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Load Source Upgrade Function on Single Level Store

IP.com Disclosure Number: IPCOM000121950D
Original Publication Date: 1991-Oct-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 78K

Publishing Venue

IBM

Related People

Berg, WF: AUTHOR [+5]

Abstract

A method for preserving the data on a load source disk unit when a system is upgraded with a new load source disk unit is disclosed. The data on the original load source disk unit is preserved by transforming the original load source disk unit into an additional non-load source disk unit of the system's Direct Access Storage Device (DASD) Configuration.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Load Source Upgrade Function on Single Level Store

      A method for preserving the data on a load source disk
unit when a system is upgraded with a new load source disk unit is
disclosed.  The data on the original load source disk unit is
preserved by transforming the original load source disk unit into an
additional non-load source disk unit of the system's Direct Access
Storage Device (DASD) Configuration.

      The Load Source Upgrade Function (LSUF) preserves the data on
the original load source disk unit by transforming the original load
source disk unit into an additional non-load source disk unit of the
system's DASD Configuration.  For a single-level store system, like
AS/400*, losing the data from any one disk unit, like the old load
source, loses all of the data.  Thus, for a single-level store
system, preserving the data on the original load source is necessary
to avoid losing all of the data.

      Using the Load Source Upgrade Function, the steps for a
hardware upgrade that includes a new load source disk unit are:
     1.  Install the new hardware, including the new load source disk
unit. The old load source disk unit is still attached to the upgraded
system.
     2.  Install the microcode to the new load source disk unit.
     3.  IPL the system on the new load source disk unit.
     4.  Run the LSUF program.

      On completion, LSUF re-IPLs the system.  After this IPL, all
system configuration information and all user data from the original
system is intact.  The data from the old load source disk unit is
handled as follows:
     -  System information from the old load source disk unit is
moved to the new load source disk unit.  This is information like
the system configuration, the DASD Configuration, the system serial
number, etc.
     -  Load source unique information is deleted from the old load
source disk unit.  This is information which exists on the new load
source disk unit like the system microcode, directories, dump spaces,
etc.
     -  The remainin...