On an Oracle Database Appliance single-node server, OAKD is always in the leader role. Oracle Database Appliance single-node systems do not have SAS storage, hence LSI library are not used. Fishwrap library is used for storage discovery.
There are no SAS HBA (Controller) and hence LSI events notification is available. UDEV events notification are used for disk hot plugs. Instead of predictive failure checks, NVMe disks uses critical warning check using OAK NVMe interface.