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.
Table 3–1 EMU Monitored Functions
Element
Function Monitored
Rack
Power faults
Enclosure
■
Intake air temperature
EMU
■
System configuration and current status
Fan
■
Installation
■
Fan speed
■
Fan fail
Power supply
■
Installation
■
AC input power failure
■
+5 VDC backplane voltage
■
+12 VDC backplane voltage