v
Optional DVD drive activity LED:
When this LED is lit, it indicates that the
optional DVD drive is in use.
v
Hot-swap hard disk drive activity LEDs (some models):
This LED is used on
SAS or SATA hard disk drives. Each hot-swap hard disk drive has an activity
LED, and when this LED is flashing, it indicates that the drive is in use.
v
Hot-swap hard disk drive status LEDs (some models):
This LED is used on
SAS or SATA hard disk drives. When this LED is lit, it indicates that the drive has
failed. If an optional IBM ServeRAID controller is installed in the server, when this
LED is flashing slowly (one flash per second), it indicates that the drive is being
rebuilt. When the LED is flashing rapidly (three flashes per second), it indicates
that the controller is identifying the drive.
Rear view
The following illustration shows the LEDs and connectors on the rear of the server.
Note:
The illustrations in this document might differ slightly from your hardware.
Power-cord
connector
USB 1-2 connector
USB 3-4 connector
Serial
connector
Video
connector
Ethernet 1
activity LED
Ethernet 1
link LED
Ethernet 2
activity LED
Ethernet 2
link LED
NMI button
PCI slot 1
PCI slot 2
AC Power LED
(green)
DC Power LED
(green)
Power supply
error LED
(amber)
v
Ethernet link LEDs:
When these LEDs are lit, they indicate that there is an
active link connection on the 10BASE-T, 100BASE-TX, or 1000BASE-TX
interface for the Ethernet port.
v
Ethernet activity LEDs:
When these LEDs are lit, they indicate that there is
activity between the server and the network.
v
AC power LED (some models):
This LED is used on power supply with Active
Energy Manager (AEM). This green LED provides status information about the
power supply. During typical operation, both the ac and dc power LEDs are lit.
For any other combination of LEDs, see the
Problem Determination and Service
Guide
on the IBM
System x Documentation
CD.
v
DC power LED (some models):
This LED is use on power supply with AEM.
This green LED provides status information about the power supply. During
typical operation, both the ac and dc power LEDs are lit. For any other
combination of LEDs, see the
Problem Determination and Service Guide
on the
IBM
System x Documentation
CD.
v
Power-error (!) LED (some models):
This LED is use on power supply with
AEM. When this amber LED is lit, it indicates that the power supply has failed.
For any other combination of LEDs, see the
Problem Determination and Service
Guide
on the IBM
System x Documentation
CD.
v
Power cord connector:
Connect the power cord to this connector.
v
Video connector:
Connect a monitor to this connector.
Chapter 1. The System x3250 M3 server
15
Summary of Contents for 4251
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