Patents by Inventor Thomas Pontos

Thomas Pontos 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).

  • Method for detecting problematic disk drives and disk channels in a RAID memory system based on command processing latency
    Patent number: 7917810
    Abstract: In order to detect problematic drives in random arrays of independent disks, the system measures the latency of executing command sets which are broadcast to all disks in the data storage system and the results are compared to identify which disks take substantially longer to complete the requests. Disks that take longer to complete requests are likely to be problematic and are candidates for further examination and replacement. The disks in each tier group are compared to determine if any disk in that group exhibits problems. Also, counters for each tier group are compared to determine if the problem is with the disk or with the channel of the tier group. The latency of each disk in the tier group is saved in a table to provide a histogram of the latency of the disks in the tier group. Histograms of the disks in a single tier group are compared to determine if a specific disk is problematic.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: March 29, 2011
    Assignee: Datadirect Networks, Inc.
    Inventors: Michael Piszczek, J. Gordon Manning, Thomas Pontos
  • Method for detecting problematic disk drives and disk channels in a RAID memory system based on command processing latency
    Publication number: 20090106602
    Abstract: In order to detect problematic drives in random arrays of independent disks, the system measures the latency of executing command sets which are broadcast to all disks in the data storage system and the results are compared to identify which disks take substantially longer to complete the requests. Disks that take longer to complete requests are likely to be problematic and are candidates for further examination and replacement. The disks in each tier group are compared to determine if any disk in that group exhibits problems. Also, counters for each tier group are compared to determine if the problem is with the disk or with the channel of the tier group. The latency of each disk in the tier group is saved in a table to provide a histogram of the latency of the disks in the tier group. Histograms of the disks in a single tier group are compared to determine if a specific disk is problematic.
    Type: Application
    Filed: October 17, 2007
    Publication date: April 23, 2009
    Inventors: Michael Piszczek, J. Gordon Manning, Thomas Pontos