Browse Prior Art Database

Automatic Reconfiguration Facility Enhancements

IP.com Disclosure Number: IPCOM000106181D
Original Publication Date: 1993-Oct-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Bostick, JE: AUTHOR [+4]

Abstract

Disclosed is a method that enhances the mechanisms for storage reconfiguration between logical partitions.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 65% of the total text.

Automatic Reconfiguration Facility Enhancements

      Disclosed is a method that enhances the mechanisms for storage
reconfiguration between logical partitions.

      Computer storage can be reconfigured between logical partitions
running in LPAR mode in a computer such as IBM ES/9000*.  The
Reconfiguration Facility (ARF) allows a logical partition to
deactivate some other partitions and take over their storage.  This
capability can be used, for example during recovery.  A backup
partition may be allocated a minimal amount of storage and serve as a
stanby backup for another, primary system.  When the primary system
fails, the standby partition takes over its function.  If additional
memory is needed, the reconfiguration facility can be used to take
over storage resources other partitions.

      ARF non-specific deactivation causes deactivation of all
partitions which are currently using any portion of reserved main
storage or any portion of reserved expanded storage of the issuing
partition.

      Previous to this enhancement, DEACTIVATE(ALL) only worked for
partitions that had been defined to have overlapping storage ranges
(via the origins specified on the LP Definition Frame).

      This disclosure describes a technique for allowing a customer
to specify (via the LPCPLD frame) additional partitions to be
deactivated upon the issuance of DEACTIVATE(ALL).  The storage of
these deactivated partitions becomes available for use by the
partition t...