Cisco UCS C220 M4

3-10
Cisco UCS C220 M4 Server Installation and Service Guide
OL-32473-01
Chapter 3 Maintaining the Server
Preparing for Server Component Installation
Serial Number Location
The serial number for the server is printed on a label on the top of the server, near the front.
Hot-Swap or Hot-Plug Replacement
Some components can be removed and replaced without powering off and removing AC power from the
server. This type of replacement has two varieties: hot-swap and hot-plug.
• Hot-swap replacement—You do not have to precondition or shut down the component in the
software before you remove it for the following components:
– SAS/SATA drives
– Cooling fan modules
– Power supplies (when 1+1 redundant)
• Hot-plug replacement—You must take the component offline before removing it for the following
component:
– NVMe PCIE SSD drives