Memory management device and method

A memory system comprising:

• a first nonvolatile memory region, a second nonvolatile memory region, and a third nonvolatile memory region;
• a write memory selector configured to select one of the first nonvolatile memory region, the second nonvolatile memory region, and the third nonvolatile memory region for a writing operation based upon specific information respectively specified for each unit of data to be written in the writing operation including static data information and dynamic data information, wherein at least one category of the specific information has both static and dynamic values;
• a compressor configured to generate compressed write-data;
• a processor configured to update the specific information after the writing operation is conducted;
• and
• a write controller configured to write, based on that the first nonvolatile memory region is selected for writing data, uncompressed write-data to the first nonvolatile memory region, and, based on that the second nonvolatile memory region is selected for writing data, the compressed write-data to the second nonvolatile memory region, and, based on that the third nonvolatile memory region is selected for writing data, one of the compressed write-data and the uncompressed write-data to the third nonvolatile memory region,
• wherein the specific information includes a plurality of categories and each of the categories includes both static and dynamic values.