Power Supply Cooling; Load Sharing - Cisco SCE8000 GBE Installation And Configuration Manual

The Cisco SCE8000 GBE Optical Bypass
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The AC-input and DC-input power supplies support redundancy. When power is removed from one
supply, the redundant power feature causes the second supply to produce full power.

Power Supply Cooling

Power supplies have built-in fans and are completely self-cooling. Air enters from the right of the fan
and exits through the left.

Load Sharing

With two power supplies, each power supply concurrently provides approximately half of the required
power to the system. If one power supply fails, the second power supply immediately assumes full power
to maintain uninterrupted system operation. The second power supply enables load sharing and fault
tolerance automatically; no software configuration
Cisco SCE8000 GBE Installation and Configuration Guide
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Introduction to the Cisco SCE8000 GBE Platform
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