PowerHA clusters (formerly HACMP) provide powerful capabilities for managing availability and failure recovery. Clusters serve as an effective tool for restoring system functionality and ensuring data consistency – however, improper use and a lack of understanding can lead to unexpected consequences.
I invite you to read the second part of the article on maintaining PowerHA clusters:
https://www.linkedin.com/pulse/ibm-powerha-systemmirror-clusters-how-maintain-without-wiktorek-ivvfc
[PL] Link do polskiej wersji: