HP rx5670 - Manual (Page 7)

I/O Architecture I/O Architecture I/O Architecture I/O Architecture
The HP Integrity rx5670 I/O architecture utilizes industry standard PCI X and PCI buses in a unique design for maximum performance, scalability and
reliability.
The HP Integrity rx5670 architecture uses eight high speed I/O channels. Each channel provides 0.5 GB/s of sustained I/O throughput. The diagram above
shows how these channels are used to provide bandwidth to the ten available PCI X and PCI slots as well as to the multifunction core I/O. Note that the
rx5670 backplane has twelve I/O slots, however slots #1 and #3 (counting from the bottom) will always be filled with core I/O. Slot #2 will come factory
loaded with a graphics and USB card if the HP Integrity rx5670 is ordered with the Windows operating system. The VGA/USB card is optional for systems
ordered with HP UX or Linux.
The three slots at the top of the backplane (#10, 11, and 12) all have their own dedicated 64 bit 133 MHz PCI X bus and their own independent 0.5 GB/s
I/O channel. The highest performing I/O cards should be placed in these three slots. The independent channels provide improved I/O performance and
error containment. Independence protects each I/O card from bus hangs or extended latencies due to the failure or high bandwidth demands of other I/O
cards. Independence also ensures that each I/O card can achieve maximum throughput.
The next six slots (4 through 9) share three 64 bit 66 MHz PCI X buses, with two slots allocated to each bus. Each pair of slots shares a 0.5 GB/s I/O
channel. If a 33 MHz card shares a bus with a 66 MHz card, the faster card will downgrade to 33 MHz.
Slot #3 is loaded with a Gigabit LAN/U160 SCSI core I/O card. Every rx5670 contains this card. A dedicated 64 bit 133 MHz PCI X bus and a dedicated
0.5 GB/s I/O channel serve this slot.
Slots #1 and #2 are also used for core I/O. Slot #1 always contains the Management Processor/U160 SCSI core I/O card. Slot #2 will be loaded with the
graphics and USB card if a Windows operating system is ordered. Slot #2 is open if HP UX or Linux is ordered. The graphics and USB card is available as an
option with HP UX and Linux, and it should always be placed in slot #1. If the graphics and USB card is not used, slot #1 can be used for other PCI I/O
cards. Slot #1 always runs at 33 MHz.
All I/O slots are keyed for 3.3V I/O cards. 5V cards are not supported in the HP Integrity rx5670.
Number of Number of Number of Number of
Slots Slots Slots Slots
Bandwidth Per Slot Bandwidth Per Slot Bandwidth Per Slot Bandwidth Per Slot Bus Width Bus Width Bus Width Bus Width Bus Speed Bus Speed Bus Speed Bus Speed Slot Keying Slot Keying Slot Keying Slot Keying
Dedicated Dedicated Dedicated Dedicated 3 0.5 GB/s 64 bits 133 MHz, 66 MHz or 33 MHz 3.3 Volts
Shared Shared Shared Shared 6 0.5 GB/s per pair of slots (three
pairs)
64 bits 66 MHz or 33 MHz 3.3 Volts
LAN/SCSI Core LAN/SCSI Core LAN/SCSI Core LAN/SCSI Core 1 0.5 GB/s 64 bits 133 MHz 3.3 Volts
Management/SCSI Core Management/SCSI Core Management/SCSI Core Management/SCSI Core 1 0.5 GB/s shared with VGA/USB 64 bits 33 MHz 3.3 Volts
VGA/USB VGA/USB VGA/USB VGA/USB 1 1 1 1 1 512 MB/s shared with
Management/SCSI Core
64 bits 33 MHz 3.3 Volts
QuickSpecs
HP Integrity rx5670 Server HP Integrity rx5670 Server HP Integrity rx5670 Server HP Integrity rx5670 Server
Configuration
DA - 11719 Worldwide — Version 6 — July 2, 2004 Page 7