Abstract: A storage device may receive, from an external device, a target read recovery level indicating information on a read command execution completion time and an error recovery amount requested by the external device, may read, from a memory, data requested by a read command transmitted by the external device, and may transmit, to the external device, a response regarding a result of executing the read command transmitted by the external device within the read command execution completion time indicated by the target read recovery level.

Abstract: The present disclosure relates to a memory system capable of encrypting and storing data, and a memory controller. The memory controller may include a first interface configured to perform data Communication with a first external device, a second interface configured to generate a signal for controlling an operation of a second extern& device and transmit the signal; and a processor configured to receive, from the first external device, a data write command to write data to the second external device, encrypt the data by using one of a plurality of keys stored in a key area provided in the first external device in response to the data write command, and then control the encrypted data to be written to the second external device.