Abstract: A storage device for performing an access authority control and an operating method thereof are disclosed. The storage device including processing circuitry configured to store a plurality of security information associated with the plurality of namespaces in response to a command from the host, each of the security information including virtual machine information associated with a corresponding one of the plurality of virtual machines and unique information associated with the corresponding virtual machine, the virtual machine information including an identifier for the corresponding virtual machine, and the unique information including unique information uniquely set for the corresponding virtual machine, extract at least first information by decoding a data access request received from the host device, and abort processing of the data access request based on the security information and the extracted at least one first information.

Abstract: A method of controlling a master device includes, providing a measured service level by measuring a service level with respect to requests of a master device that is connected to a slave device through an interconnect device and generates the request to demand services from the slave device and controlling a power level of a request control circuit included in the master device based on the measured service level. Power consumption of the master device and the system including the master device is reduced without performance degradation by controlling the power level of the request control circuit adaptively based on the measured service level.

Abstract: A storage device includes a memory controller to receive a first signal from an external device through a first channel, obtain data from a memory based on the first signal, and output the data to the external device through a second channel. The data is output through the second channel in a case where a time interval between a time when the first signal is received and a time when the data are obtained is greater than a first reference interval.

Abstract: A method of controlling a master device includes, providing a measured service level by measuring a service level with respect to requests of a master device that is connected to a slave device through an interconnect device and generates the request to demand services from the slave device and controlling a power level of a request control circuit included in the master device based on the measured service level. Power consumption of the master device and the system including the master device is reduced without performance degradation by controlling the power level of the request control circuit adaptively based on the measured service level.

Abstract: A storage device includes a memory controller to receive a first signal from an external device through a first channel, obtain data from a memory based on the first signal, and output the data to the external device through a second channel. The data is output through the second channel in a case where a time interval between a time when the first signal is received and a time when the data are obtained is greater than a first reference interval.

Abstract: An operating method of a storage device includes receiving, at a hardware read path controller, a read command, determining, at the read path controller, a match of an index corresponding to the read command, reading data corresponding to the read command from a buffer memory when the determination result indicates index hit, and reading, at the read path controller, data corresponding to the read command from a nonvolatile memory device by using a map table when the determination result indicates index miss.