Kioxia Corporation

Toshiba Memory Corporation

Ashwini Puttaswamy

Amit Jain

Gyan Prakash

A method performed by a controller of a solid state drive (SSD) comprising receiving from a host a write request to store write data in a nonvolatile semiconductor storage device of the SSD. The method also comprises identifying a first codeword and a second codeword stored in the nonvolatile storage device, the first codeword and the second codeword configured to store write data corresponding to the write request. Responsive to the write request, the method comprises writing a first portion of the write data to the first codeword and writing a second portion of the write data to the second codeword, and sending a message to the host once the write data has been written to the nonvolatile semiconductor storage device. The first and second codewords are adjacently stored, and the write data has a length that is greater than the length of the first and second codewords.

Payload distribution in solid state drives

A method performed by a controller of a solid state drive comprising receiving from a host a read request for read data stored in nonvolatile semiconductor storage devices of the solid state drive. The method also comprises identifying a first codeword and a second codeword, the first codeword and the second codeword comprising the read data corresponding to the read request. Responsive to the read request, the method comprises reading a first portion of the read data contained in the first codeword and reading a second portion of the read data contained in the second codeword, assembling the first portion and the second portion as assembled read data, and transferring the assembled read data to the host responsive to the read request. The first and second codewords are adjacently stored, and the assembled read data has a length that is greater than the length of the first and second codewords.

Payload spill boundary table assisted read in solid state drives

Systems and methods for two-layered or a two-phase deterministic inter-process communication (IPC) scheduling for input output deterministic (IOD) sets also referred to as non-volatile memory (NVM) sets in a solid state drive (SSD) system are provided. In various embodiments, an SSD controller includes an IPC scheduler comprising a first layer NVM set scheduler and a second layer fair share scheduler, configured to receive information messages for NVM sets, operable to prioritize the information messages in IPC queues, and generate an IPC pipeline to be processed for I/O operations.

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Cupertino, CA, United States of America

Ashwini Puttaswamy