Summary of changes
This section describes the technical changes made in this edition of the book and in previous editions. This edition also includes minor corrections and editorial changes that are not identified.
Summary of Changes
for SG24-6374-08
for GDPS Family: An Introduction to Concepts and Capabilities
as created or updated on October 31, 2013.
October 2013, Update to Ninth Edition
New and changed information
•The following sections were added or updated in support of the GDPS/Active-Active V1R4 enhancements:
March 2013, Ninth Edition
New and changed information
•The following sections are updated with information about the GDPS/PPRC and GDPS/PPRC HM support of CONSISTENT FlashCopy® exploiting the IBM FlashCopy Freeze capability of the disk subsystems:
•The following sections are updated with the GDPS Health Check management panel information:
•Information about the legacy FREEZE option is removed from the following sections:
•The following new sections are added to describe add-on GDPS tools available for each of the GDPS products:
•Some screen captures are refreshed.
•A number of the sections are renamed or reorganized for clarity.
•A number of small changes are made for clarity or to correct minor errors.
July 2012, Eighth Edition
New information
•A new section
“SYSRES Management” on page 84 has been added to remove the requirement for clients to manage and maintain their own procedures when IPLing a system on a different alternate SYSRES device.
•A new section
“Region Switch” has been added in
5.4, “Managing the GDPS environment” on page 131 to reflect a process for performing a planned Site Switch between the two sites that act as the application and recovery sites. New capabilities of the GDPS/XRC product assist with and simplify various procedural aspects of a Site Switch or Return Home operation.
Changed information
•The RCMF offerings are generally replaced by more full featured GDPS offering peers, so the RCMF appendixes have been removed.
June 2011, Seventh Edition
New information
•This document was updated to reflect the changes and new capabilities of GDPS V3.8 and the GDPS/Active-Active solution
•A new section
“Freeze policy (PPRCFAILURE policy) options” has been updated to include information about the new PPRCFAILURE and PRIMARYFAILURE freeze/swap policy options and enhanced Freeze&Stop Conditional processing.
Changed information
August 2010, Sixth Edition
New information
•This document has been updated to reflect changes and new capabilities in GDPS V3.7 including support for PPRC secondary devices defined in an alternate subchannel set and xDR improvements with starting and stopping Linux systems on System z.
Changed information
•References to Metro Mirror were replaced by PPRC when discussing the IBM synchronous mirroring architecture. The brand name of IBM Metro Mirror continues to be used for the implementation of the PPRC architecture included on the IBM Enterprise Storage Server® (ESS) and DS8000® family of storage products. A similar change was made for XRC and the IBM brand name of z/OS Global Mirror.
•There was a minor reordering of the chapters following the overview of the four primary GDPS offerings.
September 2009, Fifth Edition
New information
•This document has been updated to reflect changes and new capabilities in GDPS V3.6.
Changed information
September 2008, Fourth Edition
New information
•This document has been updated to reflect changes and new capabilities in GDPS V3.5.
March 2007, Third Edition
New information
•This document has been updated to reflect changes and new capabilities in GDPS V3.3 and GDPS V3.4.
•Multiplatform for System z now supports native zLinux LPARs.
•GDPS/PPRC and GDPS HyperSwap Manager have been enhanced to provide coexistence support for HyperSwap and IBM TDMF®.
•IBM IMS™ XRF coexistence support added to GDPS/PPRC and GDPS HyperSwap Manager.
•GDPS/PPRC provides for transparent exploitation of the PPRC Failover and Failback support if available in all disk subsystems.
•GDPS/Global Mirror has been enhanced to provide “No UCB FlashCopy’ support.
•Zero Suspend FlashCopy support added to GDPS/XRC and GDPS/MzGM.
•Availability of a GDPS Qualification Program for vendor storage subsystems.
•New WEB GUI interface support added for GDPS/PPRC.
•GDPS/PPRC and GDPS HyperSwap Manager have been enhanced so that a HyperSwap can now be triggered by a non-responsive primary device, in addition to the existing error conditions that can cause a HyperSwap.
•GDPS/PPRC has been enhanced to support the new GDPS Enhanced Recovery Services in IBM z/OS 1.8.
•The ability has been added to GDPS/PPRC to do a planned freeze covering both CKD and FBA devices.
•FlashCopy support for Open LUN devices has been added to GDPS/PPRC and GDPS HyperSwap Manager.
•GDPS/XRC has been enhanced to support the new asynchronous write support for system logger stagging data sets added in z/OS 1.7.
Changed information
•GDPS/XRC scalability enhancements allow up to 20 SDMs in a single LPAR, of which 13 can be coupled together into a cluster. Up to 14 clusters can be coupled together increasing the architectural limit to 182 SDMs.
December 2005, Second Edition
This revision reflects the addition, deletion, or modification of new and changed information as described in this section.
New information
•Information about the GDPS/GM offering has been added