PCI Backplane
The HP Integrity rx7640 Server supports both PCI X 2.0 and PCI Express. Two different
backplanes are available. The PCI X 2.0 backplane (AB160A) supports sixteen (16) PCI X
slots. A combination PCI Express/PCI X 2.0 backplane (AD161A) supports eight (8) PCI X slots
and eight (8) PCI Express slots. AD161A is not supported as an upgrade to earlier rx7640
models configured with Intel Itanium Mad9M series processors.
Each backplane contains two master I/O controller chips located on the backplane. Each I/O
controller contains sixteen high performance 12 bit wide links, which connect to sixteen slave
I/O controller chips supporting the PCI X or PCI Express card slots and core I/O. Two links, one
from each master controller is routed through the crossbar backplane and is dedicated to core
I/O. The remaining thirty links are divided among the sixteen I/O card slots. This one card per
link architecture leads to greater I/O performance and higher availability. Each controller chip is
also directly linked to a host cell board. This means that at least two cell boards, located in cell
slots 0 and 1, must be purchased in order to access all sixteen I/O card slots. With one cell
board, access to eight slots is enabled.
Eight of sixteen I/O card slots are supported by dual high performance fat links. Each link is
capable of ~2 GB/s of bandwidth. Six of the sixteen I/O card slots are supported by dual high-
performance links. Each link is capable of providing 1060 of bandwidth. This means that half of
HP Integrity rx7640 Server I/O slots are capable of sustained 2.12 GB/s. Aggregate I/O slot
bandwidth is ~23 GB/s. In addition, because each I/O slot has a dedicated bus, any slot can be
"hot plugged" or serviced without affecting other slots. The hot plug operation is very easy, and
can be done with minimal training and effort.
I/O Card Description
Product
Number
Operating Environment
Special Notes
Mass Storage Adaptors
HP-UX
Win
Linux
Open VMS
PCI-X 2-port U320 SCSI
HBA
A7173A
Y Y Y Y
PCI-X 2-port Fiber
Channel 2Gb HBA for
Windows 64-bit (cannot
be factory integrated with
AD167A or AD168A)
AB466A
Y
PCI-X 1-port Fiber
Channel 2Gb HBA for
Windows 64-bit (cannot
be factory integrated with
AD167A or AD168A)
AB467A
Y
PCI-X 266 1-Port Fiber
Channel 4Gb HBA
AB378B
Y Y
PCI-X 266 2-Port Fiber
Channel 4Gb Host Bus
Adapter
AB379B
Y Y Y Y
PCI-X 266 1-Port Fiber
Channel 4Gb Host Bus
Adapter
AB429A
Y Y
PCI-X 1-port Fiber
Channel 4Gb HBA
AD167A
Y Y
PCI-X 2-port Fiber
Channel 4Gb HBA
AD168A
Y Y
QuickSpecs
HP Integrity rx7640 Server
Configuration
DA - 12470 Worldwide QuickSpecs — Version 25 — 5/8/2009
Page 10
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