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Power Connections, the 24A and 32A Control Units with four

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Cabling Rules for LC Clusters Power Connections-The factory distributes the power connections across the PDUs in the LC cluster to avoid overload conditions. The most common PDUs used in the LC clusters are the 24A and 32A Control Units with four, eight-receptacle Extension Bars. Using these PDUs, the factory will not connect more than five components to an Extension Bar and no more than 14 total components to each PDU. Different population rules may apply to different capacity PDUs. Even though the base PDUs can support four, eight-receptacle Extension Bars, the LC clusters might not ship with all the Extension Bars if they are not used. Overload conditions could result from using unused Extension Bars. HP High Performance Clusters LC 2000 Series Cabling Guide A-3

Section	Page
HP High Performance Clusters LC 2000 Series Cabling Guide	1
Notice	2
Contents	3
About This Guide	5
Audience Assumptions	5
Where to Go for Additional Help	5
Technical Support	5
Chapter 1: Server and Switch Connections	6
Server Connections	6
Switch Connections	7
Chapter 2: 16 Node Myrinet Expandable to 32 Nodes	10
Rack Diagram	11
Point-to-Point Cabling Guide	12
Chapter 3: 16 Node GigE Expandable to 22 Nodes	14
Rack Diagram	15
Point-to-Point Cabling Guide	16
Chapter 4: 16 Node Fast Ethernet Expandable to 22 Nodes	18
Rack Diagram	19
Point-to-Point Cabling Guide	20
Chapter 5: 24 Node Myrinet Expandable to 32 Nodes	22
Rack Diagram	23
Point-to-Point Cabling Guide	24
Chapter 6: 24 Node GigE Expandable to 36 Nodes	26
Rack Diagram	27
Point-to-Point Cabling Guide	28
Chapter 7: 24 Node Fast Ethernet Expandable to 36 Nodes	30
Rack Diagram	31
Point-to-Point Cabling Guide	32
Chapter 8: 32 Node Myrinet Expandable to 64 Nodes	34
Rack Diagram	35
Point-to-Point Cabling Guide	36
Chapter 9: 32 Node GigE Expandable to 64 Nodes	40
Rack Diagram	41
Point-to-Point Cabling Guide	42
Chapter 10: 32 Node Fast Ethernet Expandable to 72 Nodes	46
Rack Diagram	47
Point-to-Point Cabling Guide	48
Chapter 11: 64 Node Myrinet Expandable to 128 Nodes	52
Rack Diagram	53
Point-to-Point Cabling Guide	54
Chapter 12: 64 Node GigE Expandable to 128 Nodes	60
Rack Diagram	61
Point-to-Point Cabling Guide	62
Chapter 13: 64 Node Fast Ethernet Expandable to 192 Nodes	68
Rack Diagram	69
Point-to-Point Cabling Guide	70
Appendix A: Cabling Rules for LC Clusters	78
Numbering and Cable Labeling Rules	78

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Cabling Rules for LC Clusters

HP High Performance Clusters LC 2000 Series Cabling Guide

A-3

Power Connections

—The factory distributes the power connections across the PDUs in the

LC cluster to avoid overload conditions. The most common PDUs used in the LC clusters are

the 24A and 32A Control Units with four, eight-receptacle Extension Bars. Using these

PDUs, the factory will not connect more than five components to an Extension Bar and no

more than 14 total components to each PDU. Different population rules may apply to

different capacity PDUs.

Even though the base PDUs can support four, eight-receptacle Extension Bars, the LC

clusters might not ship with all the Extension Bars if they are not used. Overload conditions

could result from using unused Extension Bars.