Abstract: A media cartridge autoloader is disclosed. A rotary arm that operates a cartridge transporter is rotated in one direction to reach a reference position. With reference to the reference position, the rotary arm is rotated through a predetermined angle in the opposite direction to reach a position, which is defined as a home position. The rotary arm includes a flag array, and a non-flag section at an end of the flag array. A photo sensor detects the arrival of the rotary arm at the reference position in response to a detection of the non-flag section.

Abstract: A Point-to-point protocol configured to provide communication exchange between a first device and a second device. The point-to-point protocol is configured to negotiate an exchange rate and establish a connection for the communication exchange between the first and second device. As system dynamics change, the point-to-point protocol is also configured to permit application programs in the first device and the second device to request renegotiation of the exchange rate at any time. The point-to-point protocol is also configured to provide confirmation to a sending application program that information was delivered to a receiving application program.

Abstract: The tape cartridge autoloader library system comprises at least one read/write tape drive, a tape cartridge picker, a single tape cartridge interface, and at least one pair of tape cartridge transport magazines within a compact form factor that fits into a standard library rack mount of cabinet. The autoloader/library system is a complete tape cartridge library that stores, manages, and automatically exchanges a plurality of tape cartridges between the tape drive unit, the single cartridge interface, and the tape cartridge transport magazines. The tape cartridge transport magazines are each configured to receive and store a plurality of individual tape cartridges in a horizontal relationship. The tape cartridge transport magazines also transport the individual tape cartridges within the tape cartridge transport magazine so that a specific one of the tape cartridges is in position for selection by the cartridge picker.

Abstract: A tape cartridge autoloader library system including at least one read/write tape drive, a tape cartridge picker, a single tape cartridge interface, and a pair of tape cartridge magazines within a compact form factor that fits into a standard library rack mount. The autoloader/library system is a complete tape cartridge library that stores, manages, and automatically exchanges a plurality of tape cartridges between the tape drive, the single cartridge interface, and the pair of tape cartridge magazines. The tape cartridge magazines are each configured to receive and store a plurality of individual tape cartridges in a horizontal relationship. The tape cartridge magazines transport the individual tape cartridges within the tape cartridge magazines so that an individual one of the tape cartridges is in position for selection by the cartridge picker.

Abstract: The tape cartridge transport magazine receives and stores tape cartridges in a horizontal orientation relative to the tape cartridge transport magazine to achieve a substantially smaller form factor. Once loaded into the magazine, the tape cartridges are shuffled in a vertical closed loop within the magazine so that any one of the tape cartridges can be positioned for selection by a cartridge picker. During shuffling within the magazine, individual tape cartridges are not flipped or reoriented, but remain properly oriented for selection by the cartridge picker. When used with a tape cartridge autoloader/library system as disclosed herein, a pair of interchangeable magazines can be utilized to store and provide tape cartridges for selection by a rotating cartridge picker.

Abstract: A Point-to-point protocol configured to provide communication exchange between a first device and a second device. The point-to-point protocol is configured to negotiate an exchange rate and establish a connection for the communication exchange between the first and second device. As system dynamics change, the point-to-point protocol is also configured to permit application programs in the first device and the second device to request renegotiation of the exchange rate at any time. The point-to-point protocol is also configured to provide confirmation to a sending application program that information was delivered to a receiving application program.

Abstract: The tape cartridge transport magazine receives and stores tape cartridges in a horizontal orientation relative to the tape cartridge transport magazine to achieve a substantially smaller form factor. Once loaded into the magazine, the tape cartridges are shuffled in a vertical closed loop within the magazine so that any one of the tape cartridges can be positioned for selection by a cartridge picker. During shuffling within the magazine, individual tape cartridges are not flipped or reoriented, but remain properly oriented for selection by the cartridge picker. When used with a tape cartridge autoloader/library system as disclosed herein, a pair of interchangeable magazines can be utilized to store and provide tape cartridges for selection by a rotating cartridge picker.

Abstract: A tape cartridge autoloader library system including at least one read/write tape drive, a tape cartridge picker, a single tape cartridge interface, and a pair of tape cartridge magazines within a compact form factor that fits into a standard library rack mount. The autoloader/library system is a complete tape cartridge library that stores, manages, and automatically exchanges a plurality of tape cartridges between the tape drive, the single cartridge interface, and the pair of tape cartridge magazines. The tape cartridge magazines are each configured to receive and store a plurality of individual tape cartridges in a horizontal relationship. The tape cartridge magazines transport the individual tape cartridges within the tape cartridge magazines so that an individual one of the tape cartridges is in position for selection by the cartridge picker.