Figure 10. Controller Unit Indicator Lights - Back View - IBM Netfinity FASt T500 User Reference

Indicator
Color
light
Fault-A or Amber
Fault-B
Full Charge-A Green
or
Full Charge-B
1
Always use the storage-management software to identify the failure.
2
There are eight status lights (the Heartbeat and seven others) that glow in various patterns, depending
on the controller status.
3
The fast write cache indicator light is on when there is data in cache and blinks during a fast write
operation.
4
If either Full Charge-A or Full Charge-B indicator light blink, the battery is in the process of charging.
The indicator lights on the back of the controller unit are shown in
described in Table
Power supply fault
18 IBM Netfinity FAStT500 RAID Controller Enclosure Unit User's Reference
Table 2: Indicator lights (front)
Normal Problem
operation indicator
Component: battery
Off On
4
On Off
3.
Fan and communications
module fault
Figure 10. Controller unit indicator lights — back view
Possible conditions indicated by the
problem indicator
•
Left or right battery bank has failed
•
Battery is either discharged or defective
•
Left or right battery bank is not fully charged
•
Power has been off for an extended period and
has drained battery power
•
Batteries are weak
Power supply fault
1
Figure 10 and are