Memory systems and operating methods thereof

A method of operating a memory system, the method comprising:

• receiving, by a controller of the memory system coupled to a three-dimensional non-volatile memory device of the memory system, first page data, the three-dimensional non-volatile memory device including a three-dimensional memory array, the three-dimensional memory array including a plurality of word lines and a plurality of pages that are coupled, wherein the received first page data corresponds to a first word line of the plurality of word lines in units of page data corresponding to one word line;
• generating, by the controller, ith redundant array of independent disks (RAID) parity data based on the received first page data;
• and
• generating, by the controller, (i+1)th RAID parity data based on received second page data calculated based on an (i+1)th word line and the ith RAID parity data, wherein i is a positive integer greater than or equal to 1.

An electronic system comprising:

• a host device;
• and
• a memory system, the memory system including a controller and a three-dimensional non-volatile memory device, wherein the three-dimensional non-volatile memory device includes a three-dimensional memory array, and the three-dimensional memory array includes a plurality of word lines and a plurality of pages that are coupled, and wherein the controller coupled to the three-dimensional non-volatile memory device, and the controller is configured to:
• receive first page data from the host device, wherein the received first page data corresponds to a first word line of the plurality of word lines in units of page data corresponding to one word line;
• generate ith redundant array of independent disks (RAID) parity data based on the received first page data;
• generate (i+1)th RAID parity data based on received second page data corresponding to calculated based on an (i+1)th word line and the ith RAID parity data, wherein i is a positive integer greater than or equal to 1;
• and
• in response to value of i being w−1, write wth RAID parity data into the three-dimensional non-volatile memory device, wherein w is a number of word lines corresponding to one fund.