Installation Guide, Fifth Edition - HP 9000 rp7420 Server

Chapter 4

Cabling and Power Up

MP Core I/O Connections

Each HP 9000 rp7420 Server can have up to two MP Core I/O board sets installed. Which allows two

partitions to operate, or MP Core I/O redundancy in a single partition configuration. Each MP Core I/O board

set consists of two boards: the MP/SCSI board and the LAN/SCSI board. The MP/SCSI board is oriented

vertically and accessed from the back of the server. The LAN/SCSI is accessed from the PCI/PCI-X expansion

card bay. Only the primary MP core I/O board set (MP/SCSI slot 1 and LAN/SCSI slot 8, chassis 1) is required

for a single partition implementation. The secondary MP/SCSI board is not necessary for full operation;

however, without the secondary MP/SCSI board, only two internal disks can be accessed.

MP/SCSI Connections

The MP/SCSI board is required to update firmware, access the console, turn partition power on/off, access all

but two of the internal peripherals, and use other features of the system.

Connections to the MP/SCSI board include the following:

• DB25 Connector, by way of the M cable

This RS232 connector provides connections for a local console, external modem, and a UPS. The server

end of the M cable terminates in a DB25 connector. The opposite side of the cable terminates in three DB9

connectors labeled CONSOLE, UPS, and REMOTE.

• 10/100 Base-T LAN RJ45 connector (for LAN and Web Console access).

This LAN uses standby power and is still active if the front panel power switch is off and AC is present.

• Internal LVD Ultra 160 SCSI channel for connections to internal mass storage

• Internal SE Ultra SCSI channel for connection to an internal removable media device.

LAN/SCSI Connections

The LAN/SCSI board is a PCI form factor card that provides the basic external I/O connectivity for the

system.

Connections to the LAN/SCSI board include the following:

• PCI-X to PCI-X bridge for multi-device compatibility

• Internal LVD Ultra 160 SCSI channel for connections to internal mass storage

• External LVD Ultra 160 SCSI channel connected to a 68-pin VHDCI connector

• 10/100/1000 Base-T LAN RJ45 connector

The primary LAN interface is located on the LAN/SCSI board installed in the rightmost slot when viewing

the system from the back.

Management Processor Access

NOTE To access the Management Processor for the initial installation, the M cable must first be

connected to the DB25 connector located on the primary MP/SCSI board. The primary

MP/SCSI board is located in the lower MP/SCSI board slot.