The VCS DiskGroup agent has a configurable option PanicSystemOnDGLoss. It enables fast failover of application on loss of storage connectivity or when disk group commands are not responding. On extremely busy systems, it can cause halting of the system due to consecutive monitor timeouts. Prior to VCS 5.1, it was set to on (1) by default. Based on feedback, we changed the default from on (1) to off (0). However, we could still only turn on/off the behavior. With VCS 6.0, we have added flexibility to set it to a value based on the use case.
0: Do not halt the system.
1: Halt the system if either disk group goes into disabled state or the disk group resource faults due to monitor timeout.
2: Halt the system if disk group goes into disabled state.
3: Halt the system if disk group resource faults due to monitor timeout.