96 EMC VNX8000 Hardware Information Guide
Disk-array enclosures
Figure 76 Example a 3U, 120 (2.5-inch) DAE (front view) showing the SSC fault (see location A) and
DAE fault (see location B) LEDs (amber) and the DAE power LED (blue)
Fan module (cooling module)
Five of the ten fan modules (cooling modules) of the 3U, 120 (2.5-inch) DAE are located
(Figure 76) on the front. Cooling is provided by these front fan modules and the five fan
modules located in the mid-section of the DAE (Figure 88 on page 107). All of the fan
modules are installed or removed with the DAE pulled out of the cabinet (for information
about how to install or remove the fan module, go to “Access to disk drives and fan
modules (cooling modules)” on page 106). For a closer look of a fan module, go to “Fan
module (cooling module)” on page 109.
System status card
The system status card (SSC) is a removable circuit board located on the bottom, front of
the 3U, 120 DAE and provides the following functionality (Figure 76 on page 96):
◆ Three status LEDs (Table 41 on page 97)
• SSC fault LED
•Enclosure fault LED
• Enclosure power LED
◆ Fan voltage of 12 VDC is provided to two fans; fan 0 located in the front of the DAE and
fan 7 located in the mid-section of the DAE; this maintains proper cooling,
◆ An inlet temperature sensor that determines the ambient temperature outside the
enclosure
◆ SSC resume EEPROM for tracking manufacturing information
AB
DAE power LED
Fault LEDs
Fan module (5 places)
System status card
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