How does ABBYY Recognition Server behave on system faults?

As Recognition Server is designed for unattended operation, it has a number of fault tolerance features that ensure robustness of the system:

  • The Server Manager and Processing Stations work as Windows services, and can start automatically at Windows startup. For example, in the case of a temporary power loss, the above mentioned components will get up and running automatically after the PC is rebooted;
  • The Server Manager periodically checks connection with the Processing Stations to make sure that they are running and are available. If a Processing Station is temporarily down for some reason, the Server Manager will re-establish connection after it is back to work. No administrator’s involvement is required to re-connect a Processing Station.

Recognition Server processes documents in a safe way, so that no data is lost in the case of a system failure:

  • All image files from the input source are imported into the Server Manager temporary folder and safely stored there during the whole conversion process. If the PC on which the Server Manger is installed experiences a failure, the files that were being processed will not be lost, they will be preserved in the temporary folder and stay in the queue. The processing of the files will continue after the PC is back to work;
  • The Processing Stations and Verification Stations receive copies of images from the Server Manger. This ensures that no files are lost if an error occurs during the recognition or verification process. If a Processing Station or Verification Station experiences a failure while processing an image, the Server Manger will automatically route a copy of the image to another available station. If no stations are available at the moment, the image will remain in the queue and wait for the first available station.


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