Installation Guide, Third Edition - HP Integrity rx8640 SEU

1 Server Expansion Unit Overview

The Server Expansion Unit (SEU) is a member of the HP business-critical computing platform

family: a 9U tall, mid-range, mid-volume IO expansion cabinet. It provides additional IO

performance with the inclusion of 16 PCI-X slots or a combination of 8 PCI-X slots and 8 PCIe

slots, two additional core IO cards, four more hard disk drives, and two removable media drives.

The SEU connects to the HP Integrity rx8640 server, providing additional IO slots to the server.

There are no cell boards installed in the SEU. Its high-availability features include N+1 hot-plug

fans and power, redundant power cords, hot-plug PCI cards and internal hard disk drives.

Differences from the previous SEU include the following:

• New PCI-X IO Backplane

• New PCI-X/PCIe IO Backplane

• New core IO and core IO backplane board

• New mass storage backplane

• New front panel display

• New system backplane

• New IO cable assembly

• New backplane connectors

Figure 1-1 SEU (Front View)