an adaptive sustain write are disclosed. In one implementation, a controller of a non-volatile memory that is coupled with a host system monitors a rate at which the host system sends user data to the non-volatile memory system for storage and determines that the rate at which the host system sends user data to the non-volatile memory system for storage exceeds a threshold. The controller stores a first portion of the user data in one or more user capacity memory blocks of the non-volatile memory system. Additionally, the controller stores a second portion of the user data in one or more over-provisioning memory blocks of the non-volatile memory system after determining that the rate at which the host system sends data to the non-volatile memory system for storage exceeds the threshold.

Systems and methods for performing an adaptive sustain write in a memory system

In one embodiment, a memory system is provided comprising a volatile memory, a non-volatile memory, and an error correction code (ECC) module. The ECC module is configured to encode, decode, and correct data stored in the volatile memory when the memory system enters and exits a sleep mode and is further configured to encode, decode, and correct data stored in the non-volatile memory when the memory system is in an active mode.

Memory system and method for securing volatile memory during sleep mode using the same ECC module used to secure non-volatile memory during active mode

Methods, apparatus and computer medium for enforcing one or more cache management policies are disclosed herein. In some embodiments, a flash memory of a storage device includes a plurality of flash memory dies each flash memory die including a respective cache storage area and a respective main storage area. A determination is made, for data that is received from an external host device to which main storage area the received data is addressed thereby specifying one of the plurality of flash memory dies as a target die for the received data. Whenever the received data is written into a cache storage area before being written into a main storage area, the received data is written into the cache storage area of the specified target die.

Method and apparatus for enforcing a flash memory caching policy

The non-volatile storage system predicts which blocks (or other units of storage) will become bad based on performance data. User data in those blocks predicted to become bad can be re-programmed to other blocks, and the blocks predicted to become bad can be removed from further use.

Identifying at-risk data in non-volatile storage

A method and system for balancing host write operations and cache flushing is disclosed. The method may include steps of determining an available capacity in a cache storage portion of a self-caching storage device, determining a ratio of cache flushing steps to host write commands if the available capacity is below a desired threshold and interleaving cache flushing steps with host write commands to achieve the ratio. The cache flushing steps may be executed by maintaining a storage device busy status after executing a host write command and utilizing this additional time to copy a portion of the data from the cache storage into the main storage. The system may include a cache storage, a main storage and a controller configured to determine and execute a ratio of cache flushing steps to host write commands by executing cache flushing steps while maintaining a busy status after a host write command.

Method and system for balancing host write operations and cache flushing

Growing community of inventors

Sunnyvale, CA, United States of America

Itshak Afriat