This metric checks how even failure group disks are laid out for ASM disk groups. ASM strives for an even distribution of file extents and space usage across all disks in a disk group. It accomplishes this through rebalancing. If the disks are different sizes or the failure groups are different sizes then effective rebalancing cannot be achieved. In this situation, configuration changes are required.
This metric only applies to disk groups with normal or high redundancy. This metric will not return data for disk groups with external redundancy, since failure groups are not used in this configuration.
This metric is collected at a time interval of 15 minutes.
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