Patent ID: 9396755
Filing Date: 2016-07-19
CPC Classification: G11B

Claim Text:
1. A data storage device, comprising: a magnetic storage medium; a non-volatile solid-state device; and a controller configured to: detect a temperature of the data storage device that is greater than a predetermined temperature; determine a maximum allowable number and an actual number of dirty memory blocks in the non-volatile solid-state device, wherein each dirty memory block in the non-volatile solid-state device stores data that are not also stored on the magnetic storage medium; execute a write command by writing data associated with the write command to one of the non-volatile solid-state device and the magnetic storage medium, so that the actual number of dirty memory blocks in the non-volatile solid-state device is, after the writing, less than or equal to the maximum allowable number of memory blocks in the non-volatile solid-state device; and if the actual number of dirty memory blocks in the non-volatile solid-state device is greater than the maximum allowable number of dirty memory blocks in the non-volatile solid-state device, copy a number of dirty memory blocks in the non-volatile solid-state device to the magnetic storage medium to decrease the actual number of dirty memory blocks in the non-volatile solid-state device.