IBM Netfinity FAStT500, Installation Manual

Page: 63 / 83

Chapter 3. Starting the controller unit 47
The mini-hub indicator lights on the back of the controller unit are shown in the following
figure and described in
Table 2 .
Figure 33. Mini-hub indicator lights
The following table describes the mini-hub indicator lights.
Table 2: Mini-hub indicator lights
Icon Indicator light Color
Normal
operation
Problem
indicator
Condition indicated
Fault Amber Off On There is a fault in the mini-hub.
Bypass
(upper port) Amber Off On The upper mini-hub port is
bypassed.
Note: If the port is unoccupied,
the light is on.
Loop good Green On Off The drive loop is operational.
Bypass
(lower port) Amber Off On The lower mini-hub port is
bypassed.
Note: If the port is unoccupied,
the light is on.
OUT
IN
Mini-hub indicator
lights
Fault
Bypass
(upper port)
Loop good
Bypass
(lower port)