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AssigneeUnisys Corporation
InventorDonald Ralph Hart
Estimating the term…
A method for sensing and regulating the level of synchronization between a file of audit blocks generated in a primary host for transfer to a secondary host. The audit files in a primary host are divided into audit blocks which are each identified with an audit block serial number. The individual audit blocks are transmitted through a network from a primary host to a secondary host wherein a tracker mechanism monitors the difference between the number of received audit blocks and the number of generated audit blocks residing at the primary host waiting to be transferred. When the disparity between the audit blocks received and the generated audit blocks waiting to be transmitted reaches a certain critical level, the tracker mechanism will initiate an advance speed up program to expedite the transfer in order to bring the primary and secondary audit files into greater synchronism. Further, the acknowledgment level can be set to indicate the number of audit blocks received in the secondary host for information back to the primary host and the acknowledgment level can be utilized in order to preset a critical value which will indicate that the speed up transfer operation should be initiated.
In a network wherein a primary host is connected to a secondary host in order to set up a secondary host backup database which will maintain data file synchronism with a primary host database, a method for sensing the level of duplication between said primary and secondary databases comprising the steps of:
A method of regulating the synchronization level between audit blocks in a primary host, which are awaiting transfer to a secondary host, and audit blocks received in said secondary host, comprising the steps of:
In a system for expediting the transfer of audit files from a primary host to a secondary host, a method for sensing the state of synchronism between sectioned audit files in said primary host awaiting transfer and sectioned audit files positioned as audit blocks in said secondary host which are received from said primary host, said method comprising the steps of:
In a system utilizing an audit block write mode method for transfer of audit file data from a primary host to a secondary host, a method for sensing any delay in the transfer of audit block sections from said primary host to said secondary host comprising the steps of:
A method for detecting the condition of out-of-synchronization between sectioned audit files of a source host database and a remote host database, comprising the steps of:
A system for re-instituting the transfer of audit blocks after an interrupted or failed network transmission connection between a primary host and a secondary host, and where each audit file block has been assigned a special serial number, said system comprising:
Dependencies are inferred from the claim text.