Patent ID: 7069305

Claim:
A computer system including a first computer node and a second computer node connected to said first computer node, comprising: a first storage area for storing data records; a first processor provided with said first computer node for storing the data records to said first storage area asynchronously with said second computer node with a free time interval; a transmitter provided with said first computer node for sending the data records stored in said first storage area; a second storage area for storing the data records copied from said first storage area; a receiver provided with said second computer node and connected to said transmitter via a network for requesting said transmitter to send a record group of the data records stored in said first storage area via said network and designated by a request command sent by said receiver, receiving the record group of the data records from said transmitter via said network and storing the record group of the data records to said second storage area; and a second processor for designating the record group of the data records, to be read from said first storage area using address information of said first storage area in a free time interval asynchronously with storing executed by said first processor and for letting said receiver send the request command to said transmitter, wherein said transmitter reads the record group of the data records designated by the request command sent from said receiver and sends the record group of the data records to said receiver in response to the request command via said network, and wherein said first processor stores each record group of the data records into said first storage area with an identifier number indicating a sequence of storing of the each record group of the data records, said transmitter sends the record group of the data records to said receiver in reverse order of the sequence of storing, and said second processor refers to the record group of the data records in said first storage area copied to said second storage area based on the reverse order in order to determine whether the relevant record group of the data records are correct or not depending on said identifier number.