IBM TotalStorage DS4200, Installation, User'S, And Maintenance Manual, Page: 115 / 222

Table 23. Power supply and fan unit LEDs
Number LED Normal Status Problem Status
1 Power supply and fan unit
Power
On Off
2 Service Action Allowed
(OK to Remove)
Off On
3 Service Action Required
(Fault)
Off On
4 Direct Current Enabled On Off
Front LEDs
This section describes the primary LEDs and controls on the front of the storage
subsystem.
Table 24. Front LEDs and controls
Number LED Normal Status Problem Status
1 Drive Activity LED On (not blinking) - No
data is being processed
Blinking - data is being
processed
Off
2 Drive Fault LED Off
Blinking - Drive, volume,
or storage array locate
function
On (not blinking)
3 Global Locate On N/A
4 Global Summary Fault Off On
ds470006
2 3 4 5 6 1 7
Figure 63. Front LEDs and controls
Chapter 4. Operating the storage subsystem
89