Light Path Diagnostics Panel - IBM System x3530 M4 Product Manual

In the default UEFI configuration, Ethernet port 2 is configured to be dedicated to remote access to the
IMM2. If preferred, you can change the UEFI setting so that remote access to the IMM2 is via Port 1 and
also accessible to the operating system. This setting is also useful if you do not have a dedicated
management network. The following table shows this setting and its effect on the Ethernet ports.
Note: The IMM2 network must operate 100 Mbps full duplex. The IMM2 network connection does not
support Gigabit Ethernet. In shared mode, the production Ethernet network on that port still operates at
Gigabit speeds.
Table 20. UEFI settings for remote access to the IMM
UEFI mode
IMM network interface port
dedicated (default)
IMM network interface port
shared
* The IMM network is limited to 100 Mbps full duplex

Light path diagnostics panel

The light path diagnostics panel allows system engineers and administrators to easily and quickly
diagnose hardware problems on IBM System x servers. If a failure occurs, a light is illuminated on the
front panel of the server (level 1 light path) to alert the systems administrator that there is a problem. The
light path diagnostics panel (light path level 2) will have a light next to the LED for the failed subsystem.
This light directs the engineer or administrator to the failed component, also shows an illuminated LED
near it (light path level 3) (for example, the DIMM error LED on the system board).
x3530 M4 offers two variants of light path diagnostics: basic and advanced. All standard x3530 M4
models include basic functionality that provides light path levels 1 and 3. Advanced functionality is
optional; it contains a pop-out panel that adds light path level 2.
The following figures show the basic (level 1) and advanced (level 2) light path levels.
Figure 8. Basic (level 1) light path
IBM System x3530 M4 (E5-2400)
Ethernet Port 1
Production Ethernet
Shared - Production Gb
Ethernet and IMM2*
Ethernet Ethernet Port 3
Port 2 (optional)
IMM2 Production
dedicated* Ethernet
Production Production
Ethernet Ethernet
Ethernet Port 4
(optional)
Production
Ethernet
Production
Ethernet
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