Western Digital Technologies, Inc.

Sandisk Technologies Inc.

Amir Shaharabany

Hadas Oshinsky

Rotem Sela

Alon Marcu

Yacov Duzly

Tal Heller

Miki Sapir

Eliad Adi Klein

Marina Frid

Igor Genshaft

Einav Zilberstein

Yoav Markus

Einat Inna Zevulun

Shay Vaza

Eran Sharon

Yehuda Hahn

Liran Sharoni

Michael Zaidman

James Fitzpatrick

Ran Zamir

Stella Achtenberg

Mark Shlick

Arseniy Aharonov

Opher Lieber

Eyal Ittah

Yigal Eli

Elad Baram

Mikhael Zaidman

Enosh Levi

Adir Moshen HaCohen

Ivo Faldini

Adir Moshe HaCohen

Rafi Abraham

Asaf Garfunkel

Andrew Henry

Akiva Bleyer

The present disclosure generally relates to more efficient use of a delta buffer. To Utilize the delta buffer, an efficiency can be gained by utilizing absolute delta entries and relative delta entries. The absolute delta entry will include the type of delta entry, the L2P table index, the L2P table offset, and the PBA. The relative delta entry will include the type of delta entry, the L2P table offset, and the PBA offset. The relative delta entry will utilize about half of the storage space of the absolute delta entry. The relative delta entry can be used after an absolute delta entry so long as the relative delta entry is for data stored in the same block as the previous delta entry. If data is stored in a different block, then the delta entry will be an absolute delta entry.

Creating and using delta L2P entries

The present disclosure generally relates to more efficient use of a delta buffer. To utilize the delta buffer, an efficiency can be gained by utilizing absolute delta entries and relative delta entries. The absolute delta entry will include the type of delta entry, the L2P table index, the L2P table offset, and the PBA. The relative delta entry will include the type of delta entry, the L2P table offset, and the PBA offset. The relative delta entry will utilize about half of the storage space of the absolute delta entry. The relative delta entry can be used after an absolute delta entry so long as the relative delta entry is for data stored in the same block as the previous delta entry. If data is stored in a different block, then the delta entry will be an absolute delta entry.

Delta L2P entry usage

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 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.

The present disclosure describes technologies and techniques for use by a data storage controller&#x2014;such as a controller for use with a NAND or other non-volatile memory (NVM)&#x2014;to provide a user-expandable memory space. In examples described herein, a customer may choose to purchase access to only a portion of the total available memory space of a consumer device, such as a smartphone. Later, the customer may expand the user-accessible memory space. In one example, the customer submits suitable payment via a communication network to a centralized authorization server, which returns an unlock key. Components within the data storage controller of the consumer device then use the key to unlock additional memory space within the device. In this manner, if the initial amount of memory the consumer paid for becomes full, the consumer may conveniently expand the amount of user-accessible memory.

Expandable memory for use with solid state systems and devices

Storage delta compression

In one non-limiting embodiment, a method is disclosed for performing a storage device operation on a die is provide having steps of choosing a storage device operation to perform, estimating which die is related to the storage device operation chosen to be performed and performing the storage device operation at the die based on the estimating.

Storage device operations using a die translation table

A storage system and method for thin provisioning are provided. In one embodiment, a storage system is provided comprising a memory and a controller. The controller is configured to provide a logical exported capacity of the memory to a host, wherein the logical exported capacity is greater than an actual storage capacity of the memory; receive a command from the host to write data to a logical address; determine whether there is available actual storage capacity in the memory to write the data; and write the data to a physical address in memory that corresponds to the logical address only if it is determined that there is available actual storage capacity in the memory to write the data. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.

Storage system and method for thin provisioning

The disclosure relates to optimizing a mount process at a data storage device. The storage device communicates with a host using a mount process and mounts a master table, the master table caching translation table pointers associated with a boot partition. The storage device then sends a ready signal to the host indicating that the storage device is ready to receive a boot partition read command from the host. The storage device suspends the mount process for a window of time to receive the boot partition read command and executes the boot partition read command if the boot partition read command is received during the window of time. Accordingly, by caching boot partition pointers in the master table, the mount time of the boot partition is shortened to allow the storage device to send the ready signal earlier and provide the host with earlier access to the boot partition.

Method for fast boot read

A memory device is embedded in (or connected to) a host device. The memory device includes a first boot partition and a second boot partition. The first boot partition stores first boot data. The second boot partition stores second boot data. The memory device includes a pointer that points to either the first boot partition or the second boot partition. The memory device transfers the first boot data from the first boot partition in response to receiving a boot signal from the host and the pointer pointing to the first boot partition. The host attempts to boot using the first boot data. If the host does not boot successfully from the first boot data then the host is booted from second boot data transferred from the memory device without the host requesting that the pointer switch to pointing at the second boot data.

Non-volatile storage device with multiple boot partitions

Read commands scheduling method in storage device

Apparatuses, systems, and methods are disclosed for log-based storage for different data types in non-volatile memory. An apparatus may include a non-volatile memory element and a controller. A non-volatile memory element may include a first portion of memory, an intermediate storage, and a second portion of memory. A controller may be configured to receive a plurality of data units. A controller may be configured to classify units of data using a first data type and a second data type. A controller may be configured to store a first unit of data having a first data type in a first portion of memory and a second unit of data having a second data type in intermediate storage. Further, a controller may relocate a second unit of data to a second portion of memory.

Log-based storage for different data types in non-volatile memory

Aspects of the disclosure provide for distributed flash interface module (FIM) processing in a solid state drive (SSD). Methods and apparatus lock a queue and retrieve a command from the queue. The command indicates an operation to be executed in conjunction with one or more non-volatile (NVM) dies of the SSD. The methods and apparatus then lock a NVM interface corresponding to the one or more NVM dies, determine whether the operation is a transfer operation, and execute the operation using the locked NVM interface according to whether the operation is the transfer operation. When the operation is determined to be the transfer operation, the queue is unlocked to allow execution of a second operation from the queue by a second controller in parallel with the operation executed by the controller. Thereafter, the NVM interface is unlocked after execution of the operation is complete.

Distributed flash interface module processing

Growing community of inventors

Kochav Yair, Israel

Amir Shaharabany