What is required to ensure that the cluster can recover from a node failure?

A.
Set the regeneration buffer size to the equivalent of one node of space

B.
The Centera will auto configure the proper space utilization based on a node/drive ratio

C.
Calculate the proper node/drive ratio and then set the regeneration buffer size on each node to equal that value

D.
Set one node as the spare and set the active/standby switch in the CLI to Standby