Patents by Inventor Dana L. Simonson
Dana L. Simonson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11210406Abstract: Systems and methods for encrypting system level data structures are described. A storage system may include a storage drive and at least one controller for the storage drive. In some embodiments, the at least one controller may be configured to identify user data assigned to be stored on the storage drive, encrypt the user data, identify a system data structure generated in relation to the user data, and encrypt the system data structure. In some cases, the data structure may include at least one of metadata, system data, and data encapsulation relative to the user data. In some embodiments, the user data and the data structure may be encrypted with one or more encryption keys programmed on the storage drive.Type: GrantFiled: July 15, 2016Date of Patent: December 28, 2021Assignee: SEAGATE TECHNOLOGY LLCInventors: Robert W. Moss, Stacey Secatch, Kristofer C. Conklin, Dana L. Simonson
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Patent number: 10715509Abstract: Systems and methods for encryption key shredding to protect non-persistent data are described. In one embodiment, the storage system device may include a storage drive and a controller. In some embodiments, the controller may be configured to power on the storage drive, identify an encryption key on the storage drive created upon powering on the storage drive, and encrypt data in a cache of the storage drive using the encryption key. In some embodiments, the controller may be configured to power off the storage drive and delete the encryption key upon powering off the storage drive. In some cases, the storage drive may include at least one of a solid state drive and a hard disk drive. In some embodiments, the storage drive may include a hybrid storage drive that includes both a solid state drive and a hard disk drive.Type: GrantFiled: October 30, 2018Date of Patent: July 14, 2020Assignee: SEAGATE TECHNOLOGY LLCInventors: Stacey Secatch, Kristofer C. Conklin, Dana L. Simonson, Robert W. Moss
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Patent number: 10474582Abstract: NAND flash storage devices and methods are provided that use a non-NAND cache to store write data until a substantially complete storage unit is available. An exemplary solid state storage device comprises a NAND flash memory device; a non-NAND cache; and a controller configured to obtain write data from a remote host for storage in the NAND flash memory device; store the write data in the non-NAND cache; and transfer the write data from the non-NAND cache to the NAND flash memory device when a predefined storage criterion is satisfied. The predefined storage criterion comprises, for example, a storage unit of the write data stored in the non-NAND cache, where the storage unit comprises a block of data erased in a single garbage collection cycle. The predefined storage criterion is optionally established to reduce open block degradation in NAND flash memory devices.Type: GrantFiled: April 28, 2017Date of Patent: November 12, 2019Assignee: Seagate Technology LLCInventor: Dana L. Simonson
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Patent number: 10289305Abstract: Systems and methods for enhanced read recovery based on write time information are described. In one embodiment, the systems and methods include opening a block of flash memory cells for programming, tracking a block open time, and performing a read operation of a programmed page from the block based at least in part on the block open time. In some embodiments, the block includes a plurality of pages, each page including a plurality of flash memory cells. In some cases, the block open time includes an amount of time between the block opening for programming to a time the block closes for programming.Type: GrantFiled: May 4, 2018Date of Patent: May 14, 2019Assignee: SEAGATE TECHNOLOGY LLCInventors: Dana L. Simonson, Kristofer C. Conklin, Ryan J. Goss, Robert W. Moss, Stacey Secatch
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Publication number: 20190075090Abstract: Systems and methods for encryption key shredding to protect non-persistent data are described. In one embodiment, the storage system device may include a storage drive and a controller. In some embodiments, the controller may be configured to power on the storage drive, identify an encryption key on the storage drive created upon powering on the storage drive, and encrypt data in a cache of the storage drive using the encryption key. In some embodiments, the controller may be configured to power off the storage drive and delete the encryption key upon powering off the storage drive. In some cases, the storage drive may include at least one of a solid state drive and a hard disk drive. In some embodiments, the storage drive may include a hybrid storage drive that includes both a solid state drive and a hard disk drive.Type: ApplicationFiled: October 30, 2018Publication date: March 7, 2019Applicant: SEAGATE TECHNOLOGY LLCInventors: Stacey Secatch, Kristofer C. Conklin, Dana L. Simonson, Robert W. Moss
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Patent number: 10211976Abstract: Systems and methods for hash authenticated data are described. In one embodiment, the storage device includes a storage drive and/or a controller. In some embodiments, the controller is configured to identify data to be authenticated, compute a first hash of the data using a hash function, detect a trigger event associated with the storage drive, and authenticate, after the trigger event, the data based at least in part on the first hash of the data.Type: GrantFiled: July 15, 2016Date of Patent: February 19, 2019Assignee: SEAGATE TECHNOLOGY LLCInventors: Robert W. Moss, Stacey Secatch, Dana L. Simonson, Kristofer C. Conklin
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Patent number: 10142304Abstract: Systems and methods for encryption key shredding to protect non-persistent data are described. In one embodiment, the storage system device may include a storage drive and a controller. In some embodiments, the controller may be configured to power on the storage drive, identify an encryption key on the storage drive created upon powering on the storage drive, and encrypt data in a cache of the storage drive using the encryption key. In some embodiments, the controller may be configured to power off the storage drive and delete the encryption key upon powering off the storage drive. In some cases, the storage drive may include at least one of a solid state drive and a hard disk drive. In some embodiments, the storage drive may include a hybrid storage drive that includes both a solid state drive and a hard disk drive.Type: GrantFiled: August 23, 2016Date of Patent: November 27, 2018Assignee: SEAGATE TECHNOLOGY LLCInventors: Stacey Secatch, Kristofer C. Conklin, Dana L. Simonson, Robert W. Moss
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Publication number: 20180314434Abstract: NAND flash storage devices and methods are provided that use a non-NAND cache to store write data until a substantially complete storage unit is available. An exemplary solid state storage device comprises a NAND flash memory device; a non-NAND cache; and a controller configured to obtain write data from a remote host for storage in the NAND flash memory device; store the write data in the non-NAND cache; and transfer the write data from the non-NAND cache to the NAND flash memory device when a predefined storage criterion is satisfied. The predefined storage criterion comprises, for example, a storage unit of the write data stored in the non-NAND cache, where the storage unit comprises a block of data erased in a single garbage collection cycle. The predefined storage criterion is optionally established to reduce open block degradation in NAND flash memory devices.Type: ApplicationFiled: April 28, 2017Publication date: November 1, 2018Applicant: Seagate Technology LLCInventor: Dana L. Simonson
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Publication number: 20180253235Abstract: Systems and methods for enhanced read recovery based on write time information are described. In one embodiment, the systems and methods include opening a block of flash memory cells for programming, tracking a block open time, and performing a read operation of a programmed page from the block based at least in part on the block open time. In some embodiments, the block includes a plurality of pages, each page including a plurality of flash memory cells. In some cases, the block open time includes an amount of time between the block opening for programming to a time the block closes for programming.Type: ApplicationFiled: May 4, 2018Publication date: September 6, 2018Applicant: SEAGATE TECHNOLOGY LLCInventors: Dana L. Simonson, Kristofer C. Conklin, Ryan J. Goss, Robert W. Moss, Stacey Secatch
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Patent number: 9977597Abstract: Systems and methods for enhanced read recovery based on write time information are described. In one embodiment, the systems and methods include opening a block of flash memory cells for programming, tracking a block open time, and performing a read operation of a programmed page from the block based at least in part on the block open time. In some embodiments, the block includes a plurality of pages, each page including a plurality of flash memory cells. In some cases, the block open time includes an amount of time between the block opening for programming to a time the block closes for programming.Type: GrantFiled: May 10, 2016Date of Patent: May 22, 2018Assignee: SEAGATE TECHNOLOGY LLCInventors: Dana L. Simonson, Kristofer C. Conklin, Ryan J. Goss, Robert W. Moss, Stacey Secatch
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Publication number: 20180063102Abstract: Systems and methods for encryption key shredding to protect non-persistent data are described. In one embodiment, the storage system device may include a storage drive and a controller. In some embodiments, the controller may be configured to power on the storage drive, identify an encryption key on the storage drive created upon powering on the storage drive, and encrypt data in a cache of the storage drive using the encryption key. In some embodiments, the controller may be configured to power off the storage drive and delete the encryption key upon powering off the storage drive. In some cases, the storage drive may include at least one of a solid state drive and a hard disk drive. In some embodiments, the storage drive may include a hybrid storage drive that includes both a solid state drive and a hard disk drive.Type: ApplicationFiled: August 23, 2016Publication date: March 1, 2018Applicant: SEAGATE TECHNOLOGY LLCInventors: Stacey Secatch, Kristofer C. Conklin, Dana L. Simonson, Robert W. Moss
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Publication number: 20180019876Abstract: Systems and methods for hash authenticated data are described. In one embodiment, the storage device includes a storage drive and/or a controller. In some embodiments, the controller is configured to identify data to be authenticated, compute a first hash of the data using a hash function, detect a trigger event associated with the storage drive, and authenticate, after the trigger event, the data based at least in part on the first hash of the data.Type: ApplicationFiled: July 15, 2016Publication date: January 18, 2018Applicant: SEAGATE TECHNOLOGY LLCInventors: Robert W. Moss, Stacey Secatch, Dana L. Simonson, Kristofer C. Conklin
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Publication number: 20180018469Abstract: Systems and methods for encrypting system level data structures are described. In one embodiment, a storage system may include a storage drive and at least one controller for the storage drive. In some embodiments, the at least one controller may be configured to identify user data assigned to be stored on the storage drive, encrypt the user data, identify a system data structure generated in relation to the user data, and encrypt the system data structure. In some cases, the data structure may include at least one of metadata, system data, and data encapsulation relative to the user data. In some embodiments, the user data and the data structure may be encrypted with one or more encryption keys programmed on the storage drive.Type: ApplicationFiled: July 15, 2016Publication date: January 18, 2018Applicant: SEAGATE TECHNOLOGY LLCInventors: Robert W. Moss, Stacey Secatch, Kristofer C. Conklin, Dana L. Simonson
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Publication number: 20170329525Abstract: Systems and methods for enhanced read recovery based on write time information are described. In one embodiment, the systems and methods include opening a block of flash memory cells for programming, tracking a block open time, and performing a read operation of a programmed page from the block based at least in part on the block open time. In some embodiments, the block includes a plurality of pages, each page including a plurality of flash memory cells. In some cases, the block open time includes an amount of time between the block opening for programming to a time the block closes for programming.Type: ApplicationFiled: May 10, 2016Publication date: November 16, 2017Applicant: SEAGATE TECHNOLOGY LLCInventors: Dana L. Simonson, Kristofer C. Conklin, Ryan J. Goss, Robert W. Moss, Stacey Secatch