Patent ID: 7099903
Filing Date: 2006-08-29
Classification: G06F,Y10S

Abstract:
1. A backup processing method for performing backup of data used in an information processing device having storage means, the method comprising the steps of: storing in an update bitmap management table stored in the storage means updated bit information indicating that data has been updated, when the data has been updated; commanding the backup of data corresponding to updated bit information stored in the update bitmap management table when a number of the updated bit information stored in the update bitmap management table has reached a differential backup reference value for estimating differential backup processing time; and reading out the updated bit information stored in the update bitmap management table in the storage means upon receipt of the command for the backup, and obtaining the backup of the data corresponding to the updated bit information stored in the update bitmap management table, wherein when the number of the updated bit information in the update bitmap management table has reached the differential backup reference value within an update processing detection time for detecting update processing, the command for the backup is temporarily stopped, and after a number of an increment of updated bit information per predetermined time has become less than a reference value for detecting the update processing, the stopped command for the backup is executed.