White Paper

5
Discover the power distribution topology
Our IPD solution works with ProLiant servers with iLO 2 (firmware v2.0 or newer) or iLO 3 (firmware
v1.05 or newer). IPD components include:
An Intelligent Power Distribution Unit (iPDU) with an embedded management module and six
monitored C-19 outlets
One or more Intelligent Extension Bars, each with five monitored C-13 outlets
IPD power cords with embedded RS-232 data lines
HP Common Slot Power Supplies with IPD connectors
When you connect the IPD components as shown in Figure 1, the iPDU automatically detects and
communicates with each server’s iLO device before the server is powered on. The iPDU management
module and the iLO devices exchange identity data—hostname, IP address and serial number—
through the IPD power cords. This allows the iPDU to track the servers plugged into each of its outlets.
Figure 1: Components of the HP Intelligent Power Discovery solution
Monitor real-time power use
The iPDU collects power use data for each individual outlet twice per second. It’s 99% accurate at
1 amp and above, making it one of the most accurate monitored PDUs on the market. The iPDU’s
network connection lets you access this data locally through the HP Intelligent PDU Management GUI
or remotely through Insight Control power management software.
Eliminate human error
IPD is the only solution in the server industry today that automatically correlates server identity to
power outlets. This capability helps prevent personnel from connecting redundant power supplies to
the same circuit, which is a common cause of server failure.
Also, when you need to reset a server by cycling power to it, you must cycle the correct outlet(s) or
you will shut down the wrong server. If the server uses redundant power supplies, you have to cycle
all power supplies simultaneously to prevent boot errors and power supply errors. The iPDU