Storage device comprising nonvolatile memory and controller controlling write of nonvolatile memory device and operating method of storage device

The present invention relates to a storage device. The storage device of the present invention, comprising a plurality of memory cells, a plurality of memory cells are composed of a nonvolatile memory device, and a controller for controlling the nonvolatile memory device is divided into a plurality of pages. Storage device according to the present invention is collected, performs at the same time the common write for two or more pages on the basis of two or more write data groups, and two or more write data between two or more write data group to be written to more than one page, It performs a sequential write by individual for each of more than one page on the basis of the groups.