HP ProLiant DL380 - Input Power Budget Allocation; Power Distribution Units

HP ProLiant DL380 Generation 3 Server High-Density Deployment
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Input Power
Budget Allocation
This section explains how to allocate the input power budget for each server. This method can be
used when a PDU supports a known number of servers. It is important to verify that the calculated
power budget allocation will be sufficient to support the worst-case server configurations that are to
be deployed.
The allocated input power for each server is calculated by multiplying the allocated input current for
each server by the line voltage.
Allocated Input Power = Allocated Input Current * Input Line Voltage
Example
Assume a high-voltage PDU rated at 24 A is to support 12 servers. Each server can be allocated
2.0 A. If the line voltage is assumed to be at 240 V, then the allocated input power budget for each
server will be (2.0*240) = 480 W.
Since the input power budget of 480 W satisfies the fully configured system measured input power
of 458 W (as shown in Table 5), 12 servers may be supported by a 24 A high-voltage PDU.
Power Distribution
Units
HP offers a wide range of 1U/0U PDUs, supporting both low-voltage and high-voltage applications.
Designed for high-volume rack deployments, HP PDUs help with cable management and power
distribution within the rack. These PDUs are equipped with circuit breakers to provide short circuit
and over current protection.
The Modular PDUs (mPDUs) range from 16A to 40A and provide up to 32 outlets, easy accessibility,
and improved cable management. These mPDUs have a unique modular architecture, allowing
increased flexibility and customization. All mounting hardware, including both the 0U and 1U
mounting brackets, is included in the Modular PDU kit.
Additionally, HP offers the Dual Input PDU, a fault-tolerant solution that automatically switches to a
secondary input source when the first source fails. Equipped with two input ends and a built-in AC
transfer switch, this device is designed for mission critical environments where customers depend on
the reliability of redundant power systems housed in their facility. The Dual Input PDUs ship with both
0U and 1U mounting brackets (no additional mounting brackets need to be purchased).
For more information, refer to Table 8 or http://www.hp.com/products/ups
.