Data storage apparatus guaranteeing program sequence and operating method thereof

An operating method of a data storage apparatus, the operating method comprising:

• temporarily storing, by a memory controller, write data and a mapping table in a buffer memory device in response to write commands including logical addresses that are externally received;
• storing, by the memory controller, logical addresses by mapping the logical addresses to physical addresses sequentially stored in the mapping table in a sequence in which the write commands are received;
• controlling, by the memory controller, a storage device to program the write data;
• generating, by the memory controller, first mapping information corresponding to a first write command and second mapping information corresponding to a second write command;
• invalidating, by the memory controller, the first mapping information according to a determination that a first program operation corresponding to the first write command fails and a second program operation succeeds;
• storing, by the memory controller, first map data including the first mapping information that has been invalidated and the second mapping information corresponding to the second write command in the storage device;
• loading, by the memory controller, the first map data onto the mapping table in response to a reprogram command generated with respect to the first write command;
• and
• updating, by the memory controller, the first mapping information by allocating a new physical address to a logical address included in the first write command.

A data storage apparatus comprising:

• a storage device including a plurality of memory blocks;
• a buffer memory device configured to temporarily store first write data and second write data;
• a buffer manager configured to manage the buffer memory device in a scatter-gather way;
• and
• a memory controller configured to
• control the storage device to program the first write data and the second write data that are sequentially provided,
• invalidate first mapping information corresponding to the first write data when a first program operation of the first write data fails and a second program operation of the second write data is successful, and
• update the first mapping information by allocating a new block into which the first data are to be reprogrammed,
• wherein the memory controller comprises a reprogramming circuit configured to, when the first program operation corresponding to the first write data fails, invalidate the first mapping information,
• store first map data including the first mapping information invalidated and valid second mapping information corresponding to the second write command in the storage device, and
• update the first mapping information with a new physical address by loading the first map data onto a mapping table of the buffer memory device in response to a reprogram command.