Chapter 7. IBM System x3690 X5 333
Figure 7-31 IMM System Status with a hard drive failure
Virtual light path diagnostics
It is easy to pinpoint a hardware fault when standing in front of the server, by noticing the first
tier of light path diagnostics, with the error light on the front of the operator panel and on the
rear of the server.
Pulling out the front operator panel reveals the second tier of light path diagnostics, as shown
in Figure 7-32, that indicates the hardware subsystem that is experiencing the error.
Figure 7-32 Tier 2 of light path diagnostics