HP Integrity rx8640 Site Preparation Guide, Fourth Edition - HP Integrity rx86 - Page 23

System Backplane

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Table 1-4 Removable Media Drive Path Removable Media Slot 0 media Path 0/0/0/2/1.x1.0 Slot 1 media 1/0/0/2/1.x1.0 1 X equals 2 for a DVD drive while X equals 3 for a DDS-4 DAT drive. Table 1-5 Hard Disk Drive Path Hard Drive Slot 0 drive Slot 1 drive Slot 2 drive Slot 3 drive Path 0/0/0/2/0.6.0 0/0/0/3/0.6.0 1/0/0/2/0.6.0 1/0/0/3/0.6.0 System Backplane The system backplane board contains the following components: • Two crossbar chips (XBC) • Clock generation logic • Preset generation logic • Power regulators • Two local bus adapter (LBA) chips that create internal PCI buses for communicating with the core I/O card. The backplane also contains connectors for attaching the cell boards, PCI-X backplane, MP core I/O cards SCSI cables, bulk power, chassis fans, front panel display, intrusion switches, and external system bus adapters (SBA) link connectors. Figure 1-11 System Backplane Block Diagram System Backplane LBA Core I/O 0 LBA PCI-X Backplane Cell 0 Cell 1 XBC XBC Cell boards are perpendicular to the system backplane. Cell 2 Core I/O 1 Cell 3 Detailed Server Description 23

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Table 1-4 Removable Media Drive Path
Path
Removable Media
0/0/0/2/1.x
1
.0
Slot 0 media
1/0/0/2/1.x
1
.0
Slot 1 media
1
X equals 2 for a DVD drive while X equals 3 for a DDS-4 DAT drive.
Table 1-5 Hard Disk Drive Path
Path
Hard Drive
0/0/0/2/0.6.0
Slot 0 drive
0/0/0/3/0.6.0
Slot 1 drive
1/0/0/2/0.6.0
Slot 2 drive
1/0/0/3/0.6.0
Slot 3 drive
System Backplane
The system backplane board contains the following components:
•
Two crossbar chips (XBC)
•
Clock generation logic
•
Preset generation logic
•
Power regulators
•
Two local bus adapter (LBA) chips that create internal PCI buses for communicating with
the core I/O card.
The backplane also contains connectors for attaching the cell boards, PCI-X backplane, MP core
I/O cards SCSI cables, bulk power, chassis fans, front panel display, intrusion switches, and
external system bus adapters (SBA) link connectors.
Figure 1-11 System Backplane Block Diagram
PCI-X Backplane
Cell 0
Cell 1
System Backplane
Cell boards are perpendicular
to the system backplane.
XBC
XBC
LBA
LBA
Cell 3
Cell 2
Core I/O 0
Core I/O 1
Detailed Server Description
23