PR Types Supported : PR_WE_AR PR_EA_RO PR_WE_RO PR_EA PR_WE PR_EA_AR Sat Dec 3 04:41:22 CST 2016 9.12.5 Scenario summary Except for the cluster split and merge policies, PowerHA provides a disk fencing quarantine  policy to keep HA and data safe in case of cluster split scenarios. It also takes effect in the  case of sick but not dead clusters. For more information, see 9.1.1, “Causes of a partitioned  cluster” on page 325. Chapter 9. Cluster partition management update  409