Cause
The number of disks selected were insufficient for the selected redundancy level.
The number of disks selected were insufficient for the selected redundancy level.
For a disk group with redundancy level 'string', at least 'string' disks are recommended.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/common_errormessages.htm
https://community.oracle.com/message/9275612
https://community.oracle.com/message/11335469
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