•N+N design: N power supplies can be provided where N/2 power supplies are capable of sustaining the associated equipment's power demand. For the c7000 enclosure, this quantity is typically a 2+2 or 3+3 power supply configuration.

•N+1 design: Typically four power supplies are provided, requiring at least three to handle the equipment's power demand. If one fails, the other three remain on line with enough capacity to meet the power demand.

Be sure that the wiring and branch circuitry to each installation is suitably rated for the power demand of the connected equipment. To provide additional redundancy, HP recommends routing the power through separate branch circuits, breaker panels, and PDUs.

Non-redundant power

For equipment supplied by a single source of power, connect all components to the same power distribution device (PDU or UPS). The power distribution device should be suitably rated for the connected load. If the total load exceeds the rating of the power distribution device, obtain a suitable rated device or add a second power distribution device and divide the load equally between the devices.

Line voltage selection

All HP products that are optimized for rack mounting have wide-range power supply inputs designed to operate at a voltage range of 100-240V. HP recommends operating rack-optimized equipment with high line voltage (200-240V AC).

Benefits of high line voltage operation include the following:

•Power supplies run more efficiently and waste less power when operating at 200-240V, thus saving electrical power.

•Greater capacity is available in a single rack. For the same size circuit, almost twice the power can be delivered to a rack at high line versus low line. For example, a 115V 30A branch circuit can deliver 2760VA (de-rated) to a rack, while a 208V 30A branch can deliver 4992VA (de-rated) to a rack.

•Some products require 200-240V input power to operate at their full-rated capacity.

•The HP 2400W High Efficiency Power Supply operates only at 200-240V AC and provides significantly higher efficiency than the 2250W power supply.

•Power supplies run cooler at higher input voltages, last longer, and improve overall availability. Also, because they run cooler, they produce less heat which helps to lower cooling costs.

•Keeping input currents lower allows the use of smaller, more standardized power connections.

Distribution hardware

This section describes wire selection and the types of raceways (electrical conduits) used in the distribution system.

Wire selection

Use copper conductors instead of aluminum, because aluminum’s coefficient of expansion differs significantly from that of other metals used in power hardware. Because of this difference, aluminum conductors can cause connector hardware to work loose, overheat, and fail.

Power requirements and considerations 34

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HP xw2x220c Blade manual Distribution hardware, Non-redundant power, Line voltage selection, Wire selection
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xw2x220c Blade specifications

The HP xw2x220c Blade is designed for organizations that require a high-performance, space-efficient computing solution. This blade server epitomizes the commitment to enhancing data center efficiency and maximizing computing power without compromising on reliability.

One of the standout features of the HP xw2x220c Blade is its compact form factor, which enables organizations to fit a substantial amount of computing power in a small footprint. This is particularly beneficial for businesses with limited space, as they can host more servers within the same physical environment. The blade is optimized for virtualization, allowing it to handle multiple workloads simultaneously, which translates to cost savings and better resource utilization.

The server is powered by advanced Intel Xeon processors, ensuring efficient processing capabilities for demanding applications. The HP xw2x220c Blade supports multiple CPU options, allowing organizations to select the configuration that best meets their workload requirements. Leveraging Intel's latest technologies, it offers enhanced performance while maintaining energy efficiency, which is a critical consideration in today’s environmentally conscious technological landscape.

In terms of memory, the xw2x220c Blade supports high-capacity DDR4 RAM, which enhances data access speeds and ensures smooth operation even during heavy loads. The architecture of the blade also includes advanced cooling technology that optimizes airflow to maintain optimal temperatures, thereby prolonging hardware lifespan and reliability.

Network connectivity is a vital feature, and the HP xw2x220c Blade offers multiple Ethernet ports for flexible networking options, as well as support for fibre channel connections. This enables seamless integration into existing network configurations, ensuring high-speed data transfer rates that are crucial for real-time applications.

Security features are also integrated into the HP xw2x220c Blade, including options for secure boot, system integrity verification, and advanced encryption capabilities. These attributes protect sensitive data from unauthorized access and potential breaches, which is essential for organizations dealing with confidential information.

In conclusion, the HP xw2x220c Blade is a formidable choice for businesses seeking a compact, powerful, and efficient computing solution. Its combination of advanced processing capabilities, extensive memory support, flexible networking options, and robust security features makes it well-suited for a variety of applications, making it an essential component for modern data centers.
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