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Cisco UCS C24 Server Installation and Service Guide
OL-26647-01
Chapter 3 Maintaining the Server
Preparing for Server Component Installation
Preparing for Server Component Installation
This section describes how to prepare for component installation, and it includes the following topics:
• Required Equipment, page 3-6
• Shutting Down and Powering Off the Server, page 3-6
• Removing and Replacing the Server Top Cover, page 3-7
• Removing and Replacing the Front Chassis Panel, page 3-8
• Replaceable Component Locations, page 3-9
• Serial Number Location, page 3-9
Required Equipment
The following equipment is used to perform the procedures in this chapter:
• Number 2 Phillips-head screwdriver
• Electrostatic discharge (ESD) strap or other grounding equipment such as a grounded mat
Shutting Down and Powering Off the Server
The server can run in two power modes:
• Main power mode—Power is supplied to all server components and any operating system on your
drives can run.
• Standby power mode—Power is supplied only to the service processor and the cooling fans and it
is safe to power off the server from this mode.
You can invoke a graceful shutdown or an hard shutdown by using either of the following methods:
• Use the CIMC management interface.
• Use the Power button on the server front panel. To use the Power button, follow these steps:
Step 1 Check the color of the Power Status LED (see the “Front Panel LEDs” section on page 3-2).
• Green—the server is in main power mode and must be shut down before it can be safely powered
off. Go to
Step 2.
• Amber—the server is already in standby mode and can be safely powered off. Go to Step 3.
Step 2 Invoke either a graceful shutdown or a hard shutdown:
Caution To avoid data loss or damage to your operating system, you should always invoke a graceful shutdown
of the operating system.
• Graceful shutdown—Press and release the Power button. The operating system performs a graceful
shutdown and the server goes to standby mode, which is indicated by an amber Power Status LED.
• Emergency shutdown—Press and hold the Power button for 4 seconds to force the main power off
and immediately enter standby mode.
Step 3 Disconnect the power cords from the power supplies in your server to completely power off the server.