Abstract: A test system is described for testing a media drive, such as a tape drive. The test system includes a host emulator, a storage library emulator, and a control system. The host emulator communicates with a first interface of the media drive and mimics a host system to the media drive. The storage library emulator communicates with a second interface of the media drive and mimics a storage library system to the media drive. When in operation, one of the host emulator and the storage library emulator transmits a test message to the media drive responsive to an instruction from the control system. Responsive to the test message, one of the emulators receives a test response from the media drive and transmits the test response to the control system. The control system processes the test message and the test response to evaluate the performance of the media drive.