Patent ID: 7752461
Filing Date: 2010-07-06
Classification: G06F,G11B

Abstract:
1. A storage apparatus to input/output classified data according to a predetermined procedure, and storing said classified data, comprising: an interface for data input/output with an external source, a data storage unit storing said classified data, a plurality of log storage units storing history information associated with input/output of said classified data, a control unit controlling input/output of said classified data, each of the plurality of history information stored in said plurality of log storage units including identification information to identify classified data, status information recording a progress status of an input/output process classified data, and input/output identification information identifying input/output status of classified data, wherein said control unit selects, when there is no log storage unit storing history information including said received identification information in said plurality of log storage units, one of said plurality of log storage units that stores history information indicating that input of another classified data that is not the subject of input/output is completed according to said status information; further comprising a log administration storage unit to administer a usage sequence of each of said plurality of log storage units, wherein said control unit selects, when there is no log storage unit storing history information including said received identification information in said plurality of log storage units, a log storage unit storing history information of the lowest usage probability according to a predetermined procedure, and stores history information according to the progress of the procedure for classified data input/output into said selected log storage unit.