Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Image processing system, image processing apparatus, control method for image processing apparatus, and storage medium
5-HT.sub.3 receptor modulators, methods of making, and use thereof
Forming agent for gate insulating film of thin film transistor
Digital photographing apparatus
Method for producing semiconductor substrate, semiconductor substrate, method for manufacturing electronic device, and reaction apparatus
Process for brominating unsaturated organic compounds with removal of quaternary ammonium or quaternary phosphonium monochlorides
Biodiesel data collection system
  Randomly Featured Patents
Fractal device for mixing and reactor applications
Controller for controlling an electromagnetic actuator
Recording medium, method for recording and reproducing data using the medium, and magneto-optical recording apparatus
Method of die casting an article having a cavity and hanger produced thereby
Childproof electrical wall outlet protective device
Camera insertion into a furnace
Combined cycle pulse detonation turbine engine
Symmetric current mode logic
Apparatus for controlling gear transmission and clutch of vehicles
High mount stop lamp with printed circuit board