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Browse Prior Art Database

Concept to Improve Data Access with an Empty Slot in a Cartridge Magazine

IP.com Disclosure Number: IPCOM000113837D
Original Publication Date: 1994-Oct-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Baca, F: AUTHOR [+3]

Abstract

A method for swapping data storage media disks at the drive loader with a multiple disk cartridge having an empty receiving slot is disclosed. The swapping fills said empty slot and produces a new one for the next exchange.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Concept to Improve Data Access with an Empty Slot in a Cartridge
Magazine

      A method for swapping data storage media disks at the drive
loader with a multiple disk cartridge having an empty receiving slot
is disclosed.  The swapping fills said empty slot and produces a new
one for the next exchange.

The invention of this disclosure relates to library management
process, it proposes:
  1.  A concept to improve media unit exchange process by having
      at least one empty slot in the cartridge magazine at all
      times, and the exchange process which comprises:
      o  Pick the cartridge containing the new media unit from
         storage cell,
      o  Move to the drive,
      o  Unload the existing media unit from the drive into the
         empty slot in the cartridge,
      o  Load the new media unit into the drive,
      o  Return the cartridge back to the storage receptacle cell.
  2.  A data storage hierarchy in a library with the following
      priority order to balance the needs between storage capacity
      and performance:
      o  Media units loaded in the drives,
      o  Media units stored in cartridge magazines with at least
         one empty slot
      o  Media units stored in cartridge magazines without empty
         slot.