Which three statements are true about Oracle Clusterware 12c Flex Cluster architecture?
A.
Each leaf node must be connected to storage shared across all cluster nodes.
B.
Hub nodes require direct access to the voting disks.
C.
Each leaf node must be connected to storage shared across all leaf nodes.
D.
Each hub node must be connected to storage shared across all hub nodes.
E.
Hub nodes require direct access to the OCR file.
F.
Leaf nodes require direct access to the voting disks.
Explanation:
BE: In Oracle Flex Cluster, only Hub nodes will have direct access to the OCR/Voting disks.
D: The Leaf nodes are different from the Hub nodes. They don’t need to have direct access to the underlying storage; rather they access the storage/data through
Hub nodes.
http://allthingsoracle.com/oracle-database-12c-new-features-part-3/
B,D,E CORRECT
each Hub Node must be connected to storage that is shared across the group of Hub Nodes.
Zero or more Leaf Nodes may be connected to a Flex Cluster. Each Leaf Node is connected
to the cluster through a Hub Node. Leaf Nodes do not require direct access to the shared storage connected to the Hub Nodes.
Only the Hub Nodes require direct access to the OCR and voting disks.
If it’s a Flex Cluster, Flex ASM is configured too So D is not entirely True.
But I think is the other options are wrong.
I will go for B,D,E
Sorry D is correct.
It doesnt matter if the connection is locally or remote (flex ASM). Hub nodes need to be connect to the Storage