
Table   | I/O LEDs  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | |
REAR Enclosure  | Green  | SAS Link  | ON when a valid link is present on any of  | |
  | 
  | 
  | Activity  | the 4 links of the   | 
  | 
  | 
  | 
  | OFF when none of the 4 links of the 4-  | 
  | 
  | 
  | 
  | wide port have a valid connection.  | 
  | 
  | 
  | 
  | |
REAR Enclosure  | Amber  | SAS Link Fault  | ON when a fault is present on any of the 4  | |
  | 
  | 
  | 
  | links of the   | 
  | 
  | 
  | 
  | OFF when none of the 4 links of the 4-  | 
  | 
  | 
  | 
  | wide port have a fault.  | 
  | 
  | 
  | 
  | 
  | 
8.3.5Front Panel Drive Activity Indicators
The Front Panel Drive Activity Indicators show the aggregated status of all the modules. This panel and its associated LEDs are shown in Figure 
Figure  | 
  | ||||
Table   | Display Panel LEDs | 
  | 
  | 
  | |
  | 
  | 
  | 
  | 
  | 
  | 
ICON  | 
  | LABEL  | COLOR  | Definition | Normal Behavior | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Shelf Identify | BLUE  | enclosureIdentity  | |
  | 
  | 
  | 
  | 
  | command.  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | 
  | identity command  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | System Fault | AMBER  | Enclosure Fault  | |
  | 
  | 
  | 
  | 
  | within enclosure have failed. A  | 
  | 
  | 
  | 
  | 
  | service action is required. Exact  | 
  | 
  | 
  | 
  | 
  | failed component has its own  | 
  | 
  | 
  | 
  | 
  | amber fault LED lit.  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | System Power | GREEN  | Enclosure  | ON - DC power is present  | 
  | 
  | 
  | 
  | Powered ON  | OFF - DC power is NOT present  | 
  | 
  | 
  | 
  | 
  | LED does NOT flash under  | 
  | 
  | 
  | 
  | 
  | normal operating conditions.  | 
  | 
  | 
  | 
  | 
  | 
  | 
120  | 
 |