Hardware and software upgrades
This chapter describes high-level procedures for some common hardware and software upgrades.
This chapter includes the following sections:
21.1 Hardware upgrades
The following hardware upgrades or additions can be performed non-disruptively:
•Replacing the head (controller), if you are replacing it with the same type, and with the same adapters
•Replacing the system board
•Replacing or adding an NVRAM or NIC, such as upgrading from 2-port to 4-port gigabit Ethernet (GbE), or 1-port ...