Which step is needed first to ensure success of this upgrade?

A customer has an IBM SAN Volume Controller cluster with two CF8 nodes that contain one four-port Fiber Channel card. The customer desires to replace these two nodes with new SV1 nodes running compression. The customer requires that this upgrade occurs without downtime.

Which step is needed first to ensure success of this upgrade?
A . Ensure the CF8 nodes are running at least software version v7.7.1.
B . Ensure the new SV1 nodes have one expansion enclosure with SSD drives.
C . Make sure there are at least two Fibre Channel cards in the SV1 Nodes.
D . Determine if the new SV1 nodes have a compression accelerator.

Answer: A

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