This IBM® Redbooks® publication helps strengthen the position of the IBM PowerHA® SystemMirror® solution with a well-defined and documented deployment models within an IBM Power Systems™ virtualized environment, which provides customers with a planned foundation for business resilience and disaster recovery for their IBM Power Systems infrastructure solutions.

This publication addresses topics to help meet customers’ complex high availability and disaster recovery requirements on IBM Power Systems servers to help maximize their systems’ availability and resources, and provide technical documentation to transfer the how-to-skills to users and support teams.

This book is targeted at technical professionals (consultants, technical support staff, IT Architects, and IT Specialists) who are responsible for providing high availability and disaster recovery solutions and support with IBM PowerHA SystemMirror Standard and Enterprise Editions on IBM Power Systems servers.

This book was produced by a team of specialists from around the world working at the International Technical Support Organization, Poughkeepsie Center.

Dino Quintero is a Complex Solutions Project Leader and an IBM Level 3 Certified Senior IT Specialist with the ITSO in Poughkeepsie, New York. His areas of expertise include enterprise continuous availability, enterprise systems management, system virtualization, technical computing, and clustering solutions. He is an Open Group Distinguished IT Specialist. Dino holds a Master of Computing Information Systems degree and a Bachelor of Science degree in Computer Science from Marist College.

Shawn Bodily is an IBM Champion for Power Systems and a Senior IT Consultant for Clear Technologies in Dallas, Texas. He has 24 years of IBM AIX® experience with the last 20 years specializing in high availability and disaster recovery that is primarily focused around PowerHA SystemMirror. He is a double AIX Advanced Technical Expert, and is certified in IBM POWER® Systems and IBM Storage. He has written and presented extensively about high availability and storage at technical conferences, webinars, and onsite to customers. He is an IBM Redbooks platinum author who has co-authored 10 other IBM Redbooks publications and three IBM Redpaper™ publications.

Bernhard Buehler is an IT Specialist in Germany. He works for IBM STG Lab Services in La Gaude, France. He has worked at IBM for 35 years and has 26 years of experience in AIX and the availability field. His areas of expertise include AIX, PowerHA SystemMirror, HA architecture, script programming, and AIX security. He is a co-author of several IBM Redbooks publications. He is also a co-author of several courses in the IBM AIX curriculum.

Bunphot Chuprasertsuk is a Senior Technical Specialist in Bangkok, Thailand. He has a Bachelor of Science degree in Information and Communication Technology from Mahidol University. He has five years of experience in AIX, POWER, and storage. He has extensive experience in the banking and retail industries, and with large, complex enterprise organizations and dynamic environments.

Bing He is a Consulting IT Specialist of the IBM Advanced Technical Skills (ATS) team in China. He has 15 years of experience with IBM Power Systems. He has worked at IBM for about 10 years. His areas of expertise include PowerHA SystemMirror, IBM PowerVM®, Disaster Recovery, HANA on Power, and performance tuning on AIX.

Maria-Katharina Esser is an IT Specialist for pre-sales technical support and works for the IBM System and Technology Group (STG) in Munich, Germany. She has worked for IBM for 28 years, and has 17 years of experience in AIX, POWER, and storage.

Fabio Martins is a Senior Software Support Specialist with IBM Technical Support Services in Brazil. He has worked at IBM for 12+ years. His areas of expertise include IBM AIX, IBM PowerVM, IBM PowerKVM, IBM PowerHA SystemMirror, PowerVC, IBM PureSystems®, IBM DS8000®, IBM Storwize®, Linux, and Brocade SAN switches and directors. He is a Certified Product Services Professional in Software Support Specialization and a Certified Advanced Technical Expert on IBM Power Systems. He has worked extensively on IBM Power Systems for Brazilian customers, providing technical leadership and support, including how-to questions, problem determination, root cause analysis, performance concerns, and other general complex issues. He holds a bachelor degree in Computer Science from Universidade Paulista (UNIP).

Matthew W Radford is a UNIX support specialist in the United Kingdom. He has worked in IBM for 18 years and has eight years of experience in AIX and High Availability Cluster Multi-Processing (IBM HACMP™). He holds a degree in Information Technology from the University of Glamorgan. Matt has co-authored two other IBM Redbooks publications.

Anthony Steel is a Senior IT Specialist in ITS Singapore. He has 22 years experience in the UNIX field, predominately AIX and Linux. He holds an honors degree in Theoretical Chemistry from the University of Sydney. His areas of expertise include scripting, system customization, performance, networking, high availability, and problem solving. He has written and presented on LVM, TCP/IP, and high availability both in Australia and throughout Asia Pacific.

Thanks to the following people for their contributions to this project:

Octavian Lascu
International Technical Support Organization, Poughkeepsie Center

Paul Moyer, Mike Coffey, Rajeev Nimmagadda, Prasad Dasari, Sharath Kacham
Aricent Technologies, an IBM Business Partner

Paul Desgranges
Groupe BULL

Kwan Ho Yau
IBM China

Ravi Shankar, Steven Finnes, Minh Pham, Alex Mcleod, Tom Weaver, Teresa Pham, Gus Schlachter, Isaac Silva, Alexa Mcleod, Timothy Thornal, PI Ganesh, Gary Lowther, Gary Domrow, Esdras E Cruz-Aguilar
IBM US

Jes Kiran, Srikanth Thanneeru, Madhusudhanan Duraisamy, Prabhanjan Gururaj
IBM India

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