Patent ID: 7711981

Claim:
An information processing apparatus having a data storage unit to store a data, comprising: a connector unit to which a backup storage apparatus provided separately from the information processing apparatus is connected; an accumulation unit that accumulates a data change log specifying a changed data in the data storage unit; a processor unit that backs up the data stored in the data storage unit into the backup storage apparatus, wherein the processor unit backs up the data stored in the data storage unit into the backup storage apparatus and then generates the data change log to accumulate into the accumulation unit; in a state where the backup storage apparatus is connected to the connector unit, compares the data stored in the data storage unit and a data stored in the backup storage apparatus and then detects a data differing portion of the data stored in the data storage unit, which is different from the data stored in the backup storage apparatus; determines whether or not the data differing portion matches the data change log accumulated in the accumulation unit; and if the data differing portion matches the data change log, backs up the data stored in the data storage unit into the backup storage apparatus, and if the data differing portion is a mismatch data differing portion that does not match the data change log, discriminates the mismatch data differing portion as an abnormal data.