Benjamin A Scott

US Patent:

20200004448, Jan 2, 2020

Filed:

Jun 28, 2018

Appl. No.:

16/021134

Inventors:

- Cupertino CA, US
Steven S. Williams - Longmont CO, US
David W. Claude - Loveland CO, US
Benjamin J. Scott - Longmont CO, US
Kyumsung Lee - Louisville CO, US
Jeff Rogers - Dunlap IL, US

International Classification:

G06F 3/06

Abstract:

A data storage system can arrange semiconductor memory into a plurality of die sets that each store a top-level map with each top-level map logging information about user-generated data stored in a die set in which the top-level map is stored. A journal can be stored in at least one die set of the plurality of die sets with each journal logging a change to user-generated data stored in the die set of the plurality of die sets in which the journal and top-level map are each located.

US Patent:

20200004456, Jan 2, 2020

Filed:

Jun 28, 2018

Appl. No.:

16/021782

Inventors:

- Cupertino CA, US
Stacey Secatch - Niwot CO, US
David W. Claude - Loveland CO, US
Kyumsung Lee - Louisville CO, US
Benjamin J. Scott - Longmont CO, US

International Classification:

G06F 3/06

Abstract:

A semiconductor data storage memory can receive data access commands into a queue in a first time sequence that correspond with the transfer of data between a host and portions of the memory. The memory may be divided into separate portions that each have a different owner and the access commands may be issued to each of the respective separate portions. The access commands can subsequently be executed in a different, second time sequence responsive to estimated completion times for each of the access commands based on measured completion times for previously serviced, similar commands to maintain a nominally consistent quality of service level for each of the respective owners.

US Patent:

20200004636, Jan 2, 2020

Filed:

Jun 29, 2018

Appl. No.:

16/023234

Inventors:

- Cupertino CA, US
Steven S. Williams - Longmont CO, US
David W. Claude - Loveland CO, US
Benjamin J. Scott - Longmont CO, US
Kyumsung Lee - Louisville CO, US
Jeff Rogers - Dunlap IL, US

International Classification:

G06F 11/14
G06F 1/30
G06F 12/02
G06F 3/06

Abstract:

A data storage system can connect a plurality of remote hosts to a plurality of die sets resident in a semiconductor memory. Execution of at least one data access command addressed by a remote host of the plurality of remote hosts can occur prior to a power interruption event being detected for at least one die set of the plurality of die sets. User-generated data associated with the at least one data access command may then be flushed to a predetermined location responsive to an available resource budget associated with the power interruption event.

US Patent:

20200004971, Jan 2, 2020

Filed:

Jun 28, 2018

Appl. No.:

16/021823

Inventors:

- Cupertino CA, US
Steven S. Williams - Longmont CO, US
David W. Claude - Loveland CO, US
Benjamin J. Scott - Longmont CO, US
Kyumsung Lee - Louisville CO, US
Stephen H. Perlmutter - Louisville CO, US

International Classification:

G06F 21/60
H04L 9/08
G06F 1/28
G06F 11/10
G06F 3/06

Abstract:

Apparatus and method for managing entropy in a cryptographic processing system, such as but not limited to a solid-state drive (SSD). In some embodiments, a processing device is operated to transfer data between a host device and a non-volatile memory (NVM). In response to the detection of a power down event associated with the processing device, entropy associated with the power down event is collected and stored in a memory. Upon a subsequent reinitialization of the processing device, the entropy is conditioned and used as an input to a cryptographic function to subsequently transfer data between the host device and the NVM. In some embodiments, the entropy is obtained from the state of a hardware timer that provides a monotonically increasing count for timing control. In other embodiments, the entropy is obtained from a RAID buffer used to store data to a die set of the NVM.

US Patent:

20190377633, Dec 12, 2019

Filed:

Dec 6, 2018

Appl. No.:

16/212242

Inventors:

- Cupertino CA, US
Steven S. Williams - Longmont CO, US
Benjamin J. Scott - Longmont CO, US
Andrew J. Louder - Longmont CO, US
Kyumsung Lee - Louisville CO, US
Robert W. Dixon - Longmont CO, US

International Classification:

G06F 11/10
H03M 13/29
G11C 29/52

Abstract:

Apparatus and method for storing data in a non-volatile memory (NVM), such as a flash memory in a solid-state drive (SSD). In some embodiments, a distributed storage space of the NVM is defined to extend across a plural number of regions of the NVM. A non-standard parity data set is provided having a plural number of data elements greater than or equal to the plural number of regions in the storage space. The data set is written by storing a first portion of the data elements and a first parity value to the plural number of regions and a remaining portion of the data elements and a second parity value to a subset of the plural number of regions. The regions can comprise semiconductor dies in a flash memory, and the distributed storage space can be a garbage collection unit formed using one erasure block from each flash die.