Table 5–1 PCM LEDs

PCM LEDs

Normal Operation LEDs

Faults LEDs

Enclosure Audible Alarm

 

AC Input

Off

GREEN

off

 

FAILURE

 

 

 

 

 

 

Off

GREEN

DC Output

off

 

FAILURE

 

 

 

 

 

 

Off

OFF

Fan Fault /

AMBER

 

Power Supply

 

 

Fault

 

Off

OFF

ID

BLUE

5.3.2Input/Output (I/O) Module

The drive enclosure storage subsystem includes an enclosure with rear facing bays which house two (2) I/O modules (Figure 5–5).Processors housed on the I/O modules provide enclosure management and interface to devices on the Backplane, PCM, and Display Panel in order to monitor internal functions.

The plug-in I/O modules have been designed for integration into a drive enclosure storage subsystem, providing external SAS cable interfacing with up to 60 SAS or SATA disk drives.

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APC 15000 RAID manual Input/Output I/O Module