Browse Prior Art Database

Automatic Tape Library Maintenance

IP.com Disclosure Number: IPCOM000079724D
Original Publication Date: 1973-Aug-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Eichhorn, TF: AUTHOR [+2]

Abstract

When a plurality of automatically loadable magnetic tape units is operated with an automated tape reel or cartridge library, such as shown by Burke et al in U. S. Patent 2,941,738, system performance is enhanced by automatically fetching a cleaning tape to clean such tape units. The cleaning tape can be constructed using any known or suitable cleaning coating, a series of coatings, and may include a magnetic recording label area for receiving signals logging cleaning operations, error statistics related to such cleaning, identification of units cleaned, time of such cleaning, and the like. Such magnetic tape units can become contaminated during normal operations by debris carried on magnetic tape.

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Automatic Tape Library Maintenance

When a plurality of automatically loadable magnetic tape units is operated with an automated tape reel or cartridge library, such as shown by Burke et al in U. S. Patent 2,941,738, system performance is enhanced by automatically fetching a cleaning tape to clean such tape units. The cleaning tape can be constructed using any known or suitable cleaning coating, a series of coatings, and may include a magnetic recording label area for receiving signals logging cleaning operations, error statistics related to such cleaning, identification of units cleaned, time of such cleaning, and the like.

Such magnetic tape units can become contaminated during normal operations by debris carried on magnetic tape.

Two criteria for the need of the cleaning are used. First, after a given number of hours of operation of the system, various tape units can be periodically cleaned. It is preferred that the cleaning of the various tape units be staggered, such that normal system operations can ensue during the cleaning operation through the use of other tape units. The second criteria is degradation in the reading and writing capability. This is determined by noting the number of errors per unit time on the various tape units. Controlling devices, not shown, log such errors with operating time. Such logging can be under program control or completely under hardware sequence control.

The thresholds for periodic cleaning operations can be adjusted. That i...