A data storage device includes a nonvolatile memory device including a first plane and a second plane; and a controller configured to provide a read command for reading simultaneously the first plane and the second plane, a first address for accessing the first plane and a second address for accessing the second plane, to the nonvolatile memory device, wherein the nonvolatile memory device reads all page types that should be read from the first plane and the second plane, from each of the first plane and the second plane, according to the read command, the first address and the second address.