IBM F80 User Manual

RS/6000 7025 Model F80

Technical Overview and Introduction

May 9, 2000

Stephen Lutz

Shyam Manohar

Scott Vetter

Internationa l Techn ical Su ppor t Organ iza tion

Austin, TX

IBM

© Copyright IBM Corp. 2000

RS/6000 7025 Model F8 0 Techn ical Overv iew

IBM RS/6000 7025 Model F80 Server

IBM achieved leadership performance in the high-end SMP UNIX server
marketplace through the balanced design of the 24-way RS/6000 7017 Model
S80, which ranked top in the industry standard TPC-C benchmark at 135,815.

On May 9, 2000, IBM introduced the RS/6000 7025-F80, 7026-H80, and
7026-M80 to enhance the mid-range server lineup with products using many of
the design elements that led to the success of the high-end Model S80.

Overview

While the IBM RS/6000 Models F80 and H80 are the systems that provide a
growth path for existing installations of Model F50s and H70s, the Model M80 is
designed to provide leadership performance among the mid-range 8-way
systems. The target for performance improvement over the existing mid-range
Model F50 is over three times with the Model F80 and H80, and over five times
with the Model M80 server.

In addition to providing CPU and I/O expandability, the Model F80 combined with
the latest storage technology provides the maximum internal storage capability
available among the current line of RS/6000 mid-range servers.

This paper discusses, in detail, the processor, memory, I/O, expandability,
reliability, and other technical aspects related to the Model F80.

IBM RS/6000 Model F80 Description

The IBM RS/6000 Model F80 is a member of the 64-bit family of symmetric
multiprocessing (SMP) servers from IBM. The Model F80 is a 64-bit deskside
system, which can be configured as a 1-, 2-, 4-, or 6-way SMP with up to 16 GB
of real memory.

The Model F80 offers flexibility regarding the number of CPUs, memory DIMMs,
PCI adapters, and disk drives desired for a specific application or usage.

Physical Package

The Model F80 is packaged in a rugged black deskside steel chassis. The Model
F80 server includes a modular hot-swap disk subsystem that allows fast, easy
addition and replacement of drives. It has a maximum internal storage capacity of

254.8 GB (218.4 GB hot-swappable) and the possibility to double this as new
storage technologies are made available. The Model F80 has a flexible I/O
subsystem including ten 64-bit hot-plug PCI slots. It is shipped with the internal
adapters and devices installed and configured; software can also be preinstalled
if desired.

The Model F80 is designed to operate in a typical office environment with
standard AC power at 100-127 volts or 200-240 volts. The Model F80 systems
are built with two standard internal hot-swappable power supplies that combine to
provide ample power for any configuration. An optional third internal
hot-swappable power supply with two hot-pluggable fans can be ordered to
provide redundant power and cooling, allowing the system to continue running in
the event of a failed fan or power supply. In the event of one of the fans failing, the

© Copyright IBM Corp. 2000 1

other fans increase their speed to provide sufficient cooling. The hot-pluggable
fans are performance monitored by the SPCN (see “System Power Control
Network (SPCN)” on page 15). The hot-swappable power supplies and fans can
be replaced concurrently if the optional redundant power is installed.

The dimensions of the Model F80 are 483 mm W x 728 mm D x 610 mm H (19.0”
W x 28.7” D x 24.0” H). The weight is from 70 kg (155 lbs) to 95 kg (209 lbs)
depending on the configuration. Unlike the Model F50, the Model F80 does not
provide rollers.

The Model F80 is designed for customer setup of the machine and for
subsequent addition of most features.

Figure 1 shows front/side view of a Model F80 showing the location of the major
features. A discussion of these features follows.

Figure 1. Model F80 Over view

On the bottom of the chassis are three slots on the backplane used for the
processor card (top slot) and the two possible memory cards (middle and bottom
slots). A

dummy

memory card is installed in all shipped units for each unused

memory slot for safety and proper machine cooling.
The following ports are provided by Model F80 as shown in Figure 2:

• One Ultra2 SCSI port for external attachment use (mini 68-pin VHDCI
connector)

The industry standard VHDCI 68-pin connector on the backside of the Model
F80 allows attachment of various LVD and SE external subsystems. A 0.3
meter converter cable, VHDCI to P, mini-68 pin to 68-pin, (# 2118) can be
used with older external SE subsystems to allow a connection to the VHDCI

1

Very High Density Cable Interconnect (VHDCI)

connector.

2 RS/6000 7025 Model F80 Te ch nical Over vi ew

1

• 10/100 Mb/s Ethernet port (RJ-45 connector)

• Four serial ports (max. 230 KB/s, 9-pin D-shell)

• One parallel port (bi-directional)

• Test port

• Keyboard and mouse port
The test port is for diagnostics and is normally covered with a metal plate. It uses

the same connector as the parallel port. To avoid confusion, this port should
remain covered.

Internal Storage

Figure 2. Model F80 Rear Vi ew

The system comes preconfigured with a CD-ROM and a diskette drive and one
free media bay for customer expansion, such as a tape device. Any devices in the
media bays are connected to the internal F/W SCSI controller (no additional
cable is required).

The Model F80 features two six-packs providing 12 hot-swap disk bays and an
additional boot disk bay for two additional disks (not hot-swappable). The two
six-packs can be either equipped with a SCSI backplane (# 6553) or SSA
backplane (# 6554). SCSI and SSA six-packs can be mixed.

The SCSI backplane supports one inch and 1.6 inch drives. If the older 1.6 inch
drives are used, these occupy two adjacent bays. The new SCSI carrier has one
of two interposers between the drive and backplane, depending on whether the
drive is 68-pin or 80-pin SCSI. All SCSI drives sold new with a Model F80 will be
80-pin drives.

SCSI RAID is supported for the

under-the-cover

disks, but requires the addition
of a SCSI RAID adapter. To cable a second internal SCSI RAID six-pack, a cable
assembly is attached to an external SCSI port on the SCSI RAID adapter, run

IBM RS/6000 7025 Model F80 Server 3

through a pass through opening in the rear bulkhead on the power supply side of
the backpanel, and attached to the SCSI backplane.

SSA disks require the addition of an SSA adapter. To cable internal SSA, a cable
assembly is attached to two external ports on the SSA adapter. This runs through
a pass through opening in the rear bulkhead on the power supply side of the
backpanel and is attached to both ends of the SSA backplane. When using both
SSA six-packs, the cable runs to one end of each of the two backplanes with a
short SSA cable in between the two backplanes. These configurations provide a
loop, which is part of the SSA architecture. The SSA six-pack requires dummy
jumper cards in vacant bays to maintain the SSA loop, and so can only support
one inch drives. Booting from SSA disks attached to an Advanced SerialRAID
adapter (# 6225) is supported from the six-pack or external SSA disks provided
that the disks are arranged in a non-RAID configuration.

The optional dual boot bay holds a two-pack located between the operator panel
and the top six-pack of the cabinet (D13, D14 in Figure 3). They are SCSI drives
attached to the same carriers as are used for the six-packs. They plug into a
backplane in the two-pack that does not support hot-swap. The backplane is
designed in such a way that the two disks can either be part of the same SCSI
bus or attached to different SCSI busses to support mirroring of the boot image.
The disks should have 80-pin connectors so that a flex interposer between the
disks and the backplane is unnecessary. These two disks do not impact the two
six-packs, so the six-packs can be used, for example, in a RAID configuration. If
the dual boot bay option is not installed, one of the six-packs will not be able to
provide RAID, because booting from RAID disks is not supported.

Figure 3 shows the internal devices and bays of a Model F80.

Figure 3. Internal Device s and B ay s of the Mod el F80

4 RS/6000 7025 Model F80 Te ch nical Over vi ew

Operator Panel

The Model F80 cabinet incorporates the operator panel and indicators for the
system. The panel consists of the following features (see Figure 4):

• Power On/Off Button

• Power-on LED (Green)

• System Attention LED (Yellow)

This LED indicates to a user that there is an attention condition on the system.

• System Activity LEDs ( Green)

These LEDs report the status of the integrated SCSI and Ethernet ports.

• Operator Panel Display

The display has two lines of sixteen characters each. The display shows
reference codes from the service processor, the SPCN, and the operating
system. These codes can be either informational codes or error codes.
Informational codes will have the System Attention LED off; error codes will
have the System Attention LED on.

• Service Processor Reset Button

The service processor reset button is a single execution button used to reset
the service processor and bring the system back into standby mode. Access to
this button is restricted by only having access to this button through a

pinhole

in the operator panel cover. This button is for service use only.

• Speaker (beeper)

Figure 4. Operator Pane l

IBM RS/6000 7025 Model F80 Server 5

System Architecture and Technical Overview

Figure 5 shows the system schematic of the Model F80. In this section the
different physical components in the schematic and the SMP processor
configurations are discussed.

64-Bit PCI
64-Bit PCI
64-Bit PCI

64-Bit

SCSI

Connectors
UPS
CPM

Native
I/O
Connectors

CSP

ISA Bridge
Super I/O
DUART

Memory Card 1

SMI SMI SMI SMI

Memory Card 2

SMI SMI SMI SMI

Bus 7,8

Bus 5,6

PCI
Bridge

Bus 3,4

Bus 1,2

DRAM Flash

Controller

403

SMI
Bus 0,1,2,3

SMI
Bus 4,5,6,7

64-Bit

64-Bit

PCI 2

PCI 1

I/O
Controller

RIO
Port 0

PCI
Bridge

PCI
Bridge

Memory
Controller

6XX
Bus 1

RIO
Port 1

Bus 7,8

64-Bit PCI

Bus 5,6

64-Bit PCI

Bus 3,4

64-Bit PCI 5V

Bus 1,2

64-Bit PCI 5V

Bus 7,8

64-Bit PCI 5V

Bus 5,6

64-Bit PCI 5V

Bus 3,4

64-Bit PCI

Bus 2

32-Bit Not Connected

Bus 1

32-Bit Ethernet

4 MB Cache

6XX
Bus 0

Proc.

2 Way

Proc.

4 MB Cache

2-Way
Mother Board

Figure 5. RS/6000 M odel F80 Sys tem Sc hem atic for 2- , 4-, or 6-Way SMP

CPU Architecture

The key components in the CPU include the processor, the processor packaging,
memory controller, memory subsystem, and the I/O interface.

RS64 III RISC Pr ocessor

The RS64 III processor card used in the Model F80 has the following attributes:

• 450 MHz or 500 MHz operating frequency

6 RS/6000 7025 Model F80 Te ch nical Over vi ew

4 MB Cache

Proc.

2 Way

Proc.

4 MB Cache

4-Way Processor Card

4 MB Cache

Proc.

2 Way

Proc.

4 MB Cache

OR

2-Way Processor Card

4 MB Cache

Proc.

2 Way

Proc.

4 MB Cache