Moving to a new namenode

[Mag Gam]

What is the correct procedure to move to a new namenode? My current
namenode is running on a 2 core with 4gb of memory. I am moving to a
new host,  8 core x 32 GB of memory. My question are: what is the
proper way to move to the new namenode, and what can I do to enhance
the performance of it since the new hardware is much superior than the
old one.