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Robert M Kubo

from San Jose, CA
Age ~65

Robert Kubo Phones & Addresses

  • 1576 Marietta Dr, San Jose, CA 95118 (408) 265-9621
  • 10200 Kenilworth Way, San Jose, CA 95127 (408) 259-2134
  • 1072 Normington Way, San Jose, CA 95136
  • 415 Golf Rd, Arlington Heights, IL 60005
  • Hoffman Estates, IL
  • Santa Clara, CA

Resumes

Resumes

Robert Kubo Photo 1

Sales Manager

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Location:
1576 Marietta Dr, San Jose, CA 95118
Industry:
Electrical/Electronic Manufacturing
Work:
Hosiden America Corp.
Sales Manager
Education:
San Jose State University
Interests:
Outdoors
Sports
Kids
Boating
Languages:
English
Robert Kubo Photo 2

Robert Kubo

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Publications

Us Patents

Detection And Correction Of Dropped Write Errors In A Data Storage System

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US Patent:
7793167, Sep 7, 2010
Filed:
Aug 23, 2007
Appl. No.:
11/843791
Inventors:
James L. Hafner - San Jose CA, US
Carl E. Jones - Tucson AZ, US
David R. Kahler - Tucson AZ, US
Robert A. Kubo - Tucson AZ, US
David F. Mannenbach - Tucson AZ, US
Karl A. Nielsen - Tucson AZ, US
James A. O'Conner - Ulster Park NY, US
Krishnakumar R. Surugucchi - Fremont CA, US
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
G06F 11/00
US Classification:
714 54, 714 42, 714805, 370248
Abstract:
Methods are provided for detecting and correcting dropped writes in a storage system. Data and a checksum are written to a storage device, such as a RAID array. The state of the data is classified as being in a “new data, unconfirmed” state. The state of written data is periodically checked, such as with a timer. If the data is in the “new data, unconfirmed” state, it is checked for a dropped write. If a dropped write has occurred, the state of the data is changed to a “single dropped write confirmed” state and the dropped write error is preferably corrected. If no dropped write is detected, the state is changed to a “confirmed good” state. If the data was updated through a read-modified-write prior to being checked for a dropped write event, its state is changed to an “unquantifiable” state.

Detection And Correction Of Dropped Write Errors In A Data Storage System

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US Patent:
7793168, Sep 7, 2010
Filed:
Aug 23, 2007
Appl. No.:
11/843804
Inventors:
James L. Hafner - San Jose CA, US
Carl E. Jones - Tucson AZ, US
David R. Kahler - Tucson AZ, US
Robert A. Kubo - Tucson AZ, US
David F. Mannenbach - Tucson AZ, US
Karl A. Nielsen - Tucson AZ, US
James A. O'Conner - Ulster Park NY, US
Krishnakumar S. Rao - Fremont CA, US
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
G06F 11/00
US Classification:
714 54, 714 42, 714805, 370248
Abstract:
Method, system and computer program product are provided for detecting and correcting dropped writes in a storage system. Data and a checksum are written to a storage device, such as a RAID array. The state of the data is classified as being in a “new data, unconfirmed” state. The state of written data is periodically checked, such as with a timer. If the data is in the “new data, unconfirmed” state, it is checked for a dropped write. If a dropped write has occurred, the state of the data is changed to a “single dropped write confirmed” state and the dropped write error is preferably corrected. If no dropped write is detected, the state is changed to a “confirmed good” state. If the data was updated through a read-modified-write prior to being checked for a dropped write event, its state is changed to an “unquantifiable” state.

Detection And Correction Of Dropped Write Errors In A Data Storage System

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US Patent:
7890815, Feb 15, 2011
Filed:
Jun 10, 2010
Appl. No.:
12/813491
Inventors:
James L. Hafner - San Jose CA, US
Carl E. Jones - Tucson AZ, US
David R. Kahler - Tucson AZ, US
Robert A. Kubo - Tucson AZ, US
David F. Mannenbach - Tucson AZ, US
Karl A. Nielsen - Tucson AZ, US
James A. O'Conner - Ulster Park NY, US
Krishnakumar S. Rao - Fremont CA, US
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
G06F 11/00
US Classification:
714 54, 714 42, 714805, 370248
Abstract:
A RAID system is provided for detecting and correcting dropped writes in a storage system. Data and a checksum are written to a storage device, such as a RAID array. The state of the data is classified as being in a “new data, unconfirmed” state. The state of written data is periodically checked, such as with a timer. If the data is in the “new data, unconfirmed” state, it is checked for a dropped write. If a dropped write has occurred, the state of the data is changed to a “single dropped write confirmed” state and the dropped write error is preferably corrected. If no dropped write is detected, the state is changed to a “confirmed good” state. If the data was updated through a read-modified-write prior to being checked for a dropped write event, its state is changed to an “unquantifiable” state.

Error Checking Addressable Blocks In Storage

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US Patent:
8370715, Feb 5, 2013
Filed:
Apr 12, 2007
Appl. No.:
11/734786
Inventors:
James Lee Hafner - San Jose CA, US
David Ray Kahler - Tucson AZ, US
Robert Akira Kubo - Tucson AZ, US
David Frank Mannenbach - Tucson AZ, US
Karl Allen Nielsen - Tucson AZ, US
James A. O'Connor - Ulster Park NY, US
Krishnakumar Rao Surugucchi - Fremont CA, US
Richard B. Stelmach - Tucson AZ, US
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
G11C 29/00
US Classification:
714769, 714770
Abstract:
Provided are a method, system, and article of manufacture for error checking addressable blocks in storage. Addressable blocks of data are stored in a storage in stripes, wherein each stripe includes a plurality of data blocks for one of the addressable blocks and at least one checksum block including checksum data derived from the data blocks for the addressable block. A write request is received to modify data in one of the addressable blocks. The write and updating the checksum are performed in the stripe having the modified addressable block. An indication is made to perform an error checking operation on the stripe for the modified addressable block in response to the write request, wherein the error checking operation reads the data blocks and the checksum in the stripe to determine if the checksum data is accurate. An error handling operation is initiated in response to determining that the checksum data is not accurate.
Robert M Kubo from San Jose, CA, age ~65 Get Report