IBM Enterprise Server H80 Series - Manual (Page 17)

Chapter 1. Introducing the Model H80
The RS/6000 Enterprise Server Model H80 Series is a multiprocessor, multibus
system packaged in drawers. The processors and memory are packaged in a 5
EIA-unit central electronics complex (CEC drawer), and the I/O devices are in a 5
EIA-unit I/O drawer. The basic system consists of one CEC drawer and one I/O
drawer in the same rack. Connections between the CEC drawer and I/O drawers
are made through a number of cables which include the V/S COMM cable, RIO
(Remote Input Output) cables, and JTAG cable.
The CEC drawer supports one processor card, which can have up to six processors,
each having its own L2 cache. The processors share common system memory.
The system memory resides on one or two memory riser cards in the CEC drawer.
Up to 16 GB of user memory can be installed.
Power is provided to the system rack through an ac power cord that is connected to
a distribution bus. Power is connected from the distribution bus to each drawer
independently. All drawers use 200 - 240 V ac power.
The primary I/O drawer has the following:
14 PCI slots
System operator panel
SPCN controller
Interrupt and system bus control logic
Service Processor
Optional boot DASDs
The PCI bus speeds are as follows:
Up to 33Mhz for the four 32 bit slots at 5 V
Up to 66Mhz for the ten 64 bit slots at 3.3 V
Slots 1-5, 8-10, 13 and 14 support either 32 or 64 bit PCI adapters. The remaining
slots are 32 bit only.
The primary I/O drawer has space for up to three media devices (tape, CD-ROM,
and diskette drive). Two optional disk drives can occupy PCI slots 13 and 14.
Chapter 1. Introducing the Model H80 1