Sandisk Technologies Inc.

Sebastien Andre Jean

Yehuda Hahn

Eran Erez

David Chaim Brief

Lee M Gavens

Neil David Hutchison

Noga Deshe

Nagdi Tafish

Yan Nosovitsky

Lilia Brechman

Yaron Zamir

A data storage device includes a non-volatile memory and a controller coupled to the non-volatile memory. The controller is configured to receive a first command from an access device, the first command associated with a first logical block address (LBA). The controller is also configured to, after receiving the first command, receive a second command and a third command from the access device. The second command is associated with a second LBA that precedes the first LBA, the third command is associated with a third LBA that succeeds the first LBA. The controller is further configured to determine that the first command, the second command, and the third command correspond to a sequential command stream.

Detection of a sequential command stream

Embodiments for generating and using an enhanced initialization vector are disclosed. In one embodiment, data and a record identifier to which the data is to be written are received. An initialization vector for encrypting the data is then generated. The initialization vector is based on the record identifier and a value that changes every time that the record identifier is to be written to. The value can be generated, for example, by a counter that increments every time the record identifier is to be written to or by a random number generator that generates a random number every time the record identifier is to be written to. In some embodiments, the generated initialization vector is also based on a second value, such as, for example, a value that is shared by other storage modules or a value that is unique to the storage module.

Generating and using an enhanced initialization vector

Methods, systems, and computer readable media for providing a flexible host memory buffer are disclosed. One method includes allocating an amount of host memory as a host memory buffer accessible by a solid state drive (SSD) as a cache for SSD data. The method further includes caching data from the solid state drive in the host memory buffer. The method further includes monitoring utilization of the host memory buffer. The method further includes dynamically increasing or decreasing the amount of host memory allocated for the host memory buffer based on the utilization.

Methods, systems, and computer readable media for providing flexible host memory buffer

Systems, methods, and apparatuses are provided to obtain diagnostic information from a storage device. A read command may be transmitted to a storage device, where the read command conforms to a block level storage protocol and is directed to an unused logical unit of storage memory included in the storage device, to an invalid logical block address, and/or to a mode page. The unused logical unit may be a predetermined logical unit of the storage memory that is not allocated by a file system. Diagnostic data may be received from the storage device in response to the read command. The diagnostic data may be information related to operation of the storage device and/or a component of the storage device.

Obtaining diagnostic information through host interfaces

Growing community of inventors

Boise, ID, United States of America

Sebastien Andre Jean