As an alternative to incurring hours or days of downtime while the head is repaired, clustering allows a peer appliance to provide service while repair or replacement is performed.
Clusters support rolling upgrade of software, which can reduce the business disruption associated with migrating to newer software.
Question # 10
Which three statements are correct about cluster configuration of ZFS Storage Appliances?
A.
In a cluster environment, both nodes can be owners of each storage pool.
B.
Only one controller in a cluster can be assigned resources.
C.
To use the resources of both nodes simultaneously, you need at least two storage pools: one that maps to node1 and another that maps to node2.
D.
Clusters can be configured in two ways: active-active or active-passive.
E.
You can assign a networking and storage pool to a controller in a cluster.
D: Many people use the terms active-active to describe a cluster in which there are two (or more) storage pools, one of which is assigned to each head along with network resources used by clients to reach the data stored in that pool, and active-passive to refer to which a single storage pool is assigned to the head designated as active along with its associated network interfaces. Both topologies are supported by the Oracle ZFS Storage Appliance.