What does SDK Failover enable with the default setting?

A.
If a C-Clip cannot be found on the primary cluster, then the request goes to the secondary
cluster

B.
If the communication is interrupted to the primary Centera, all data is rewritten to the
secondary Centera

C.
If the pool has reached its defined quota then data is written automatically to the default pool

D.
In case of a disk failure, data is written automatically to a node connected to the other power
rail