Risk protection storage device and risk protection method thereof

A storage device comprising:

• at least one nonvolatile memory device;
• and
• a memory controller configured to control the nonvolatile memory device,
• the memory controller including,
• at least one processor configured to control an operation of the storage device, and configured to perform at least one of a trim operation according a trim command and a garbage collection operation;
• a buffer memory configured to store data received from an external device to program the received data in at least one nonvolatile memory device in a write operation or store data read from the nonvolatile memory device to output the read data to the external device in a read operation;
• an error correction circuit configured to generate at least one error correction code corresponding to data stored in the buffer memory in the write operation or correct an error of the data read using at least error correction code in the read operation;
• and
• a risk protection controller configured to perform a risk protection operation that disables at least one of the garbage collection operation or the trim operation according to a risk protection signal internally generated or a risk protection command input from the external device.