reg ASM - External redundancy

Posted by satish on Jul 11, 2018; 10:44am
URL: http://erman-arslan-s-oracle-forum.124.s1.nabble.com/reg-ASM-External-redundancy-tp6383.html

Dear Erman,

We are planning to use external redundancy diskgroup for datafiles(2node RAC).we would like to understand the below scenarios

external redundancy
using raid 1(mirror at storage level)

1)If some disk was failed(permanent failure/temporary failure),then will we loose any data?
2)Do we need to go for restore in this case?