Disclosed is a storage device, the device comprising, a nonvolatile memory device configured to store data; and a storage controller configured to perform logging for a selected memory area of the nonvolatile memory device in response to a specific event based on receiving a telemetry request from a host, and transmit log data collected by the logging in response to the telemetry request, the storage controller including a logging module configured to sample distribution data of a voltage range corresponding to the event type during the logging and provide the sampled distribution data as the log data.