Server Power Features; Turning On The Server - IBM eServer xSeries 225 Type 8647 Installation Manual

Ethernet transmit/receive activity LED
Hard disk drive activity LED
Hot-swap hard disk drive activity LED
Hot-swap hard disk drive status LED
Power-control button
Power-on LED
System-error LED

Server power features

When the server is connected to an ac power source but is not turned on, the
operating system does not run, and all core logic is shut down; however, the server
can respond to remote requests to turn on the server. The power-on LED flashes to
indicate that the server is connected to an ac power source but is not turned on
(standby mode).

Turning on the server

Notes:
1. Turn on all external devices, such as the monitor, before turning on the server.
2. The power-on LED on the front of the server is lit when the server is on and
3. You can install a circular disk over the power-control button to prevent
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IBM xSeries 225 Type 8647: Installation Guide
This LED is on the Ethernet connector on the back of the server. When this
LED is lit, it indicates that there is activity between the server and the
network.
When this LED is flashing, it indicates that a hard disk drive is in use.
On some server models, each hot-swap drive has a hard disk drive activity
LED. When this green LED is flashing, it indicates that the drive is in use.
On some server models, each hot-swap drive has a hard disk drive status
LED. When this amber LED is lit, it indicates that the drive has failed. If an
optional IBM ServeRAID controller is installed in the server, when the LED
flashes slowly (one flash per second), the drive is being rebuilt. When the
LED flashes rapidly (three flashes per second), the controller is identifying
the drive.
Press this button to turn the server on and off manually. A
power-control-button shield comes with your server. You can install this
disk-shaped shield to prevent the server from being turned off accidentally.
When this LED is lit and not flashing, it indicates that the server is turned
on. When this LED is flashing, it indicates that the server is off and still
connected to an ac power source (standby mode).
When this LED is lit, it indicates that a system error has occurred. An LED
on the system board might also be lit to help isolate the error. See
Chapter 6, "Solving problems" on page 53 for additional information.
Detailed troubleshooting information is in the Hardware Maintenance
Manual and Troubleshooting Guide on the IBM xSeries Documentation CD.
while it is powering-up.
accidental manual power-off. This disk, known as the power-control button
shield, comes with your server.