Data management method and storage device performing the same

A data management method executed by a storage device that includes a nonvolatile memory device including a plurality of memory blocks, the method comprising:

• receiving a copy command from an external host such that a data copy operation is performed on a first storage region;
• and
• internally copying valid data stored in the first storage region into a second storage region based on the copy command, wherein
• logical addresses and physical addresses of the valid data are changed together as the data copy operation for the valid data is performed.

A storage device comprising:

• a nonvolatile memory device including a plurality of memory blocks;
• and
• a storage controller that controls the nonvolatile memory device, wherein:
• the storage controller receives a TRIM-after-COPY command from an external host such that a data compaction operation is performed on a first storage region,
• valid data stored in the first storage region are internally copied into a second storage region based on the TRIM-after-COPY command, and
• the storage controller performs a TRIM operation based on the TRIM-after-COPY command to update a logical-to-physical address mapping table and a valid page bitmap.