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61200290L1-1G 8-1
SECTION 8, POWER LOSS RECOVERY
Section 8
Power Loss Recovery
1. INTRODUCTION
The MX2800 provides backup measures of protection for both power supply and power source failure. The
following subsections describe the possible modes of operation:
• Nonredundant Power Mode on page 8-1 offers no backup protection
• Power Supply Recovery Mode on page 8-2 furnishes backup protection in the event of power supply
card failure
• Power Supply and Source Recovery Mode on page 8-2 provides a backup system for both card and
source failure
• Battery Backup Mode on page 8-3 offers battery backup in the event of a power outage
2. NONREDUNDANT POWER MODE
In Nonredundant Power Mode, the MX2800 houses only one power supply card; and only one power
source is available. There is no power failure protection. If a power supply card fails, the unit is down until
the card is repaired or replaced. See Figure 8-1 for an illustration.
Figure 8-1. Nonredundant Power Mode
MX2800