In an Isilon environment, what is the total protection level offered by N+2:1?
A.
Two drives or one node can fail without any data loss in the cluster
B.
Two hot spare drives and one cold spare drive are available for disk failures
C.
Two hot nodes and one cold node are available for node failures
D.
Two drives on one node can fail without causing any data loss in the cluster
N+2:1 means two drives or one node can fail without data loss, so answer A
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