IBM System Storage DS4000, Hardware Maintenance Manual

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Table 24. FAStT500 RAID controller indicator lights (front panel) (continued)
Indicator light Color
Normal
Operation
Problem
Indicator
Possible conditions suggested
by the problem indicator (1)
Controller fan
fault
Amber Off On
v
Controller fan failed
v Fan and communications module is missing,
unplugged, or failed
v
Circuitry failure
v
Overtemperature condition
Controller fault Amber Off On Controller failed; one or more memory modules
failed (SIMMs or DIMMs).
Fast write
cache
Green Steady or
blinking (3)
Software
dependent (3)
Normal operation is off if:
v
Cache is not enabled.
v
Battery is not ready.
Component: battery
Fault-A or
Fault-B
Amber Off On
v
Left or right battery bank failed.
v
Battery is either discharged or defective.
Full Charge-A
or
Full Charge-B
Green On (4) Off
v Left or right battery bank is not fully charged.
v
Power has been off for an extended period and
has drained battery power.
v Batteries are weak.
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 the cache and it 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.
More indicator lights are located on the back of the controller unit, as shown in
Figure 32.
Table 25 on page 50 describes the back panel FAStT500 RAID controller indicator
lights.
Power supply
fault
Power supply
fault
Fan and
communications
module fault
Figure 32. FAStT500 RAID controller indicator lights (back panel)
Chapter 8. Type 3552 FAStT500 RAID Controller
49