If you purchased a new SuperCluster system running release 2.3 or later, your Oracle installer will implement this feature by default when all of the following requirements are satisfied:
The system has at least two database domains and fewer than five storage servers.
You are running OEDA release January 2017 or later.
You meet the software requirements listed in Software Requirements for Quorum Disk Manager.
You will have at least one high redundancy disk group.
If the system has three storage servers in place, then two quorum disks will be created on the first two database domains of the cluster selected by your Oracle installer.
If the system has four storage servers in place, then one quorum disk will be created on the first database domain selected by your Oracle installer.