- IBM switch Users and Maintenance Guide

Table 13. RAID controller LEDs (continued)
Icon LED Color Operating states
1
Expansion
port bypass
Amber
v Off - Normal operation.
v On - One of the following situations has
occurred:
– An SFP module is inserted in the drive
loop port and the fibre-channel cable is
not attached to it.
– The fibre-channel cable is not attached
to an expansion unit.
– The attached expansion unit is not
turned on.
– An SFP has failed, a fibre-channel
cable has failed, or an SFP has failed
on the attached expansion unit.
Expansion
loop
Green
v On - Normal operation.
v Off - The RAID controller circuitry has
failed, or the RAID controller has no
power.
2Gbps Fibre channel
port speed
Green
v On - Normal operation (host connection is
at 2 Gbps)
v Off - Host connection is at 1 Gbps
10BT 10BT Green
v If the Ethernet connection is 10BASE-T:
The 10BT LED is on, 100BT LED flashes
faintly.
v If the Ethernet connection is
100BASE-T: 10BT LED is off, 100BT LED
is on.
v If there is no Ethernet connection - Both
LEDs are off.
100BT 100BT
1
Always use the DS4000 Storage Manager client to identify the failure.
Table 14. Fan LED
LED Color Operating states
1
Fault Amber
v Off - Normal operation.
v On - The fan CRU has failed.
Power supply
fault LEDs
Power LED
Fan fault LED
Fan fault LED
Power LED
f10ug026
Figure 59. Fan and power supply LEDs
74 IBM TotalStorage DS4100 Storage Server: Installation, User’s, and Maintenance Guide