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Power Supplies
The power supply cage shown in Figure 8 is accessed from the rear of the chassis. The power
supply cage supports up to two hot-swap power supplies (either AC input or DC input) in a (1+1)
redundant configuration. A power supply filler module (shown at left in Figure 8) for the empty
power supply site is supplied for systems without redundancy.
Only the DC input version is NEBS certified.
Figure 8. Non-redundant AC-Power Supply Subsystem (Filler Module Shown at Left)
DC Power Subsystem
This section defines the features of the DC input switching power subsystem.
Features
•
470-Watt output capability in full DC input voltage range
•
"Power Good" indication LEDs
•
Predictive failure warning
•
Internal cooling fans with multi-speed capability
•
Remote sense of 3.3-Volt, 5-Volt, and 12-Volt DC outputs
•
"DC_OK" circuitry for brown-out protection and recovery
•
Built-in load sharing capability
•
Built-in overloading protection capability
•
Onboard field replaceable unit (FRU) information
•
2
I
C interface for server management functions
•
Integral handle for insertion/extraction
xSeries 343 Product Guide
TP109
25
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