Storage device, operation method of storage device, and operation method of storage controller

An operation method of a storage device which includes a storage controller, a nonvolatile memory device, and a buffer memory, the method comprising:

• setting, by the nonvolatile memory device, first device information to a memory circuit of the nonvolatile memory device;
• obtaining, by the storage controller, the first device information from the nonvolatile memory device and storing the first device information in the buffer memory as second device information;
• when a device failure occurs in the nonvolatile memory device, performing, by the storage controller, a recovery operation on the first device information stored in the memory circuit based on the second device information stored in the buffer memory;
• and
• after the recovery operation of the first device information is completed, retrying, by the nonvolatile memory device, a previous failed operation based on the recovered first device information,
• wherein the first device information includes information about an operation parameter and an operation frequency of the nonvolatile memory device.

An operation method of a storage device which includes a storage controller, a nonvolatile memory device, and a buffer memory, the method comprising:

• setting, by the nonvolatile memory device, first device information to a memory circuit included in the nonvolatile memory device;
• obtaining, by the storage controller, the first device information from the nonvolatile memory device and storing the first device information in the buffer memory as second device information;
• and
• when an operation count of the nonvolatile memory device reaches a threshold value, performing, by the storage controller, a recovery operation on the first device information stored in the memory circuit based on the second device information stored in the buffer memory,
• the first device information includes information about an operation parameter and an operation frequency of the nonvolatile memory device.