Resources Contact Us Home
Detecting and recovering from silent data errors in application cloning systems

Image Number 10 for United States Patent #8117496.

A method, system, and article for resolving a silent error is disclosed. A primary program copy runs on a primary host, and a secondary program copy runs on a secondary host. The primary and secondary copies communicate to maintain synchronized execution. A third copy of the data is stored on a storage device as a write operations log and maintained in memory on the primary host while the program is running. The primary copy is synchronized with the secondary copy by computing a first checksum of data on the primary host in response to a read operation local to the primary host, computing a second checksum of data on the secondary host in response to a read operation local to the secondary host, and periodically communicating the first checksum to the secondary host, and resolving any discrepancies between the first and second checksum of data reflecting a silent data error.

  Recently Added Patents
Novelty headband
Isolated nucleic acid molecule encoding an antibody that reduces GDF-8 activity
Case for camera
Adaptive block pre-fetching method and system
SRAM cells using shared gate electrode configuration
Isolated Australian coral reef fluorescent proteins and cell-based kinase or phosphatase platforms for cancer drug development
High purity diphenyl sulfone, preparation and use thereof for the preparation of a poly(aryletherketone)
  Randomly Featured Patents
Vacuum cleaner filter adapter ring
Creating and managing links to deduplication information
Vehicle for children
Stainless steel faceplates with labels
System and method for displaying text
Power transmission and clutch mechanism for a cassette tape deck
Disk changer
Polarizing devices and methods of making the same
Anti-theft and security system for computers
Methods for producing members of specific binding pairs