Re: Normal redundancy ask dg

Posted by ErmanArslansOracleBlog on Aug 17, 2018; 10:45am
URL: http://erman-arslan-s-oracle-forum.124.s1.nabble.com/Normal-redundancy-ask-dg-tp6585p6587.html

Normal redundancy means  a 2-way mirror. It is a disk layer redundancy.
By multiplexing OCR and Voting disks, you also gain a file layer redundancy (in addition to the disk level redundancy)

Voting disk/OCR rules are as follows;

External redundancy = 1 voting disks , 1 OCR
Normal redundancy = 3 voting disks , 2 OCR
High redundancy = 5 voting disks,  3 OCR.

I give these numbers according to the Oracle Support note -> Minimum size required for OCR VOTE diskgroup which includes Grid Infra Management Repository (GIMR) (Doc ID 2106644.1)