What is the advantage of setting the ASM-preferred mirror read for the stretch cluster configuration?
A.
It improves resync operations.
B.
This feature enables much faster file opens.
C.
It improves performance as fewer extent pointers are needed in the shared pool.
D.
It improves performance by reading from a copy of an extent closest to the node.
Explanation:
Preferred Read Failure Groups
When you configure Oracle ASM failure groups, it might be more efficient for a node to read from an extent that
is closest to the node, even if that extent is a secondary extent. In other words, you can configure Oracle ASM
to read from a secondary extent if that extent is closer to the node instead of Oracle ASM reading from the
primary copy which might be farther from the node. Using the preferred read failure groups feature is most
useful in extended clusters.