Chapter 1
Introduction
Overview
7
Front Panel
Front Panel Indicators and Controls
The front panel, located on the front of the server, includes the power switch and status LEDs. See Figure 1-4.
Status LEDs
The following status LEDs are on the front panel:
•
Standby Power LED (green)
•
MP (Management Processor) Present LED (green)
•
Status LEDs: Run (green), Fault (red), Attention (yellow), and Power (green) LEDs
•
Remote port status LED (green)
Figure 1-4
Front Panel Display
Cell Board
The cell board contains the processors, main memory, and the cell controller (CC) application-specific
integrated circuit (ASIC) that interfaces the processors and memory to the I/O. The CC provides a connection
that allows communication with the other cell board in the system. It connects to the proceessor dependenat
hardware (PDH) and micro controller hardware. Each cell board holds up to 16 DIMMs. There can be one or
two cell boards installed in an HP 9000 rp7420 server. A cell board can be selectively powered down for cell
replacement without affecting the other cell in another configured partition.
System Backplane
The system backplane is comprised of the clock generation logic, the reset generation logic, DC-to-DC
converters, power monitor logic, and two Local Bus Adapter (LBA) ASICs that create internal PCI buses for
communicating with the MP (Management Processor)/SCSI Core I/O cards. It also includes connectors for
attaching the cell boards, the PCI-X backplane, MP/SCSI Core I/O cards, SCSI cables, bulk power, chassis
fans, the front panel display, intrusion switches, and the system scan card. Unlike Superdome or the HP 9000
rp8400, there are no Crossbar Chips (XBC) on the system backplane.
Only half of the core I/O board set connects to the system backplane. The MP/SCSI Core I/O boards plug into
the backplane, while the LAN/SCSI boards plug into the PCI-X backplane.
Содержание 9000 rp7420
Страница 4: ...Contents iv Index 67 ...
Страница 6: ...Tables vi ...
Страница 8: ...Figures viii ...
Страница 74: ...Chapter 4 Cabling and Power Up Using the Checklist 66 ...
Страница 76: ...Index 68 U unpacking inspecting for damage 12 V verifying system configuration 61 voltage check 46 ...