Patents Represented by Attorney Gary D. Birch, Stewart, Kolasch & Birch Yacura
  • Patent number: 6154791
    Abstract: A communication system for an array of DASD includes a plurality of loop resiliency circuits and a plurality of selection circuits. The DASD array includes a plurality of DASD slots. Each DASD slot may receive a DASD, and each DASD receives power from a regulator. The loop resiliency circuits form at least a first communication path. Each loop resiliency circuit is associated with one of the DASD slots and selectively includes the associated DASD slot in the first communication path based on a selection signal. The plurality of selection circuits are also associated with one of the DASD slots; and therefore, are also associated with one of the plurality of loop resiliency circuits. Each selection circuit is connected to the associated DASD slot and receives output from the regulator in the associated DASD slot. Based on the regulator output, or a lack thereof, the selection circuit generates a selection signal for the associated loop resiliency circuit.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: November 28, 2000
    Assignee: International Business Machines Corporation
    Inventors: Christopher John Kimble, Thomas J. Osten, Paul Gary Reuland, Daniel Guy Young