| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an information processor capable of writing dirty data onto an external storage even when abnormal termination due to a power failure or the like occurs, and to provide a cache control method. <P>SOLUTION: According to one embodiment of the present invention, an information processor accessible to a first external storage includes a host system, a second external storage, a volatile memory, first cache control means, termination processing means, and initialization means. The second external storage serves as a secondary cache for the first external storage. The volatile memory serves as a primary cache for the first external storage, and is supplied with power by battery at the time of a power failure. The first cache control means stores write data to be written onto the first external storage in a cache area in the volatile memory. When the information processor is terminated abnormally and then started up, the initialization means writes dirty data stored in the cache area in the volatile memory onto the first external storage. <P>COPYRIGHT: (C)2012,JPO&INPIT |
