Suggested Use
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•
Use PCI-X mode as opposed to PCI mode. The primary PCI-X bus running at 133MHz
PCI-X with 64-bit bus width will yield the best results and the performance comparable
to that shown in this paper. HP tested the A9782A and A9784A adapters in PCI mode,
but because PCI performance is lower than PCI-X performance, HP recommends using
these adapters in PCI-X mode rather than PCI. In the system under test, the PCI-X slots
are the slots located in the rp8400 Server Expansion Unit (SEU) not the base rp8400
system. See “Test Details: Test Configuration” for more details on the PCI-X slots of the
rp8400 SEU. Please see your sytems’ documentation for the location of the PCI-X slots in
your systems.
• On an rp8400 Server with Server Expansion Unit (SEU), configure each cell in the SEU
with a multiple of 8 equal capacity dual inline memory modules (DIMMs) to take
advantage of memory interleaving. Distribute the 8 DIMMs evenly across the system’s
two busses.
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