Apparatus and method for storing data in nonvolatile cache memory considering update ratio

Abstract

An apparatus and method for storing data in a nonvolatile cache memory considering an update ratio are provided. The apparatus includes a nonvolatile mass storage unit, a nonvolatile cache unit, and a memory controller for controlling the nonvolatile mass storage unit and the nonvolatile cache unit, and selectively storing the data in the nonvolatile mass storage unit or the nonvolatile cache unit based on the update ratio of the data. The method includes receiving a request for storage of data; selectively storing the data in a nonvolatile mass storage unit or a nonvolatile cache unit depending on an update ratio of the data; wherein the data is stored in the nonvolatile cache unit if an update ratio is greater than a threshold value.

Dependencies are inferred from the claim text.