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
Stacked structure and stacked method for three-dimensional chip
Fluid pressure responsive electric switch
Method, system and computer program product for managing funds in custodial deposit accounts
Apparatus and method for efficient transmission of acknowledgements
Security authentication method, apparatus, and system
Carrier sense multiple access (CSMA) protocols for power line communications (PLC)
Method for production of fermentable sugars from biomass
  Randomly Featured Patents
Container
Hanging plush toy
Optical communication multiplex device for vehicle and communication method using same
Key fob and attachment
Analgesic potentiation
Composite slab incorporating a sheet of marble or similar natural stone, for the formation of facings for building, interior decoration and the like
Method of forming shaped configuration at end of long element
Butterfly valve
Releasable double locking knife
Method of treating androgenic alopecia with 5-.alpha.reductase inhibitors