ASUS P6000 User Manual

AP6000

Dual Pentium® II Server

Hardware Reference Guide

USER’S NOTICE

No part of this manual, including the products and software described in it, may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into
any language in any form or by any means, except documentation kept by the pur­chaser for backup purposes, without the express written permission of ASUSTeK
COMPUTER INC. (“ASUS”).

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LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL
OR PRODUCT.

Product warranty or service will not be extended if: (1) the product is repaired,
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Products and corporate names appearing in this manual may or may not be regis­tered trademarks or copyrights of their respective companies, and are used only for
identification or explanation and to the owners’ benefit, without intent to infringe.

• Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation.

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The product name and revision number are both printed on the product itself. Manual

revisions are released for each product design represented by the digit before and
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For previous or updated manuals, BIOS, drivers, or product release information, con­tact ASUS at http://www.asus.com.tw or through any of the means indicated on the
following page.

SPECIFICA TIONS AND INFORMA TION CONTAINED IN THIS MANUAL ARE
FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO
CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CON­STRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSI­BILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MA Y
APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE
DESCRIBED IN IT.

Copyright © 1998 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: AP6000
Manual Revision: 1.00
Release Date: July 1998

2

AP6000 Hardware Reference Guide

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC.

Marketing

Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

Fax: [phone]
BBS: [phone]
Email: [e-mail]
WWW: www.asus.com.tw
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER INTERNATIONAL

Marketing

Address: 6737 Mowry Avenue, Mowry Business Center, Building 2

Newark, CA 94560, USA
Fax: [phone]
Email: [e-mail]

Technical Support

Fax: [phone]
BBS: [phone]
Email: [e-mail]
WWW: www.asus.com
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER GmbH

Marketing

Address: Harkort Str. 25, 40880 Ratingen, BRD, Germany
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

Hotline: [phone]
BBS: 49-2102-448690
Email: [e-mail]
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

AP6000 Hardware Reference Guide 3

CONTENTS

I. Introduction......................................................................................7

This Reference Guide.................................................................7

Server Component Checklist......................................................7

Server Features...........................................................................8

Motherboard Features: ASUS P2B-DS ................................8

Chassis Features: AS-50 .......................................................8

Electrical Safety .........................................................................9

Static-Sensitive Devices.............................................................9

Tools Required .........................................................................10

Server Preparation ....................................................................10

Starting the Server....................................................................11

II. System Components .....................................................................12

ATX Power Button .............................................................12

LED Indicators ...................................................................12

Server Back Side ......................................................................13

Power Supply......................................................................13

Chassis Panels ....................................................................14

Circulation System .............................................................15

Fan Replacement ................................................................15

Fixed Storage Device Tray .......................................................16

Fixed Device Bay Cover Clips ...........................................16

Fixed Device Bay Cover ....................................................16

Fixed Storage Devices..............................................................17

Floppy Drive and CD-ROM ...............................................17

Floppy Drive and Storage Device Spacers .........................17

Hot-Swap Trays........................................................................18

Hot-Swap Tray Interface ..........................................................18

Hot-Swap Tray Usage ..............................................................19

Hot-Swap Tray Front Connections .....................................19

Hot-Swap Tray Connector Board .............................................20

Hot-Swap Tray Rear Connections ......................................20

Motherboard Securing ........................................................21

Spacer Mounts ....................................................................21

4

AP6000 Hardware Reference Guide

CONTENTS

SCSI Backplane .......................................................................22

SCSI Board Placement .......................................................22

SCSI ID Setting ..................................................................23

SCSI ID Dip Switches ........................................................23

SCSI Connections ....................................................................24

SCSI Termination .....................................................................24

SCSI ID Jumpers......................................................................24

SCSI ID Priority .......................................................................24

RAID card connections ............................................................24

Cables .......................................................................................26

Cable Connections ...................................................................26

Device Connections............................................................27

III. Power Information......................................................................28

Output Regulations...................................................................28

Minimum Cross-Loading & Load Range Graph .....................28

DC Load Requirements............................................................28

Power Supply Requirement Calculation Table ........................29

AP6000 Hardware Reference Guide 5

FCC & DOC COMPLIANCE

Federal Communications Commission Statement

This device complies with FCC Rules Part 15. Operation is subject to the
following two conditions:

• This device may not cause harmful interference, and

• This device must accept any interference received, including interfer­ence that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with
manufacturer’s instructions, may cause harmful interference to radio com­munications. However, there is no guarantee that interference will not oc­cur in a particular installation. If this equipment does cause harmful inter­ference to radio or television reception, which can be determined by turn­ing the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to
which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

WARNING! The use of shielded cables for connection of the

monitor to the graphics card is required to assure compliance

with FCC regulations. Changes or modifications to this unit not
expressly approved by the party responsible for compliance could void
the user’s authority to operate this equipment.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise
emissions from digital apparatus set out in the Radio Interference Regula­tions of the Canadian Department of Communications.

6

AP6000 Hardware Reference Guide

I. Introduction

I. Introduction

Y ou are reading the AP6000 server Hardware Reference Guide. The AP6000
is configured on the ASUS P2B-DS smart motherboard which uses the
440BX chipset from Intel which supports dual Pentium II processors and
100MHz front side Bus in order to accelerate even the most complicated
server tasks.

This Reference Guide

This hardware reference guide provides information about the various com­ponents used in this server . All components in shown in this reference guide
are optional and may be individually purchased to complete this server.

Checklist

I. Introduction

Server Component Checklist

If assembling this server by yourself, it is important to prepare all the server
components before starting. This will save a great deal of time by not hav­ing to hunt down components. The following checklist provides a guideline
as to the necessary components for a corporate server.

Motherboard: ASUS P2B-DS
Chassis: ASUS AS-50
Power Supply
Pentium II Processor(s)

DIMM memory modules
Hard Disk Drives

Floppy Drive
CD-ROM Drive
Ethernet Card
RAID controller

II. Components

AP6000 Hardware Reference Guide 7

I. Introduction

I. Introduction

Features

Server Features

Motherboard Features: ASUS P2B-DS

• Processor: (2) Intel Pentium II processors running at 66 or 100MHz Front

• Memory: (4) 168pin DIMM sockets for 8MB-1GB SDRAM/EDO with

II. Components

• Super Multi-I/O: (2) PCI Bus Master IDE Ports with Ultra DRAM-33

• SCSI: Onboard Ultra-II SCSI controller and LVDS to single end con-

• Expansion Slots: (4) PCI, (2) ISA slots, and (1) AGP port.

Chassis Features: AS-50

• Chassis: Tower server chassis with wheels

• Backplane: Wide-SCSI backplane with remote SCSI ID dip switches

• Power: ATX 350W/400W power supply with optional redundant power

• Device Bays: Support for (1) 3.5inch floppy device, (3) 5.25inch de-

Side Bus.

support for ECC and 100MHz SDRAM.

support, (2) floppy, (2) serial COM ports, (1) parallel, (1) PS/2 key­board, (1) PS/2 mouse, (2) USB ports, and (1) IrDA connector.

verter with (2) wide SCSI connectors and (1) narrow SCSI connector.

and power to support 8 wide SCSI hard disk drives.

supply .

vices, (8) hard disk drives in removable aluminum trays.

8 AP6000 Hardware Reference Guide

I. Introduction

Electrical Safety

Observe the following safety instructions any time you are connecting or
disconnecting devices to the workstation.

DANGER: An electrical outlet that is not correctly wired could place

hazardous voltage on metal parts of the system or the devices that
attach to the system. It is the responsibility of the customer to ensure

that the outlet is correctly wired and grounded to prevent an electrical shock.
Before installing or removing signal cables, ensure that the power cables

for the system unit and all attached devices are unplugged.
When adding or removing any additional devices to or from the system,

ensure that the power cables for those devices are unplugged before the
signal cables are connected. If possible, disconnect all power cables from
the existing system before you add a device.

Use one hand, when possible, to connect or disconnect signal cables to pre­vent a possible shock from touching two surfaces with different electrical
potentials.

Safety / Static

I. Introduction

II. Components

During an electrical storm, do not connect cables for display stations, print­ers, telephones, or station protectors for communications lines.

To prevent electrical shock hazard, disconnect the power cable from the
electrical outlet before relocating the system.

CAUTION: This product is equipped with a three-wire power cable

and plug for the user’s safety. Use the power cable in conjunction
with a properly grounded electrical outlet to avoid electrical shock.

Static-Sensitive Devices

WARNING: Adapters, planars, diskette drives, and disk drives are

sensitive to static electricity discharge. These devices are wrapped in
antistatic bags to prevent this damage. T ake the following precautions:

• If you have an antistatic wrist strap available, use it while handling the
device.

• Do not remove the device from the antistatic bag until you are ready to
install the device in the system unit.

• With the device still in its antistatic bag, touch it to a metal frame of the
system.

• Grasp cards and boards by the edges. Hold drives by the frame. Avoid
touching the solder joints or pins.

• If you need to lay the device down while it is out of the antistatic bag,
lay it on the antistatic bag. Before picking it up again, touch the anti­static bag and the metal frame of the system unit at the same time.

• Handle the devices carefully in order to prevent permanent damage.

AP6000 Hardware Reference Guide 9

I. Introduction

Tools / Preparation

I. Introduction

Tools Required

A Phillips (cross) and standard (flat) screwdriver is needed to install or re­move the components in this server.

Server Preparation

1. Unpack your server, do not connect the power cord.

II. Components

ATX power supply that is normally off until an electrical signal is given to
the power supply through a momentary switch located on the front of the
server. There is always a standby power in the power supply in order for
A TX power supply features to work, therefore removing the power cord is
necessary to prevent electrical shocks when working on the server com­ponents.

2. Unlock the keylocks if necessary. This server is equipped with three
security locks to prevent unauthorized access. T urn the key counterclock­wise to unlock and clockwise to lock the side panels or front door.

IMPORTANT: Most servers uses an AT power supply that has a

fixed On and Off switch located on the front. This server uses an

3. Open the front door and side panels to install final server components,
such as CPU, Memory, Hard Disk Drives, expansion cards. Use this
hardware reference guide along with your motherboard manual in order
to make these installations.

4. Connect a Keyboard and Mouse (purchased separately)

5. Connect a VGA-compatible monitor (purchased separately)

6. Connect a printer to the parallel port if desired.

7. Connect server to network (an optional network card is needed)

WARNING: To prevent electrical shock or fire, be sure not to

plug telecommunications/telephone cables into the network RJ45
connector in the server if one is installed.

8. Connect power cord to the server’s power supply.

9. Connect Server to AC power - The power supply will automatically de­tect and adjust to 120VAC or 240VAC power.

WARNING: This server is designed for connection to a grounded

(earthed) outlet. To reduce the risk of electrical shock or damage to
your server, do not bypass the grounding plug.

10 AP6000 Hardware Reference Guide

I. Introduction

Starting the Server

Turn on the system unit by turning the power knob clockwise and pushing
inwards momentarily . The power button will snap back because ATX power
systems have a electrical On/Off switch unlike AT systems which require a
permanent On or Off position. If the power indicator does not light, make
sure the power cord is connected to the system unit and to a working grounded
outlet.

When booting your server for the first time, hold the “Delete” key and enter
BIOS setup in order to make settings. ISA cards requires that you set “IRQ
XX Used by ISA : Yes” in BIOS PNP AND PCI SETUP in order for that
IRQ to be reserved for your ISA expansion card. You need to set “Boot
Sequence : A, C” in BIOS FEATURES SETUP in order to boot from a
floppy diskette to setup your hard disk. Insert a bootable floppy diskette and
select “Save & Exit Setup” from the BIOS main menu. Once your server
has properly booted, an “A:\>” prompt will appear. Replace your boot disk
with a RAID setup diskette and setup your RAID. Reboot your server with
the operating system boot disk in order to install drivers for your devices
(such as CD-ROM and SCSI devices) and install your server operating sys­tem. You may be prompted for manufacturer supplied driver diskettes for
each device on your server if they are not included in the operating system
setup drivers.

Starting

I. Introduction

II. Components

NOTE: Non-RAID hard disk drives can be setup using boot dis­kettes provided with the server operating system or with MSDOS
“FDISK.EXE”. You must have the motherboard or other SCSI de-

vice driver diskettes when prompted by the operating system setup.

AP6000 Hardware Reference Guide 11

II. System Components

The front side of the server is provided to show the front exterior compo­nents of this server. The chassis is made of strong rust-resisting metal and
covered with a protective ivory surfacing.

ATX Power Button

This server uses an ATX power supply. Turn the power switch clockwise

II. Components

Front Side

and push in momentarily to turn on or turn off the power.

LED Indicators

The front of the server provides several LEDs to show the server’s power,
hard disk drive, and fan statuses.

II. System Components

Power LED

Hard Drive Activity LED

Fan #1 Error (when lit)
Fan #2 Error (when lit)
Fan #3 Error (when lit)
Fan #4 Error (when lit)
Fan #5 Error (when lit)

LED indicators

Floppy Drive

CD-ROM Drive

Hot Swap Tray

Metal Side
Access Panel

ATX Power Button

Fixed Device Bays
(for tape or hard
disk drives)

Metal Door Lock

Stabilizers
with wheel

Server front side

12 AP6000 Hardware Reference Guide

Metal
Security Door

II. System Components

Server Back Side

The back side of the server is provided to show the back exterior compo­nents of this server.

Power Supply

Power Supply Fan

Side Panel Screw
Power In Connector

PS/2 Keyboard

USB Ports 1 and 2

PS/2 Mouse

Back Side

Parallel Port
Serial Ports

COM1 and COM2

Network Card

SCSI RAID Card

Graphics Card

Circulation System
Outlet Vents

Server back side

Power Supply

The power supply must be inserted and removed from the right side of the
chassis. Remove the right side panel in order to access the power supply.
Several screws secure the power supply to the chassis as circled. A separate
face plate is also mounted on the power supply.

II. Components

Power supply back and side

AP6000 Hardware Reference Guide 13

Chassis Panels

There are two panels on the chassis, one left side and one right side panel.
Each panel is secured by two screws on the back of the server (as circled) and
also by a CAM. The CAM has a rotating knob with its own keylock. T urn the
knob counterclockwise to release and clockwise to secure. The keylock can
be used to keep the knob from being turned by unauthorized people.

II. Components

Chassis Panels

power even when powered Off when plugged into an AC electrical outlet.

II. System Components

WARNING: Always remove the power cord when working on the

server internal components to prevent electrical shocks or damage
to electrical components. ATX power supplies always have standby

Left Side Panel

Left side panel

Fan Module

Power Supply
Housing

Pentium II processors

Ethernet Card
SCSI RAID Card
Graphics Card

Left Panel Knob

Side Panel Screw

Server left side

14 AP6000 Hardware Reference Guide

II. System Components

Circulation System

The server’s air circulation system is comprised of five 3 inch (8 cm) fans
mounted on a metal fan module. The circulation system cools the hard disk
drives by bringing fresh air in from the front and forcing the hot air out
through the back. It is important to keep the air surrounding the hard disk
drives below 122˚F (50˚C) to prevent hard disk failures.

Fan Replacement

The fan module can be removed by pulling the handle and inserted by push­ing. The handle must be in the out position to insert the fan module. The
individual fans are secured by two clips and two hooks. T o release these clips,
use a screw driver to push these clips in and then slide the fan out. If an
individual fan fails, remove the fan and send it back to the vendor for replace­ment. If all five fans fail, it may be that the fan control board needs replacing,
remove the control board and send it back to your vendor for replacement.

Fan Module

Air Inlet Vents (along

Release Handle

full length of door)

II. Components

Circulation System

Removing or inserting the fan module

Fan 1

Fan 2

Release Handle
(from chassis)

Fan 3

Fan 4

Fan Module
Control Board

Fan 5

When replacing fans, be sure
that the fan rotations are in the
same direction. Use the
manufacturer’s sticker on one
side of the fan as a reference as
to the side. Air flows from the
front of the server to the rear.

Fan module

Fan Replacement (Reverse side)

AP6000 Hardware Reference Guide 15

Fixed Storage Device Tray

Internal fixed storage devices are mounted on removable trays. There are
four available, one for a floppy device and another three for full-size de­vices. There are six screws provided (as circled) for mounting a 4 inch de­vice such as floppy or hard disk drive. Four screws are provided (as boxed)
for mounting 6 inch devices such as a CD-ROM or tape drive.

Fixed Device Tray

II. Components

Fixed Device Bay Cover Clips

The device bay panel is held by two plastic clips on each side. Press these
clips in with a screw driver to release these clips.

II. System Components

Fixed storage device tray

Removing the device bay cover clips

Fixed Device Bay Cover

After releasing the device bay cover clips, pry the cover open with a screw
driver from the front.

Internal Fixed Storage Device Tray

Removing the device bay cover

16 AP6000 Hardware Reference Guide

II. System Components

Fixed Storage Devices

Floppy Drive and CD-ROM

The floppy drive fits in the topmost bay along with the power button. A CD­ROM can fit into either the second, third, or fourth bay from the top. A
metal clip on each side of the device tray secures the tray in place. Press
inwards to release the clips. The tray slides in or out on the side rails.

WARNING: If using an IDE hard disk drive in this large chassis, it is

recommended that only one is installed and with the shortest IDE cable
possible. Long IDE cables will cause poor signal. Select “...PIO/DMA Mode

: 3/1” in BIOS CHIPSET FEATURES SETUP for a more stable IDE operation.

Fixed Devices

II. Components

Removing Floppy and CD-ROM device

Floppy Drive and Storage Device Spacers

Spacers are required for cosmetics only. A floppy drive spacer is used to
cover the floppy drive and power button. A standard storage device spacer
is used to cover the CD-ROM, tape drive, or additional CD-ROMs. You
should purchase an extra spacer for each storage device.

Floppy Drive Spacer

Floppy and CD-ROM drive spacers

Floppy Drive

Storage Device Spacer

CD-ROM

Floppy and CD-ROM drives

AP6000 Hardware Reference Guide 17

Hot-Swap T rays

Maximum uptime in a server requires devices that can be easily replaced or
“swapped.” The main hard disks are mounted in internal hot-swap trays for
easy replacing. T o remove the tray , unlock the tray and pull on the handle. A
lock secures the handle and switches on or off the power to the hard drive.

II. Components

Hot-Swap Trays

II. System Components

Hot-Swap Tray (8 Total)

Hot-Swap Tray Keylock Positions

Lock/
Power
On

Unlock/
Power Off

Removing or inserting the hot-swap tray

Hot-Swap T ray Interface

The front of the hot-swap tray provides a keylock in order to switch the
power on, which also locks the handle, and switch the power off, which also
releases the handle. T wo LEDs provide information on the power and activ­ity status of the hard disk drive. When power is received by the hot-swap
tray’s connector board, the power LED will light. When data is written or
read to or from the contained hard disk drive, the activity LED will flash
proportional to the amount of data.

Air Inlet

Activity LED (SLED)

Keylock / Power Switch
Power LED (PLED)

Release / Transport Handle

Hot-swap tray face plate

18 AP6000 Hardware Reference Guide

II. System Components

Hot-Swap T ray Usage

Each hot-swap tray provides an aluminum carrier for a single SCSI hard
disk drives with a maximum height of 1 5/8 inch, width of 4 inches, and
length of 6 inches. The aluminum tray provides protection and maximum
heat dissipation for almost all types of high speed SCSI disk drives. The
provided cables and wires connect to the SCSI hard disk drive and screws
are needed to secure the tray to the bottom of the SCSI hard disk drive.

SCSI Cable

Power Connector

Aluminum Tray

SCSI ID

Activity LED
(ALED)

Hot-swap tray and its connectors

Hot-Swap Tray Front Connections

The hot-swap tray provides wires for connecting the activity LED, power
LED, SCSI ID, power, and SCSI signal. Connect the 8 pin connector to the
SCSI Address pins according to the colors shown. Connect the 2 pin con­nector to the activity signal pins according to the colors shown.

IMPORTANT: The following is only an example. Always consult your

hard disk drive documentation or labels for the exact wiring specific to your
hard disk drive make and model.

II. Components

Hot-Swap Trays

Seagate Cheetah (ST34501W) side opposite power & SCSI

Red

Unused

Black

Activity
Signal

White

Blue Black

SCSI Address (ID#)

Orange

Green Brown

1248

Yellow

Red

Pin 1

Pin 2

Hot-swap tray SCSI ID & activity LED wires connected (Seagate HD)

AP6000 Hardware Reference Guide 19

II. System Components

Hot-Swap Tray Connector Board

The connector board is mounted on the hot-swap tray to interface with the
SCSI backplane in the chassis. The connector board provides combines all
the signal and power into one docking connector for a clean hot-swap unit.

Hot-Swap Connector

II. Components

Hot-Swap Tray
Docking Connector

Hot-swap tray connector board parts

Hot-Swap Tray Rear Connections

KEY: These 2 pins connect to the keylock on the tray’ s front panel to turn on
and off the drive’s power.
PLED: These 2 pins connect to the power LED on the front of the tray to
show when the connector board receives power.
SCSI_ID: These 8 pins connect to the hard disk drive’s SCSI address pins
to set the SCSI ID number of the hard disk drive.
SLED & ALED: These two wires are connected as illustrated below.

KEY

SLED
(not used)

Wide SCSI
Connector

ALED_IN

PLED

Hard Disk Drive
Power Connector

(not used)

SCSI_ID

from tray’s front panel 3 pin
activity LED (SLED wire)

Connector Bridge for LED

from hard disk drive’s 2 pin
activity LED (ALED wire)

KEY PLED SCSI_ID Power

Hot-swap tray rear connections (Seagate HD)

20 AP6000 Hardware Reference Guide

Green
Black
Red

SLED
(wire)

Bridge

Red
Black

ALED
(wire)

II. System Components

Motherboard Securing

Remove the fan module before installing or removing the motherboard.
All screws are necessary to provide the needed stabilization to support all
the motherboard expansion items.

Spacer Mounts

These spacers are used to give added support to the motherboard. Make
sure that these are placed in the exact locations shown here for the
P2B-DS motherboard, do not place them in other locations or else dam­age may occur to the motherboard.

Motherboard

II. Components

Installed P2B-DS motherboard

Motherboard spacer mounts

Spacer Mount
(four required)

AP6000 Hardware Reference Guide 21

SCSI Backplane

The SCSI backplane of this server is comprised of two SCSI boards with a
Wide-SCSI connector , power input, and SCSI ID dip switches on each SCSI
board. This configuration allows Wide-SCSI hard disk drives to be docked
into the server using a common connector . The female end is located on the
SCSI board, while the male end is located on the hot-swap tray.

SCSI Board Placement

II. Components

SCSI Backplane

There are three screws on each side of the SCSI board. Both sides of the
cabinet side panels must be removed to access these screws. Please note
that notches on the top and bottom of the SCSI board must be placed as
shown in order to properly seat the SCSI boards into the chassis. The SCSI
board will only fit in one orientation but may be interchanged between the
top and bottom half but be aware of the SCSI ID setting of each board.

II. System Components

Top Half

SCSI board placement

Bottom Half

Notch Out (top)

Four SCSI Board
Docking Connectors

Notch In (bottom)

SCSI board front side

22 AP6000 Hardware Reference Guide

II. System Components

SCSI ID Setting

SCSI ID settings are made through DIP switches located on the SCSI board.
Each SCSI board IDSEL switch has default settings as labeled below. The
default settings were set for use with a 2-channel SCSI card. Each channel
may repeat the SCSI ID numbers of another channel. Make sure that each
IDSEL switch (on each channel) has its own unique setting if making changes
to these switches. See next page for more information on SCSI ID settings.

Notch Out (top)

68pin Wide SCSI

SCSI Board Power

Connector

IDSEL0

IDSEL1

SCSI ID Switches

IDSEL2
IDSEL3

Notch In (bottom)

SCSI Board back side

SCSI ID Dip Switches

The following illustrates the different possibilities using the dip switches.

SCSI ID

II. Components

ON

Setting for SCSI ID #0

ON

Setting for SCSI ID #1

ON

Setting for SCSI ID #2

ON

Setting for SCSI ID #3

IDSEL0 Default

IDSEL1 Default

IDSEL2 Default

IDSEL3 Default

ON

Setting for SCSI ID #4

ON

Setting for SCSI ID #5

ON

Setting for SCSI ID #6

ON

Setting for SCSI ID #7

ON

Setting for SCSI ID #8

ON

Setting for SCSI ID #9

ON

Setting for SCSI ID #10

ON

Setting for SCSI ID #11

ON

Setting for SCSI ID #12

ON

Setting for SCSI ID #13

ON

Setting for SCSI ID #14

ON

Setting for SCSI ID #15

AP6000 Hardware Reference Guide 23

SCSI Connections

Your server can support up to 15 user installed SCSI devices. Be sure to
include both internal and external SCSI devices in your device setup. Each
SCSI device (both internal and external) must have a unique address (or
SCSI ID). Check your SCSI device documentation for instructions. Be sure
to record all SCSI addresses so that you can prevent SCSI address conflicts.

II. Components

SCSI Information

SCSI Termination

SCSI devices are connected together in a “chain” by cables. Internal de­vices connect to the motherboard with a 50 pin or 68 pin flat ribbon cable.
A converter may be used to connect 50 pin devices to the 68 pin cable but
not vice versa. External SCSI devices may be connected using an external
SCSI connector or SCSI card with an external connector . If there are more
than one internal or external devices, additional devices are connected with
cables to form a “daisy chain.” Terminating the devices on the ends of the
SCSI Bus “chain” is necessary for SCSI devices to work properly. Devices
normally come with its termination enabled by jumpers or dip switches.
You must disable these termination for devices in between the ends.

II. System Components

SCSI ID Jumpers

All SCSI devices, including this motherboard with onboard SCSI, must have a SCSI
identification number that is not in use by any other SCSI device. There are sixteen
possible ID numbers, 0 through 15. The SCSI ID serves two purposes:

• It uniquely defines each SCSI device on the bus.

• It determines which device controls the bus when two or more devices try to use
it at the same time.

SCSI IDs on one channel do not interfere with the IDs on another channel. You can
connect up to 15 SCSI devices to this motherboard. You must set a SCSI ID number
(ID 0 to ID 15) for each device. Note that the onboard SCSI chipset is also a SCSI
device and will also require a SCSI ID number . SCSI devices vary in how they set the
ID number . Some use jumpers, others have some kind of selector switch. Refer to the
manual for any device you install for details on how to set its ID number .

SCSI ID Priority

The P2B-DS motherboard has an onboard 16bit single-channel SCSI chipset. SCSI
ID 15 has the highest priority, and SCSI ID 0 has the lowest priority.

RAID card connections

See your SCSI card’s User’s Manual.

24 AP6000 Hardware Reference Guide

II. System Components

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II. Components

SCSI Information

AP6000 Hardware Reference Guide 25

Cables

The cables in this server is just like that of any standard PC expect that 68
pin Wide-SCSI cables are provided for 50 pin or 68 pin SCSI devices used
in server systems. Your PC may use SCSI devices but are typically 50 pins.
Because signals become weaker over distance, cable quality is more impor­tant in large chassis such as the one used in this server.

II. Components

Cables

II. System Components

ATX Power
Connector

Floppy Cable
IDE Cable

(CD-ROM)

68pin Wide SCSI
Cables (SCSI
hard disk drives)

Panel Connectors

Cables from devices

Cable Connections

The cables connect to the motherboard as shown. The P2B-DS includes
onboard SCSI with 68 pin and 50 pin SCSI connectors. RAID connections
require the ASUS PCI-DA2100A RAID card.

Floppy Cable
IDE Cable

ASUS RAID Card:
SCSI Cable Ch. 0

SCSI Cable Ch. 1

Motherboard with all its cables connected

26 AP6000 Hardware Reference Guide

68pin Wide SCSI
Cable for onboard
SCSI

II. System Components

Device Connections

The cables should be connected to the devices as shown. Plastic keepers
protect the cables from contact with the fans; make sure that they are prop­erly secured.

Plastic Keepers

Cables connected to devices

Wide-SCSI Cables

II. Components

Device Connections

AP6000 Hardware Reference Guide 27

III. Power Information

20A 42A4A 13A1.5A

III. Power Information

Power Load Tables

III. Power Info.

Output Regulations

Voltage Out Min(V) Nominal Max(V)
+5.0V 4.800 5.000 5.250
+12.0V 11.400 12.00 12.600

-5.0V -4.500 -5.000 -5.500

-12.0V -10.800 -12.00 -13.200

+3.3V 3.168 3.300 3.432
+5.0V sb 4.750 5.000 5.250

DC Load Requirements

Voltage Out Min(V) Max(V)
+5.0V 1.5 42.00
+12.0V 0.2 10.00

-5.0V 0.0 0.50

-12.0V 0.0 0.75
+3.3V 0.0 18.00
+5.0V sb 0.0 0.50

The maximum combined power of:

• 5.0V and 3.3V is 236W

• 5.0V and 3.3V + 12.0V is 339W

• -5.0V and -12.0V is 9W

Minimum Cross-Loading & Load Range Graph

• For +5V output loads < 4A, the +12V max load shall be limited to 3.5A.

• When the +12V output is at minimum load, the combination of +5V and

+3.3V load will not exceed 100W.

• When +12V output is at the maximum load of 11A, +5V minimum load

should be greater than 8A and 3.3V minimum load should be greater than 3A.

10A

3.5A

0.2A

7A

Working Zone

5A

3A

0A

1.5A

5A 10A 15A 20A 25A 30A 35A 40A

10A

3.5A

0.2A

42A4A 13A

28 AP6000 Hardware Reference Guide

III. Power Information

Power Supply Requirement Calculation Table

Item Volts Amp x Qty. = Total Amp Watts (5V) Watts (12V)

Total Motherboard Power

Hard Drive 5.0V 1.3 x =

12V 1.5 x =

CD-ROM 5.0V x =

12V x =

Tape Drive 5.0V x =

12V x =

Floppy Drive 5.0V x =

12V x =

System Fans 5.0V x =

12V 0.3 x = 0.6 7.2

Other 3.3V x =

209.55 3.6

III. Power Info.

Power Req. Table

Total Power

5.0V x =
12V x =

AP6000 Hardware Reference Guide 29

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