Abstract: An automatic tape loader system for a media storage drive, such as a digital linear tape drive, comprises a robotics portion adapted interact with an interface drive, such as a Small Computer System Interface (SCSI) drive. An integrated controller is provided to integrate the mechanical operations of various components of the media storage device and the drive operations of the media storage device. A robotics module of the integrated controller is adapted to communicate with various mechanisms of the media storage device and various sensors associated with these mechanisms to control various mechanical operations of the media storage device. External devices such as an operator control panel (OCP) and a bar code reader may also be connected to the integrated controller to exchange information or commands between various components of the media storage device.

Abstract: A system for verifying write data includes a host computer, a controller having a write data path network and a read data path network, and a disk drive array for storing write data. The host computer provides host cyclic redundancy check characters that are appended to blocks of input write data. The write data blocks are divided into subblocks that are processed through separate channels and ports. Port cyclic redundant check characters are appended to each data subblock, including a parity subblock. The read data path network is coupled to receive the data subblocks with the appended host and port cyclic redundancy check characters from the write data path network means and has error detection circuitry for verifying the write data during the write mode.