| 摘要 |
According to the present invention, it is possible to identify such data that need not undergo the subsequent diagnosis-and-recovery operations based on results of self-diagnosis performed up to the current performing of diagnosis, each time diagnosis is performed as many as the predetermined number of times or each time a predetermined lapse of time passes or a user makes an instruction to that effect. Also, each time diagnosis is performed as many as the predetermined umber of times or each time a predetermined lapse of time passes or each time the user makes an instruction to that effect, based on results of self-diagnosis performed up to the current performing of diagnosis, backup data of interest is classified into frequently-used backup data and not-immediately-required backup data automatically, which are then backed up in mutually different storage media. Also, the frequently-used backup data is stored in a storage medium having a relatively high read-out speed and the not-immediately-required backup data, in a storage medium having a relatively low read-out speed. Also, the not-immediately-required data is compressed before being backed up in the storage medium. |
