Micron Technology Incorporated

Luca Bert

Joseph Harold Steinmetz

William Richard Akin

Karl David Schuh

Abdelhakim Alhussien

Ayberk Ozturk

Kumar V K H Kanteti

Sampath K Ratnam

Dheeraj Srinivasan

Daniel J Hubbard

Ali Mohammadzadeh

Various embodiments provide for processing write requests on a memory system based on queue identifiers associated with the write requests. In particular, input data streams can be received and stored by submission queues of a memory system, and write requests in the input data streams can be separated and processed based on queue identifiers associated with the submission queues using an inline approach for writing data on the memory system, an offline approach for writing data on the memory system, or both.

Processing write requests based on queue identifier

The disclosure configures a memory sub-system controller to perform Redundant Array of Independent Disks (RAID) stripe deletion based on physical region size. The controller stores a set of data across a plurality of memory components, a first of the plurality of components being configured to store data in a first set of regions, a second of the plurality of components being configured to store data in a second set of regions. The controller generates a plurality of error correction parity information stripes for multiple collections of the set of data and computes a quantity of the plurality of error correction parity information stripes to delete based on sizes of each region in the first and second sets of regions. The controller deletes one or more of the plurality of error correction parity information stripes based on the computed quantity.

Raid region alignment for FDP compliant SSD

A computing device having: a local host system running a data application; and a storage product. The storage product has: a local storage device; a network interface to receive storage access messages from a remote host system; and a processing device configured to identify, from storage access messages, a first subset for processing by the data application, and a second subset bypassing the local host system. The first subset of the storage access messages includes first write messages configured by the remote host system to write first data into the storage product. The data application running in the local host system can generate second data based at least in part on the first data. The storage product can write the second data into the local storage device in response to the first write messages.

External data processing for network-ready storage products having computational storage processors

A memory device comprises a file system and a processing device to perform operations comprising receiving, from the file system, a first data access command comprising a payload, responsive to receiving the first data access command, determining, using the file system, a characteristic of the payload, wherein the characteristic of the payload indicates whether the first data access command is for data or for metadata, and sending a second data access command to a memory sub-system, wherein the second data access command includes an indication of a memory region of a memory device in which the memory sub-system is to store the payload, wherein the indication of the memory region is based on the characteristic of the payload.

Addressing zone namespace and non-zoned memory based on data characteristics

A storage product manufactured as a computer component and configured to have: a secure memory region to store cryptographic keys; a network interface; a local storage device having a storage capacity accessible via the network interface; and a host interface to be connected to a local host system. The local host system can control access, made via the network interface, to the storage capacity without receiving a portion of storage access messages received in the network interface. The storage product includes an access controller configured to determine whether a message, received in the network interface from the computer network or in the host interface from the local host system, has a valid verification code according to the cryptographic keys; and if not, the message can be rejected, deleted, discarded, or ignored without further processing.

Network-ready storage products with cryptography based access control

A victim management unit (MU) for performing a media management operation is identified. The victim MU stores valid data. A source cursor associated with the victim MU is identified from an ordered set of cursors. A target cursor following the source cursor in the ordered set of cursors referencing one or more available MUs is identified. In response to determining that the source cursor is a last cursor in the ordered set of cursors, the source cursor is utilized as the target cursor. The valid data is associated with the identified target cursor.

Temporal metric driven media management scheme

Aspects of the present disclosure configure a system component, such as memory sub-system controller, to dynamically generate Redundant Array of Independent Nodes (RAIN) parity information for zone-based memory allocations. The RAIN parity information is generated for a given zone or set of zones on the basis of whether the given zone or set of zones satisfy a zone completeness criterion. The zone completeness criterion can represent a specified size such that when a given zone reaches the specified size, the parity information for that zone is generated.

Dynamic rain for zoned storage systems

A computing device having a computer express link (CXL) connection between a memory sub-system and a host system and having storage access queues configured at least in part in the memory sub-system. The memory sub-system can attach, as a memory device, a portion of its fast random access memory over the connection to the host system. One or more storage access queues can be configured in the memory device. The host system can use a cache-coherent memory access protocol to communicate storage access messages over the connection to the random access memory of the memory sub-system. Optionally, the host system can have a memory with second storage access queues usable to access the storage services of the memory sub-system over the connection using a storage access protocol.

Data storage device with memory services for storage access queues

A memory sub-system can determine a block granularity for an input/output (I/O) data stream received from a host system. The memory sub-system can determine that the block granularity is different than a memory block granularity of a first memory region in a first namespace of the one or more memory devices, where the first memory region is to store the I/O data stream. The memory sub-system can accumulate blocks from the I/O data stream in a second memory region in a second namespace of the one or more memory devices. Responsive to a capacity of the accumulated blocks in the second memory region satisfying a threshold criterion, the memory sub-system can migrate the accumulated plurality of blocks from the second memory region to the first memory region.

Zone block staging component for a memory sub-system with zoned namespace

A security server storing a plurality of cryptographic keys to support device authentication, access control and proof of space plot farming. The cryptographic keys can include a first cryptographic key representative of an identity of a memory device, a second cryptographic key representative of a privilege to access a memory region in the memory device, and a third cryptographic key representative of a pool of proof of space plots. The security server can sign blocks in a blockchain created via plots in the pool, sign commands to access the memory region, and secure transfer of the second and/or third cryptographic key to the computer operated by an owner of the memory device.

Combined cryptographic key management services for access control and proof of space

A memory sub-system, such as a solid-state drive, configured to map a write stream to superblocks without the stream identifying a zone having a predetermined size in a namespace. The memory sub-system is configured to maintain, for the stream, a cursor configured to identify one of the plurality of superblocks as being reserved entirely for the stream; map, based on a superblock identified by the cursor, logical addresses of write commands in a contiguous segment of the stream to physical addresses in the superblock until the superblock is full; store data of write commands in the stream into based on mapping from logical addresses to physical addresses identified via the cursor; and allocate, for the cursor and in response to the superblock identified by the cursor being full, a free superblock available to continue mapping logical addresses to physical address.

Storage access communications and data placement for improved performance and reduced write amplification

A memory sub-system connectable to a microprocessor to provide network storage services. The memory sub-system has a random-access memory configured with: first queues for the microprocessor and a network interface; second queues for the microprocessor and a processing device; and third queues for the processing device and a storage device. The processing device is configured to: generate first control messages and first data messages from packets received by the network interface; place the first control messages into the first queues for the microprocessor; and place the first data messages into the third queues for the storage device. The microprocessor processes the first control messages to implement security and administrative functions and place second control messages in the second queues. The storage device is configured to retrieve the first data messages from the third queues and second control messages from the second queues for processing.

Message queue configuration to separate processing paths for control messages and data messages

A storage product having: a network interface operable on a computer network; a bus connector adapted to be connected to a computer bus; a storage device having a storage capacity accessible through network storage services provided over the network interface; and a processing device configured to at least generate storage access messages from incoming packets received by the network interface from the computer network. The storage product is operable in a standalone mode when no local host system is connected to the bus connector to control the storage product and operable in a slave mode when a local host system is connected to the bus connector to process a portion of the storage access messages.

Network storage products with options for external processing

A host system to query, during booting up of the host system, a superblock size in a connected memory sub-system. The host system can place write requests into separate streams and send the streams to the memory sub-system to store data of the write requests into separate sets of superblocks for the streams respectively. The host system can allocate, a plurality of log buffers for the streams respectively and record, into the log buffers, sequences of logical addresses as in the streams respectively. The host system can trim a stream, among the plurality of streams, by issuing commands to the memory sub-system to erase, according to the superblock size, an amount of data from a portion of a sequence of logical addresses recorded in a log buffer for the stream, causing the memory sub-system to free at least one superblock.

Random storage access and data erasure for improved performance and reduced write amplification

Host data associated with a first region of a memory device is identified. The host data is stored in a buffer, and the first region of the memory device is designated as open. The host data is padded to a predetermined size and written to the first region of the memory device. A context associated with the first region of the memory device is updated. The first region of the memory device is designated as closed.

Growing community of inventors

San Jose, CA, United States of America

Luca Bert