Mechanism for minimizing unload times in a tape drive system

Details Mechanism for minimizing unload times in a tape drive system Mechanism for minimizing unload times in a tape drive system

2006-05-24

2008-05-13

Wong, K. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

Reexamination Certificate

active

07372657

ABSTRACT:
In one embodiment, a method and apparatus for minimizing unload times in a tape drive system is disclosed. The method includes: writing to a tape in serpentine format; reaching a comparison point on the tape, wherein at the comparison point an actual capacity is compared to an expected capacity; utilizing the comparison at the comparison point to estimate a distance from the comparison point until a guaranteed capacity for the tape is reached; and determining a turn-around point on the tape based on the estimated distance, wherein at the turn-around point a tape drive writing to the tape to stop writing in a first direction and then continue writing in a second direction opposite from the first direction and towards a physical beginning of the tape. Other embodiments are also disclosed.

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StorageTek Product: T10000 tape drive; StorageTek; http://www.storagetek.com/products/product—page2773.html.
Sun/StorageTek T10000 tape drive; Sun Microsystems, Inc., Technical Brief, Oct. 2005.
Sun StorageTek T10000 Tape Drive; Storage Solutions, Sun Microsystems, Inc., 2006.

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