61200290L1-1G 8-1S ECTION 8, P OWER L OSS RECOVERYSection 8Power Loss Recovery1. INTRODUCTIONThe MX2800 provides backup measures of protection for both power supply and power source failure. Thefollowing 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 supplycard failure• Power Supply and Source Recovery Mode on page 8-2 provides a backup system for both card andsource failure• Battery Backup Mode on page 8-3 offers battery backup in the event of a power outage2. NONREDUNDANT POWER MODEIn Nonredundant Power Mode, the MX2800 houses only one power supply card; and only one powersource is available. There is no power failure protection. If a power supply card fails, the unit is down untilthe card is repaired or replaced. See Figure 8-1 for an illustration.Figure 8-1. Nonredundant Power ModeMX2800
