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Algorithm for Controlling Timing of Class Transitions

IP.com Disclosure Number: IPCOM000121457D
Original Publication Date: 1991-Sep-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 1 page(s) / 55K

Publishing Venue

IBM

Related People

Blount, MK: AUTHOR [+5]

Abstract

This article summarizes an algorithm for calculating the next processing date for an object managed using system managed storage constructs based on the transition criteria for the object.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 55% of the total text.

Algorithm for Controlling Timing of Class Transitions

      This article summarizes an algorithm for calculating the
next processing date for an object managed using system managed
storage constructs based on the transition criteria for the object.

      Objects are moved among various types of hardware storage media
to optimize hardware utilization for a given business environment.
This may occur at any of four points in time:
      - soon after a user requests a move,
      - at a predetermined time since the object's creation,
      - at a predetermined time since object was last referenced, or
      - on a predetermined day within a time period (monthly, quarter
ly, yearly).

      A transition happens when an object changes storage and/or
management class.  The point in time when a transition may occur is
derived from the criteria contained in the management class.  A
transition may be immediate when an object's assigned management
and/or storage class have been changed to a different management
and/or storage class by an end user.  However, objects are normally
processed at a predetermined time, their pending action date.  Object
processing also accounts for system down time, extended holidays or
other lapses of processing.  Calculation of the transition time
occurs such that the results are to be the same as if the object had
been processed on the planned date, or within one transition period.

      An object is selected for...