Scheduling random I/O for data storage tape

Details Scheduling random I/O for data storage tape Scheduling random I/O for data storage tape

1996-05-23

1998-12-01

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711158, 395826, 395861, 395863, 395732, G06F 1318

Patent

active

058453164

ABSTRACT:
A system for scheduling read-requests for a serpentine data tape. The transit time between arbitrarily selected locations in the tape is not a linear function of distance between the locations. Despite this non-linearity, a model has been developed which accurately predicts such transit times. Using the model, a list of read-requests is re-organized into a sequence requiring a minimal, or at least smaller, total time to execute.

REFERENCES:
patent: 3623006 (1971-11-01), Balakian et al.
patent: 4888691 (1989-12-01), George et al.
patent: 5644786 (1997-07-01), Gallagher et al.
"Understanding Computers: Memory and Storage", Time Life Books, Alexandria, Virginia, 1987:pp. 46-47.

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