Tape drive

Columns: Year | Manufacturer | Model | Capacity | Advancements
1993 | DEC | Tx87 | Tape directory ( database with first tapemark nr on each serpentine pass ) | 1995 | IBM | 3570 | Servo tracks - factory-recorded tracks for precise head positioning ( Time Based Servoing or TBS ) Tape on unload rewound to the midpoint - halving access time ( requires two-reel cassette ) | 1996 | HP | DDS3 | 12 GB | Partial Response Maximum Likelihood ( PRML ) reading method - no fixed thresholds | 1997 | IBM | VTS | Virtual tape - disk cache that emulates tape drive | 1999 | Exabyte | Mammoth-2 | 60 GB | The small cloth-covered wheel cleaning tape heads Inactive burnishing heads to prep the tape and deflect any debris or excess lubricant Section of cleaning material at the beginning of each data tape | 2000 | Quantum | Super DLT | 110 GB | Optical servo precisely positioning the heads

Example questions:
What is the model name of the tape drive whose manufacturer began in 1911 and was founded in Endicott , New York ? | What is the model name of the tape drive whose manufacturer was an American multinational information technology company headquartered in Palo Alto , California ? | What is the model name of the tape drive whose manufacturer is formerly known as the Minnesota Mining and Manufacturing Company ? | What is the model name of the tape drive whose manufacturer had a long list of mergers that formed Unisys ?

Answers:
726 | DDS3 | Quarter Inch Cartridge | UNISERVO