| 摘要 |
A read cache and a write cache are made up of two kinds of nonvolatile memories whose characteristics are different. For example, nonvolatile memory whose write endurance is high is assigned to the write cache, nonvolatile memory whose write endurance is low is assigned to the read cache, and the management tables of data in these caches are stored in the nonvolatile memory whose write endurance is high. Alternatively, nonvolatile memory that has a fast write speed but has a slow read speed is adopted for the write cache and nonvolatile memory that has a fast read speed but has a slow write speed is adopted for the read cache. |
