Utilities Subsystem; Uguy; Sbch; Sbc - HP Integrity Superdome SX1000 User Manual

Utilities Subsystem

Both types of servers contain a group of boards that together form the Utilities subsystem. These include:
•

UGUY

• SBCH—Single Board Computer Hub
• SBC—Single Board Computer
• HUCB—HalfDome Utility Connector Board
UGUY
The UGUY board is a major component of the utility subsystem. It provides the following functions:
• System clocks
• Cabinet power monitor
• Cabinet utility circuits providing scan, reset, and LED driver functions
• Cabinet ID number switch
Every cabinet contains one UGUY. The UGUY plugs into the HUCB. It is not hot swappable. Its MP
microprocessor controls power monitor functions, executing the power monitor 3 (PM3) firmware and the
cabinet-level utility (CLU) firmware.

SBCH

The SBCH, along with the SBC, forms part of the MP function. It provides the physical and electrical
interface to the SBC, the fanning out of the Universal Serial Bus (USB) to internal and external subsystems,
and a LAN 10/100BT Ethernet connection. It plugs into the HUCB and is hot swappable. Every CPU cabinet
contains one SBCH board, but only one SBCH contains an SBC board used as the MP for the complex. The
remaining SBCH boards act as USB hubs.

SBC

The SBC board is an embedded PC running System Utility Board (SUB) firmware. It is the core of the
Management Processor and plugs into the SBCH board through a PC104 interface.The SBC provides three
external interfaces to the Utility Subsystem:
• LAN (10/100BT Ethernet) for customer console access
• RS232 port for remote access from the response center through a modem
• RS232 port for local console access for manufacturing and field support personnel
The modem function is not included on the SBC and must be external to the cabinet.

HUCB

The HUCB is the backplane of the Utility Subsystem. It provides cable distribution for all the utility signals
except the clocks. It also provides the customer LAN interface and serial ports. The SMS connects to the
HUCB. The system "type" switch is located on the HUCB. There are no active circuits on this board. It is not
hot swappable.
Chapter 1
Overview
Utilities Subsystem
9