Patents Assigned to International Buiness Machines Coporation
  • Data coherence system
    Patent number: 7386676
    Abstract: A data coherence system includes a generation number written to a data track of a logical sub-system. The generation number is compared to a corresponding generation number in a processing device when it is initialized. If the two generations numbers are the same, the generation numbers are incremented and saved. If not, cache associated with the logical sub-system residing within the processing device is erased and the generation numbers are reset.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: June 10, 2008
    Assignee: International Buiness Machines Coporation
    Inventors: Said A. Ahmad, Michael T. Benhase, William D. Williams