Abstract: One embodiment provides a computer system. The computer system comprises: a plurality of storage devices; and a first component functioning both as a network interface card and as an access switch, wherein the first component is configured to manage connections to the plurality of storage devices. A respective storage device comprises: an Ethernet port coupled to the first component; at least one microprocessor; a plurality of PCIe lanes; and a plurality of storage drives with non-volatile memory.

Abstract: One embodiment facilitates data placement in a storage device. During operation, the system receives chunks of data to be written to a non-volatile memory. The system encodes a first chunk based on a first error-correcting code (ECC) to obtain a first ECC-encoded codeword. The system encodes a first group of ECC-encoded codewords which include the first ECC-encoded codeword, based on an erasure code (EC) to obtain a first EC-encoded group, wherein a respective EC-encoded group includes EC parity bits. The system encodes the EC parity bits of the obtained first EC-encoded group based on a second error-correcting code (ECC) to obtain ECC-encoded EC parity bits. The system writes the first EC-encoded group and the ECC-encoded EC parity bits to the non-volatile memory.

Abstract: Disclosed are systems, methods, and apparatuses for providing a high-speed data path to storage devices. In one embodiment, a method is disclosed comprising receiving, by the processor, a data access command, the data access command specifying a location in memory to access data; issuing, by the processor, the data access command to the storage device via a first datapath, the first datapath comprising a non-block datapath; and accessing, by the processor, the non-volatile storage component through the first datapath and the memory, wherein the non-volatile storage component of the storage device is mapped to memory accessible by the processor.

Abstract: One embodiment described herein provides a system for managing metadata for a shingled magnetic recording (SMR) drive. During operation, the system stores a metadata file in a memory of a host of the SMR drive; subsequent to the SMR drive performing a write operation, the system generates a metadata update, and sends the generated metadata update to a buffer associated with the SMR drive and the memory of the host. In response to a compaction condition being met, the system launches, in the memory of the host, a metadata compaction operation to generate a compacted metadata file based on the previously stored metadata file and the metadata update, and sends the compacted metadata file to the SMR drive.

Abstract: One embodiment facilitates data placement in a storage device. During operation, the system receives a request indicating first data to be written to a non-volatile memory which includes a plurality of dies, wherein a plurality of error correction code (ECC) codec modules reside on the non-volatile memory. The system receives, by a first codec module residing on a first die, the first data. The system encodes, by the first codec module operating on the first die, the first data based on an error correction code (ECC) to obtain first ECC-encoded data which includes a first set of ECC parity bits. The system writes the first ECC-encoded data to the first die.

Abstract: The present inventions are related to systems and methods for accessing data from a flash memory, and more particularly to systems and methods for inter-cell interference handling in a flash memory. The systems and methods may include a soft information correction circuit that is operable to receive soft information corresponding to information accessed from a block of memory cells, and modify the soft information based upon a variance of the soft information and a median of the soft information to create corrected soft information, the corrected soft information being used to mitigate inter-cell interference in the block of memory cells.

Abstract: One embodiment facilitates a shared memory. During operation, the system receives, by a memory expansion device, an I/O request via a first interface which is distinct from a memory bus, wherein the memory expansion device includes a first set of memory modules, and wherein the memory expansion device is attached to a computer system via the first interface. The system processes, by a controller of the memory expansion device, the I/O request. The system transmits, by the controller via a second interface, the I/O request to a selected memory module. The system executes, by the selected memory module, the I/O request, thereby allowing the computer system to expand memory capacity beyond memory slots available on the memory bus.

Abstract: Anti-IL-12/IL-23p40 antibodies, such as ustekinumab, are used in methods and compositions for safe and effective treatment of psoriasis, particularly moderate to severe chronic plaque psoriasis, in pediatric patients. The methods and compositions address a clear unmet medical need in this patient population.

Abstract: Embodiments described herein provide a storage management system. During operation, the system receives information indicating sets of pending load of a plurality of storage devices from one or more storage nodes of a distributed storage system. The set of pending load of a respective storage device includes a set of load from host operations and a set of load from background operations on the storage device. The system can receive a request for a target resource associated with a disk operation from a client node of the distributed storage system. The system then selects, from the plurality of storage devices, a storage device with the smallest set of pending load based on the sets of pending load as the target resource and sends the target resource to the client node.

Abstract: One embodiment facilitates error recovery. During operation, the system receives an input/output request indicating data associated with a first logical block address. The system detects, in a mapping table, an error associated with the first logical block address, wherein the mapping table maps logical block addresses to physical block addresses. The system identifies a dedicated block which stores log entries with logical block addresses corresponding to sequentially programmed physical blocks. The system performs a search in the dedicated block to obtain a most recent valid log entry for the first logical block address. The system obtains a first physical block address corresponding to the first logical block address based on the sequentially programmed physical blocks or the dedicated block. The system executes the I/O request by accessing the first physical block address.

Abstract: The present disclosure provides methods, systems, and non-transitory computer readable media for operating a data storage system.

Abstract: One embodiment provides a memory module for a computer system. The memory module can include a physical enclosure encompassing at least one multi-chip packaging (MCP) module and a memory interface for coupling the MCP module to a central processing unit (CPU) of the computer system. The MCP module can include a first memory chip, an extended-memory chip, and a memory controller for controlling access to the extended-memory chip.

Abstract: The present disclosure provides a method for predicting a fluid type, comprising sensing, by a first sensor, mass flow data of a fluid in an engine, wherein the first sensor operates based on a first fluid property; sensing, by a second sensor, mass flow data of the fluid, wherein the second sensor operates based on a second fluid property; and detecting, by a logic circuit of a controller, a percent difference in the mass flow data provided by the first and second sensors, the percent difference indicating that the fluid is comprised of at least a first fluid type.

Abstract: A receiver optical sub-assembly, a combo bi-directional optical sub-assembly, a combo optical module, an optical line terminal, and a passive optical network system, where the receiver optical sub-assembly includes a first transistor-outline can, where a light incident hole is disposed on the first transistor-outline can, and where a first demultiplexer, a first optical receiver, a second optical receiver, and an optical lens combination are packaged in the first transistor-outline can.

Abstract: The present disclosure provides methods, systems, and non-transitory computer readable media for optimizing performance of a data storage system. The methods include receiving an I/O request to write a payload of data; selecting one or more secondary storage units from a plurality of secondary storage units coupled to the data storage system, wherein the selection of the one or more secondary storage units is based on an assessment of one or more effects on the garbage collection activity of the plurality of secondary storage units predicted to result from storing the payload of data on the plurality of secondary storage units; and storing the payload of data on the one or more selected secondary storage units.

Abstract: One embodiment facilitates global data placement in a storage device. The system receives a request to write first data. The system selects one of a plurality of physical media of the storage device to which to directly write the first data, based on a frequency of access, a block size, and a latency requirement of the first data, wherein the plurality of physical media includes a fast cache medium, a solid state drive, and a hard disk drive. In response to determining that the frequency of access of the first data is greater than a predetermined threshold, or in response to determining that the block size associated with the first data is not greater than a predetermined size and determining that the first data is an update to existing data, the system selects the fast cache medium. The system writes the first data to the selected one physical medium.

Abstract: One embodiment facilitates data placement. During operation, the system monitors a condition of a plurality of blocks of a non-volatile memory. The system determines that a condition of a first block falls below a first predetermined threshold, wherein the first block has a first capacity. The system formats the first block to obtain a second block which has a second capacity, wherein the second capacity is less than the first capacity.

Abstract: The present disclosure provides methods, systems, and non-transitory computer readable media for efficiently storing data. The methods include segmenting a parcel of data into one or more data chunks according to a physical block size of the secondary storage unit, wherein the one or more data chunks include a partial data chunk and zero or more full data chunks; sending each full data chunk of the zero or more full data chunks to the secondary storage unit to be written to a selected physical block of the secondary storage unit; collecting, in a collection buffer, the current partial data chunk and at least another partial data chunk; and sending a combination of the current partial data chunk and a subset of the plurality of other partial data chunks to the secondary storage unit to be written to a selected physical block of the secondary storage unit, wherein said combination fills substantially all of a physical-block-sized data chunk.

Abstract: Embodiments described herein provide a system for facilitating performance enhancement of a storage device. During operation, the system obtains a write request for storing a data page in the storage device. The system then stores the page in a non-volatile accumulation buffer integrated with the storage device and determines whether the accumulation buffer has accumulated at least one block of data. The block of data can indicate a unit of an erasure operation on the storage device. If the accumulation buffer has accumulated the one block of data, the system transfers the block of data to a first block in the storage device from the accumulation buffer.

Abstract: One embodiment provides a system and method for storing data. During operation, the system receives a to-be-written data chunk, sends the to-be-written data chunk to a first and second storage devices. The system performs first and second error-correction-code (ECC) encoding operations on the to-be-written data chunk prior to writing the to-be-written data chunk to the first and second storage media associated with the first and second storage devices, respectively. The first storage medium has a first access granularity and a first raw-error-rate (RER). The second storage medium has a second access granularity and a second RER. The first access granularity is smaller than the second access granularity, the first RER is greater than the second RER, and the second ECC encoding operation has a stronger error-correction capability than the first ECC encoding operation.