IBM System Storage DS4000, Hardware Maintenance Manual, Page: 70 / 184

Storage server LEDs (rear)
Table 20. FAStT200 and FAStT200 HA storage server RAID controller LEDs
Icon LED Color Operating states
1
Fault Amber
v
Off - Normal operation
v
On - The RAID controller failed.
Host loop Green
v On
- Normal operation
v
Off - One of the following situations has occurred:
– The host loop is down, not turned on, or not connected.
– A GBIC failed, or the host port is not occupied.
– The RAID controller circuitry failed, or the RAID controller
has no power.
Cache active Green
v On - There is data in the RAID controller cache.
v Off - One of the following situations has occurred:
– There is no data in cache.
– There are no cache options selected for this array.
– The cache memory failed, or the battery failed.
+
Battery Green
v On - Normal operation
v Flashing - The battery is recharging or performing a self-test.
v
Off - The battery or battery charger failed.
Expansion port
bypass
Amber
v Off - Normal operation
v On - One of the following situations has occurred:
– The expansion port is not occupied.
– The fibre channel cable is not attached to an expansion unit.
– The attached expansion unit is not turned on.
– A GBIC failed, a fibre channel cable failed, or a GBIC failed
on the attached expansion unit.
Expansion loop Green
v On - Normal operation
v Off - The RAID controller circuitry failed, or the RAID
controller has no power.
Fault
Host loop
10BT 100BT Battery Expansion loop
Expansion port bypass
Cache active
Controller
Fault
10BT 100BT FC-Host
FC-Expansion
Figure 28. FAStT200 and FAStT200 HA storage server LEDs (rear)
42
IBM TotalStorage DS4000: Hardware Maintenance Manual