Patent ID: 8230186
Filing Date: 2012-07-24
Classification: G11B

Abstract:
1. A hybrid recording device having a non-volatile semiconductor memory and a recording magnetic disk, comprising: a computer controller to execute wherein the mapping maps the first recording area and the second recording area while allocating an attribute representing one or more of a redundancy area and/or a speed-up area to the first recording area and/or the second recording area, and in a case where a writing command is received as an access instruction to the first recording area, the computer controller executes writing common data into the first recording area and the second recording area when the attribute representing the redundancy area is allocated to the first recording area, and the computer controller executes writing latest data into the second recording area and also writing the latest data of the second recording area into the first recording area under only a predetermined condition when the attribute representing the speed-up area is allocated to the first recording area.