ASM_PREFERRED_READ_FAILURE_GROUPS

Property	Description
Parameter type	String
Syntax	`ASM_PREFERRED_READ_FAILURE_GROUPS = <diskgroup_name>.<failure_group_name>, ...`
Default value	NULL
Modifiable	`ALTER SYSTEM`
Basic	No
Oracle RAC	The value is different on different nodes

ASM_PREFERRED_READ_FAILURE_GROUPS specifies the failure groups that contain preferred read disks. Preferred disks are instance specific. This parameter is only valid in ASM instances.