Removal and Replacement Procedures
Performance Balancing
Before replacing the expansion board, review the following recommendations.
Balancing is the paired arrangement of expansion boards for optimal performance based on
the bus architecture of the expansion slots. Properly balancing the boards across buses can
improve performance. To balance expansion boards:
•
•
Populate slots from the center of the server to ensure optimal thermal conditions. Slot 6 is
in the center of the server and has the best cooling.
Populate slots across different buses before populating two slots on the same bus.
Table 2-10 provides a guideline for slot population order based on the previous
recommendations.
NOTE: HP recommends that the optional Remote Insight Lights-Out Edition II (RILOE II) board be
populated in slot 1 due to internal cabling requirements.
NOTE: The slot population order that follows is a recommendation only; any PCI or PCI-X expansion
board may reside in any slot.
Table 2-10: Recommended PCI-X Expansion Slot Population Order
Slot Number Population Order
6 1
5 4
Shared PCI-X bus 2
4 2
3 5
Shared PCI-X bus 6
2 3
1 6
Shared PCI-X bus 10
The system BIOS detects the PCI-X devices in the slots in this order:
5-6-3-4-1-2
For more information about PCI-X bus architecture and numbering, refer to the white paper,
PCI Bus Numbering in a Windows NT Environment, on the product website at
www.hp.com.
HP ProLiant DL580 Generation 2 Server Maintenance and Service Guide 2-39
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