Patents by Inventor Jeffery Lawrence Shellhamer

Jeffery Lawrence Shellhamer 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).

  • Apparatus and method for identifying disk drives with unreported data corruption
    Patent number: 7788541
    Abstract: A RAID controller uses a method to identify a storage device of a redundant array of storage devices that is returning corrupt data to the RAID controller. The method includes reading data from a location of each storage device in the redundant array a first time, and detecting that at least one storage device returned corrupt data. In response to detecting corrupt data, steps are performed for each storage device in the redundant array. The steps include reading data from the location of the storage device a second time without writing to the location in between the first and second reads, comparing the data read the first and second times, and identifying the storage device as a failing storage device if the compared data has a miscompare. Finally, the method includes updating the location of each storage device to a new location and repeating the steps for the new location.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: August 31, 2010
    Assignee: Dot Hill Systems Corporation
    Inventor: Jeffery Lawrence Shellhamer
  • APPARATUS AND METHOD FOR IDENTIFYING DISK DRIVES WITH UNREPORTED DATA CORRUPTION
    Publication number: 20090259882
    Abstract: A RAID controller uses a method to identify a storage device of a redundant array of storage devices that is returning corrupt data to the RAID controller. The method includes reading data from a location of each storage device in the redundant array a first time, and detecting that at least one storage device returned corrupt data. In response to detecting corrupt data, steps are performed for each storage device in the redundant array. The steps include reading data from the location of the storage device a second time without writing to the location in between the first and second reads, comparing the data read the first and second times, and identifying the storage device as a failing storage device if the compared data has a miscompare. Finally, the method includes updating the location of each storage device to a new location and repeating the steps for the new location.
    Type: Application
    Filed: July 31, 2008
    Publication date: October 15, 2009
    Applicant: DOT HILL SYSTEMS CORPORATION
    Inventor: Jeffery Lawrence Shellhamer