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.
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If needed, install any adapters in node3 and node4, following the instructions in the appropriate adapter installation procedure.
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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.
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Attach power and console connections to the node3/node4 HA pair, following the Installation and Setup Instructions for the platform.
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Attach the network cables.
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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.