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ProLiant BL20p and p-Class system
DA-11411 Canada — Version 1 — August 26, 2002
5
Standard Features
Compaq ProLiant BL p-Class Server Blade Enclosure and Interconnects
(continued)
BL p-Class Power Distribution
In the ProLiant BL p-Class infrastructure, redundant -48 VDC power (from the power enclosures or facility DC
power) is distributed from the power enclosures to the server blade enclosures through the Compaq bus bar
system. Hinges attach the ProLiant BL bus bars to the rails in a rack. The bus bars swing open from the centre to
enable easy rear access to the server blades and network cables. Power is distributed 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:
• Compaq ProLiant BL p-Class scalable bus bar
• Compaq ProLiant BL p-Class mini bus bar
Note: To support a full 42U rack of BL20p server blades (6 server blade enclosures), two mini bus bars are
needed.
• Compaq ProLiant BL p-Class power bus box
Power Enclosures
Supported
Server Blade Enclosures
Supported
Max. Rack Space
Occupied
Scalable Bus Bar 1 or 2 ≤ 5 36U
Mini Bus Bar 1 ≤ 3 21U
Power Bus Box 1 1 9U
Required Power Source
Two 30amp redundant power feeds per power enclosure
Connectors
–NEMA receptacles
NA 1-phase L6-30, 250v, 30A 3-wire
NA 3-phase L15-30, 250V, 30A, 4-wire
Optimized for power cabling from bottom and network cabling from top
For cabling information, refer to the Compaq Web site at
http://www.compaq.com/products/servers/
Note: This Web site is available in English only.