Browse Prior Art Database

Handling Damaged Media in an Automated Library System

IP.com Disclosure Number: IPCOM000113547D
Original Publication Date: 1994-Sep-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Ford, RA: AUTHOR [+4]

Abstract

Disclosed is a method for detecting and handling damaged media in an automated library. By having the automated library automatically handle damaged media, human intervention and delays in library operations are minimized.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 94% of the total text.

Handling Damaged Media in an Automated Library System

      Disclosed is a method for detecting and handling damaged media
in an automated library.  By having the automated library
automatically handle damaged media, human intervention and delays in
library operations are minimized.

      The IBM 3490 and 3490E tape devices currently determine a
suspected reason for a load or unload failure.  When a failure
occurs, that reason is communicated to the library manager through
the 3490 control unit.  See the Figure for a block diagram of an
automated library system.  Based on the reason, the library manager
initiates a recovery process to attempt to complete the load or
unload operation.  If it was successful, operations continue.  If the
recovery process was unsuccessful, the library manager determines
whether the cartridge is accessible by the automation robotics and
whether the failure reason is one that indicates a cartridge/media
problem.  If the problem is one of a suspected cartridge/media
problems, the library manager will schedule to move the cartridge
from the device to the eject station of the library.  It will also
send a message to all attached hosts, indicating that a cartridge,
identified by its volume serial number, has been ejected from the
library.  Also included in the message is the suspected reason for
the damage to the cartridge/media.  It is then up to an operator to
remove the cartridge from the eject station, determine what needs to
b...