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3–2
Model 2100 and 2200 Ultra SCSI Controller Enclosures User Guide
Configuration
The EMU is not required for enclosure operation. However, some loss of features
(monitoring) and functionality (disk isolation) occurs without an EMU installed.
Functionality
Table 3–1 lists functions monitored by the EMU.
Rack
Enclosure
EMU
Fan
Power supply
Table 3–1 EMU Monitored Functions
Element
Function Monitored
Power faults
Intake air temperature
System configuration and current status
Installation
Fan speed
Fan fail
Installation
AC input power failure
+5 VDC backplane voltage
+12 VDC backplane voltage
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