Abstract: A data archival device having an embedded controller compatible with a host computer interface for disk drives having embedded controllers. The data archival device provides for simultaneous writing of data to a tape media coupled with an interface of a host computer while reading of data from a disk coupled with the interface. This simultaneous access to both the tape and disk drives is accomplished through use of an application process for managing access to the tape drive, as well as controlling the tape drive to "own" the interface only during periods of time when information is being communicated over the interface. The tape drive may receive information over the interface into an on-board buffer and then release the interface to allow the host computer to access the disk drive. The tape drive may then continue "off-line" to write data to a tape media or to perform other functions not requiring communication of information over the interface.

Abstract: A tape drive with a tape head subassembly that can remotely adjust the position of the head. The drive has a baseplate that holds the cassette in place relative to the tape head. The head is operatively connected to a housing that is mounted to the baseplate by two adjustment screws. The housing also has a pivot member that allows the housing to pivot about the baseplate. The screws are located relative to the head, so that turning one of the screws rotates the housing and head such that it is parallel with the playing surface of the tape. Turning the other screw rotates the housing, such that the head is perpendicular with the length of the tape. A spring is attached to the baseplate and housing to hold the position of the head during adjustment. The spring, head and screws are positioned in a parallelogram so that adjustment of one of the screws rotates the head in only one plane.