ISS Technology Update, Volume 8, Number 3

ISS Technology Update Volume 8, Number 3

For more information

For additional information, refer to the resources listed below.

Three-phase power distribution in c7000 enclosures

The HP BladeSystem c7000 Enclosure is available in models that use either 3-phase or single phase power to the enclosure.

Enclosures that use 3-phase power can provide several advantages:

• More efficient power distribution. Delivering higher voltage 3-phase power to the enclosure results in less power loss during

the transmission process.

• Elimination of PDUs. The AC Input Module of a 3-phase c7000 enclosure hooks directly to 3-phase power.

• Simpler wiring. Enclosures that use 3-phase power require only two cords connecting to the enclosure to support six modular

power supplies rather than six cords coming from a PDU.

Distributing 3-phase power to the enclosure

There are two 3-phase feeds for the c7000 enclosure. They are marked on the input module as A and B, respectively. Feed A

supplies power supplies 1, 2, and 3 while feed B supplies power supplies 4, 5, and 6.

As with all ProLiant servers that use AC power, the power supplies themselves use single phase current. Figure 2-1 illustrates

that with the 3-phase c7000 enclosure, each power supply is connected to a single phase of the 208V (North America) or

230V (International) 3-phase feed.

Resource description Web address

I/O Virtualization and Sharing

http://www.pcisig.com/developers/main/training_materials/get_document

?doc_id=0cd682cb65b452d00e2047287b48369fc0d9bfa6

HP Virtual Connect Technology

http://h18004.www1.hp.com/products/blades/virtualconnect/index.html

HP Flex-10 Technology

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c016089

22/c01608922.pdf

Flex-10 VC Ethernet Module

http://h18004.www1.hp.com/products/blades/components/ethernet/10-

10gb-f/index.html

HP NC532m Dual Port Flex-10 10GbE

http://h18004.www1.hp.com/products/servers/networking/nc532m/inde

x.html?jumpid=reg_R1002_USEN

Implementing PCI I/O Virtualization

Standards

http://download.microsoft.com/download/a/f/d/afdfd50d-6eb9-425e-

84e1-b4085a80e34e/SYS-T311_WH07.pptx

10 Gigabit Ethernet technology for industry-

standard servers, 2nd edition

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01608915/c0

1608915.pdf