STORAGE DEVICE AND OPERATING METHOD THEREOF

A storage device includes a nonvolatile memory device including a replay protected memory block; and a memory controller for, as a submission command requesting access to the replay protected memory block is received from an external host including a host memory having a plurality of Physical Region Pages (PRPs), acquiring a host replay protected memory block data frame stored in one of the plurality of PRPs included in the external host and accessing the replay protected memory block. The submission command may include information on a position at which the memory controller is to store a response to the submission command among the plurality of PRPs.