HP LH4r HP Netserver LH 6000 Installation Guide - Page 33

Power Supplies, Connecting the HP NetServer to AC Power

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Chapter 2 Controls, Ports, and Indicators Local Area Network (LAN) LEDs The LAN has LEDs on the connector that provide status information about the LAN. Interpret the LAN LEDs as shown in Table 2-5. Table 2-5. Local Area Network LED Status Green LED Yellow LED LAN Status: ON/Flashing ON/Flashing OFF OFF The LAN is connected and data is being transferred at 10Mbps. ON The LAN is connected and data is being transferred at 100Mbps. OFF The LAN is not connected or is not operational (see Chapter 12, "Troubleshooting"). Power Supplies Each NetServer is shipped with three power supply blocks in the standard configuration. An optional fourth power supply block can be added to provide redundancy allowing power supplies to be hot-swapped. Power Supply Status LEDs Each power supply block has one green LED. Interpret the green LEDs on the power supplies as shown in Table 2-6. Table 2-6. Power Supply LED Status Green LED NetServer Status: Steady Green Off The system is powered up. The AC line is unplugged or the power supply has failed (see Chapter 12, "Troubleshooting"). Connecting the HP NetServer to AC Power When you connect the NetServer to an AC power source, the server temporarily draws additional current. This occurs even when the system is in standby mode. This "inrush current" is much greater than the server's normal operating needs. Generally, your external AC power source can handle the inrush current. If you install several HP NetServers on one circuit, precautions are necessary. If there is a power failure and power is then restored, all the servers immediately begin to draw inrush current at the same time. If the circuit breakers on the incoming power line have insufficient capacity, they may trip and thus prevent the servers from powering up. 25

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Chapter 2
Controls, Ports, and Indicators
25
Local Area Network (LAN) LEDs
The LAN has LEDs on the connector that provide status information about the
LAN. Interpret the LAN LEDs as shown in Table 2-5.
Table 2-5. Local Area Network LED Status
Green LED
Yellow LED
LAN Status:
ON/Flashing
OFF
The LAN is connected and data is being
transferred at 10Mbps.
ON/Flashing
ON
The LAN is connected and data is being
transferred at 100Mbps.
OFF
OFF
The LAN is not connected or is not operational
(see Chapter 12, "Troubleshooting").
Power Supplies
Each NetServer is shipped with three power supply blocks in the standard
configuration.
An optional fourth power supply block can be added to provide
redundancy allowing power supplies to be hot-swapped.
Power Supply Status LEDs
Each power supply block has one green LED. Interpret the green LEDs on the
power supplies as shown in Table 2-6.
Table 2-6.
Power Supply LED Status
Green LED
NetServer Status:
Steady Green
The system is powered up.
Off
The AC line is unplugged or the power supply
has failed (see Chapter 12, "Troubleshooting").
Connecting the HP NetServer to AC Power
When you connect the NetServer to an AC power source, the server temporarily
draws additional current. This occurs even when the system is in standby mode.
This "inrush current" is much greater than the server’s normal operating needs.
Generally, your external AC power source can handle the inrush current.
If you install several HP NetServers on one circuit, precautions are necessary. If
there is a power failure and power is then restored, all the servers immediately
begin to draw inrush current at the same time. If the circuit breakers on the
incoming power line have insufficient capacity, they may trip and thus prevent the
servers from powering up.