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

A method of operating a storage system comprising a host device and a storage device, the method comprising:

• transmitting, using the host device and to the storage device, a write command that comprises a directive value;
• receiving, using the storage device and in response to the write command, data corresponding to the write command;
• and
• storing, using the storage device and in response to an adaptive data placement feature being enabled, the data in one of a first area or a second area that corresponds to the directive value,
• wherein the storage device comprises a non-volatile memory device that comprises the first area and the second area, and
• wherein the first area comprises memory cells configured to store n-bits per cell, and the second area comprises memory cells configured to store m-bits per cell, wherein n is a positive integer, and m is a positive integer greater than n.

A storage system comprising:

• a storage device comprising a first area and a second area;
• and
• a host device configured to control the storage device,
• wherein the host device is configured to enable an adaptive data placement feature of the storage device and transmit a write command to the storage device, wherein the write command comprises a directive value that indicates type information indicative of a type of an area where data is to be stored,
• wherein the storage device is configured to, in response to the adaptive data placement feature being enabled and in response to the write command, store the data in one of the first area or the second area that corresponds to the directive value, and
• wherein the first area comprises memory cells configured to store n-bits per cell, and the second area comprises memory cells configured to store m-bits per cell, wherein n is a positive integer, and m is a positive integer greater than n.