IBM Flex System p270 Compute Node Installation And Service Manual page 106

What to do next
If you have changed the configuration of the compute node or if this is a different compute node than the
one you removed, you must configure the compute node. You might also have to install the compute
node operating system.
See Chapter 4, "Installing the operating system," on page 23 for detailed information about these tasks.
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Power Systems: IBM Flex System p270 Compute Node Installation and Service Guide