HP 275 manual Standard Features Power System and Rack Information, With 3U power

QuickSpecs

HP ProLiant BL25p Server Blade

Standard Features (Power System and Rack Information)

HP BladeSystem	NOTE: To determine power configuration please refer to the HP BladeSystem p-Class Overview and
p-Class Power System	Planning Whitepaper and sizing tool at http://h18000.www1.hp.com/products/servers/proliant-bl/p-
and Rack Information	class/20p/index.html.

HP BladeSystem

p-Class 3U Power

Enclosure

3U (5.25-inch), 19-inch wide, 29-inch deep (0.48-meter wide, 0.74-meter deep), Dual input single phase and three phase models available.

HP BladeSystem p-Class 3U power enclosure provides external, shared hot-plug power. Each three- phase power enclosure houses up to six hot-plug power supplies each single-phase power enclosures hold up to four hot-plug power supplies to power the BL p-Class server blades and interconnects Please use the sizing utility to determine the power needed for each configuration http://www.hp.com/go/bladesystem/powercalculator.

Power enclosures and power supplies are not needed if using facility DC (-48V DC ± 10%). If using facility DC, only Facility DC Power Connection kit part number (240563-B21) is needed.

HP BladeSystem

p-Class 1U Power

Enclosure

1U (1.75-inch), 19-inch wide, 29-inch deep (0.48-meter wide, 0.74-meter deep), Multi-input single phase or three phase operation.

HP BladeSystem p-Class 1U power enclosure provides external, hot-plug power. Each 1U power enclosure houses up to six hot-plug power supplies to power up to one server blade enclosure, fully populated with BL p-Class server blades and interconnects.

Please use the sizing utility to determine the power needed for each configuration http://www.hp.com/go/bladesystem/powercalculator.

NOTE: Power enclosures and power supplies are not needed if using facility DC (-48V DC ± 10%). If using facility DC, only Facility DC Power Connection kit part number (240563-B21) is needed.

HP BladeSystem	In the HP BladeSystem p-Class infrastructure, redundant -48 VDC power (from the power enclosures or
p-Class Power	facility DC power) is distributed from the power enclosures to the server blade enclosures through the bus

Distribution (only required bar system. Hinges attach the HP BladeSystem bus bars to the rails in a rack. The bus bars swing open

with 3U power	from the center to enable easy rear access to the server blades and network cables. Power is distributed
enclosures)	redundantly through independent A- and B-sided bus bars.
	Three different power distribution solutions are available depending on the maximum number of server
	blade enclosures planned for the rack:
	HP BladeSystem p-Class scalable bus bar
	HP BladeSystem p-Class mini bus bar
	HP BladeSystem p-Class power bus box
	NOTE: To support a full 42U rack of HP ProLiant BL25p server blades (6 server blade enclosures), two
	mini bus bars are needed.

DA - 12160 North America — Version 7 — June 27, 2005 Page 13