Power off the server
The server remains in a standby state when it is connected to a power source, allowing the Lenovo XClarity
Controller to respond to remote power-on requests. To remove all power from the server (power status LED
off), you must disconnect all power cables.
Power button location and power LED are specified in:
•
Chapter 2 “Server components” on page 19
• “Troubleshooting by system LEDs and diagnostics display” on page 36
To place the server in a standby state (power status LED flashes once per second):
Note: The Lenovo XClarity Controller can place the server in a standby state as an automatic response to a
critical system failure.
• Start an orderly shutdown using the operating system (if supported by your operating system).
• Press the power button to start an orderly shutdown (if supported by your operating system).
• Press and hold the power button for more than 4 seconds to force a shutdown.
When in a standby state, the server can respond to remote power-on requests sent to the Lenovo XClarity
Controller. For information about powering on the server, see “Power on the server” on page 74.
Rail replacement
Follow the instructions in this section to remove and install rails.
• “Remove the rails from the rack” on page 75
• “Install the rails to the rack” on page 77
Remove the rails from the rack
Follow the instructions in this section to remove the rails from the rack.
About this task
Attention:
• Read
“Installation Guidelines” on page 57 and “Safety inspection checklist” on page 58 to ensure that you
work safely.
• Power off the server and peripheral devices and disconnect the power cords and all external cables. See
“Power off the server” on page 75.
• Keep static-sensitive parts in their static-protective packages until installation to prevent exposure to
static electricity. Handle the parts with an electrostatic-discharge wrist strap or other grounding systems.
Place the parts on a static-protective surface.
Procedure
Step 1. Remove the server from the rack. See “Remove the server from the rack (friction rails)” on page 82
and “Remove the server from the rack (slide rails)” on page 89.
Step 2. Remove the M6 screws installed on the rear of the rails.
Chapter 5. Hardware replacement procedures 75
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