Install the new nodes
When you upgrade by moving storage, you begin by installing the node3 and node4 and attaching power, console, and network connections to the new nodes.
If needed, install any adapters in node3 and node4, following the instructions in the appropriate adapter installation procedure.
Install the new nodes, following the Installation and Setup Instructions for the platform.
Do not attach disk shelves from the original nodes to the new nodes at this point.
Attach power and console connections to the node3/node4 HA pair, following the Installation and Setup Instructions for the platform.
Attach the network cables.
Transfer all remaining cables, other than storage shelf cables, from the node1/node2 HA pair to corresponding ports on node3/node4 respectively.
This includes Fibre Channel and Ethernet cables that are not used to attach storage shelves.