A. The master node may change if the node running the master CRS daemon shuts down causing another node to become the master. Because the default location is a nonshared storage, and only the master node performs backups, the backups could be spread around on many nodes making management or recovery more difficult.

B. The cluster node currently acting as the master node for CRS is the only node that backs up the OCR to the default location, and by changing the location, all cluster nodes will then take backups.

C. This is done to move the backup location into an ASM Cluster File System directory so that the backups benefit from ASM striping and mirroring.

D. If for any reason CRS must be stopped on all nodes for a time spanning a scheduled backup, then on restart, the backup timer will be reset. This could result in longer time duration between automatic backups than the standard four-hour interval.