IBM DS3950, Installation, User'S, And Maintenance Manual, Page: 132 / 252

Table 15. Front LEDs and controls (continued)
LED Normal Status Problem Status
Global Power On Off
Link Rate Switch Set to the 4 Gbps position. N/A
Battery unit LEDs
This section describes the primary LEDs on the storage subsystem battery units.
Table 16. Battery unit LEDs
LED Normal Status Problem Status
Service Action
Allowed (OK to
Remove) Off On
Service Action
Required (Fault) Off On
Battery Charging Green means on,
ready
flashing green means
charging
Off
The Global Power, Global Summary Fault, and Global Locate LEDs are general
indicators for the entire DS3950 storage subsystem (or configuration, in the case of
the Global Summary Fault). The Global Summary Fault LED turns on if a fault
condition is detected in any component in the storage subsystem configuration,
including all attached storage expansion enclosures. The Global Power, Global
Summary Fault, and Global Locate LEDs shine through the front bezel.
Attention: If the Global Summary Fault LED lights, refer to the DS Storage
Manager client software to determine the problem with the storage subsystem.
Also, inspect the Needs Attention LEDs on the other components in the storage
subsystem to help isolate the fault to a specific component.
Service action
allowed (ok to
remove) LED
Service action
required
(fault) LED Battery
charging
LED
Service action
allowed (ok to
remove) LED Service action
required
(fault) LED Battery
charging
LED
Figure 67. Battery unit LEDs
104
IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide