Storage device and method of operating the same

A memory controller that controls a first memory device group and controls a second memory device group through a sub controller, the memory controller comprising:

• a map data manager configured to store a first mapping table corresponding to the first memory device group and a second mapping table corresponding to the second memory device group;
• and
• an operation controller configured to generate a command according to a request received from a host and provide the command to the first memory device group or the sub memory controller based on a logical address provided from the host,
• wherein the first mapping table and the second mapping table are configured by different mapping units.

A storage device comprising:

• one or more first memory devices each of which performs operations in units of pages;
• one or more second memory devices each of which performs operations in units of zones;
• a first controller configured to:
• control one of the first memory devices to perform an operation according to a first physical address indicating a page within the first memory devices by translating a first logical address to the first physical address;
• and
• generate a command with a second physical address indicating a zone within one of the second memory devices by translating a second logical address to the second physical address;
• a second controller configured to control, in response to the command, the second memory device to perform an operation according to the second physical address,
• wherein the zone is a greater unit than the page.