Power Supply Information Mounting OS6855-14 and OS6855-U10 Switches
page 4-4 OmniSwitch 6855 Series Hardware Users Guide March 2009
Power Supply Information
Before getting started, please note that OmniSwitch 6855 Series power supplies can be installed in a
number of different configurations. For example:
• Basic single system power, which provides minimum power requirements to the chassis, with no power
supply redundancy/failover.
• Redundant system power, which provides minimum power requirements to the chassis as well as
power supply redundancy/failover. Two system power supplies (PS1 and PS2) are required for this
configuration.
• Basic system power with Power over Ethernet (PoE) support (OS6855-14 only). This provides
minimum power requirements to the chassis, as well as minimum power requirements to the
OS6855-14 PoE ports. Two system power supplies—a system power supply (PS1) and a PoE-specific
power supply—(PoE1) are required for this configuration.
• Redundant system power with Power over Ethernet (PoE) support (OS6855-14 only). This provides
system power supply redundancy/failover in addition to PoE power redundancy. Four system power
supplies—two system power supplies (PS1 and PS2) and two PoE-specific power supplies—(PoE1 and
PoE2) are required for this configuration.
Refer to the table below for typical power supply and power supply tray requirements for different
configurations.
Power requirements Power supplies needed Power supply trays needed
Basic power (no redundancy) 1 1
Chassis power redundancy 2 1
Basic power with PoE 2 1
Chassis power redundancy with PoE 4 2
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