Asus AP7500 Operating and maintenance manual

R
AP7500
Pentium®II Corporate Server
Hardware Reference Guide

AP7500 Hardware Reference Guide
2
User’s Notice
No part of this manual, including the products and software described in it, may be
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any language in any form or by any means, except documentation kept by the pur-
chaser for backup purposes, without the express written permission of ASUSTeK
COMPUTER INC. (“ASUS”).
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TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABIL-
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AGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSI-
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LIKE), EVEN IFASUS HAS BEENADVISED OF THE POSSIBILITYOF SUCH
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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 regis-
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• Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation.
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Theproductnameandrevisionnumberarebothprintedontheproduct itself. Manual
revisions are released for each product design represented by the digit before and
after the period of the manual revision number. Manual updates are represented by
the third digit in the manual revision number.
For previous or updated manuals, BIOS, drivers, or product release information,
contactASUS at http://www.asus.com.tw or through any of the means indicated on
the following page.
SPECIFICATIONSANDINFORMATION CONTAINED INTHIS MANUALARE
FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO
CHANGE ATANY TIME WITHOUT NOTICE,AND SHOULD NOT BE CON-
STRUED AS A COMMITMENT BYASUS. ASUS ASSUMES NO RESPONSI-
BILITYOR LIABILITY FORANYERRORS OR INACCURACIES THAT MAY
APPEARINTHIS MANUAL, INCLUDINGTHEPRODUCTSANDSOFTWARE
DESCRIBED IN IT.
Copyright © 1998 ASUSTeK COMPUTER INC. All Rights Reserved.
Product Name: AP7500
Manual Revision: 1.00 E280
Release Date: September 1998

AP7500 Hardware Reference Guide 3
ASUS Contact Information
ASUSTeK COMPUTER INC.
Marketing
Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112
Telephone: [phone]
Fax: [phone]
Email: [email protected]
Technical Support
Fax: [phone]
BBS: [phone]
Email: [email protected]
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: [email protected]
Technical Support
Fax: [phone]
BBS: [phone]
Email: [email protected]
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: [email protected]
Technical Support
Hotline: [phone]
BBS: 49-2102-448690
Email: [email protected]
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

AP7500 Hardware Reference Guide
4
Contents
I. Introduction .............................................................7
This Reference Guide ............................................................. 7
Sections .............................................................................. 7
Symbols .............................................................................. 7
This Server .............................................................................. 8
Component Checklist .............................................................. 8
Features .................................................................................. 9
Safety and Warning ............................................................... 10
Static-Sensitive Devices ................................................... 10
Tools Required .......................................................................11
Preparation.............................................................................11
II. System Components ...........................................12
Server Front Side .................................................................. 12
Server Back Side................................................................... 13
Chassis Security ............................................................... 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
SCSI Backplane .................................................................... 22
SCSI Board Placement..................................................... 22
SCSI ID Setting................................................................. 23
SCSI ID Dip Switches ....................................................... 23

AP7500 Hardware Reference Guide 5
Contents
SCSI Information ................................................................... 24
SCSI Connections ............................................................ 24
SCSI Termination.............................................................. 24
SCSI ID Jumpers .............................................................. 24
SCSI ID Priority................................................................. 24
Device Cables ....................................................................... 25
Cable Connections ........................................................... 25
Device Connections.......................................................... 26
Floppy Disk Drive (1.44MB).............................................. 27
IDE Cabling....................................................................... 27
CD-ROM Disk Drive (IDE) ................................................ 27
Ultra2 SCSI Disk Drive ..................................................... 28
External Ultra2 SCSI Terminator....................................... 28
Expansion Cards ................................................................... 28
Power Supply ........................................................................ 30
Power Supply Mounting.................................................... 30
Power Module Rating ....................................................... 31
Power Module Failure....................................................... 31
Starting the Server ................................................................ 32
LED Indicators....................................................................... 32
III. Appendix ..............................................................33
SCSI Cable Limits ................................................................. 33
Power Supply Information ..................................................... 34
Input Voltage..................................................................... 34
Input Current..................................................................... 34
Output Current Capacity ................................................... 34
Output Voltage Regulation, Ripple, and Noise ................. 34
Regulatory Information .......................................................... 34
Safety................................................................................ 34
EMI ................................................................................... 34
Power Supply Requirement Calculation Table ...................... 35
Glossary ................................................................................ 36

AP7500 Hardware Reference Guide
6
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 interfer-
ence 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 com-
munications. However, there is no guarantee that interference will not oc-
cur in a particular installation. If this equipment does cause harmful inter-
ference to radio or television reception, which can be determined by turn-
ing 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.
IMPORTANT! The use of shielded cables for connection of the moni-
tor to the graphics card is required to assure compliance with FCC regu-
lations. 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 Regula-
tions of the Canadian Department of Communications.

AP7500 Hardware Reference Guide 7
I. Introduction
Sections / Symbols
This Reference Guide
You are reading the AP7500 Hardware Reference Guide. This hardware
reference guide provides information and procedures on the various com-
ponents used in this server. Some components shown in this reference guide
are optional and may be individually purchased to complete this server.
This guide is intended for experienced users and integrators with hardware
knowledge of personal computers. You should also read all documentation
and manuals included with this server and with your separately purchased
components.
Sections
There are only a few sections in this reference guide as follows:
I. Introduction
Thissection gives generaland startup informationand features forthis server.
II. Components
This is the main section which gives descriptions of each server component.
III. Appendix
This section gives you additional information to help plan your server.
Symbols
A few symbols are used throughout this guide that you should be aware of
to complete certain tasks safely and completely.These symbols indicate the
degree of importance of a procedure or information.
NOTE: Tips and information to aid in completing a task.
IMPORTANT: Information that MUST be followed in order to com-
plete a task.
CAUTION: Information to prevent damage to the components when
trying to complete a task.
WARNING: Information to prevent injury to yourself when trying to
complete a task.
I. Introduction

8 AP7500 Hardware Reference Guide
I. Introduction
Checklist
This Server
The AP7500 is a corporate server configured on the ASUS P2B-D2 smart
motherboard which uses the 440BX chipset from Intel which supports the
Pentium II processor and 100MHz front side bus in order to support even
the most complicated server tasks.
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 hav-
ing to hunt down components. The following checklist provides a guideline
as to the necessary components for a server.
Standard components
Chassis: ASUS AS-50 Tower
Power Supply: Redundant 400WATX
Motherboard: ASUS P2B-D2
CD-ROM Drive: ASUS 40X
Floppy Drive: 1.44MB
Cables: Power, IDE, Floppy, 50&68pin SCSI, CD audio cable
SCSI Terminator: Passive terminator for 68pin SCSI cables.
User’s Manuals: CD-ROM, SCSI, Motherboard, Hardware Guide
Drivers/Utilities: SCSI, CD-ROM, Motherboard
Requiredcomponents(you may purchase fromASUSor from athird party)
Processor (CPU): (optional Intel Pentium II 233MHz-450MHz)
Memory Modules: (optional ASUS 16, 32, 64, 128MB SDRAM)
Hard Disk Drives: (optional 4/9GB Ultra2 or Fast/Ultra-Wide SCSI)
Optionalcomponents(you may purchase fromASUS or from a third party)
Ethernet Card: (optional ASUS PCI-L101)
RAID Card: (optional ASUS PCI-DA2100A)
I. Introduction

AP7500 Hardware Reference Guide 9
I. Introduction
Features
Features
The following are highlights to this server’s many features. For additional
features and details, read the motherboard User’s Manual included with this
server package.
•Processor: Dual Intel Pentium II processors provide up to 450MHz on
each processor for extreme server processing speeds.
•Memory:Four DIMM slots with upto 1GB EDO or SDRAMwith ECC.
•Onboard IDE: Up to 33MB/sec IDE transfer with UltraDMA/33.
•Chipset: Intel 440BX supports up to 100MHz front side bus.
•Onboard VGA: Onboard S3 Trio64V2/DX with 1-2MB memory.
•Onboard LAN: Onboard Intel 10/100Base-TX Fast Ethernet.
•Onboard SCSI: Three onboard connectors to independently connect
68-pin Ultra2 SCSI devices, 68-pin Wide-SCSI devices, and 50-pin Nar-
row-SCSI devices.
•SCSI Backplane: Wide-SCSI backplane with remote SCSI ID dip
switches and power to support up to 8 wide-SCSI hard disk drives.
•Redundant Power: Dual 400W current-sharing power modules pro-
vide added life and increased up-time for your server.
•Device Bays: Support one floppy, one CD-ROM, two additional fixed
devices, and eight hot-swap hard disk drives.
•Onboard Hardware Monitor: Provides information for system and
processor voltages, fan speed, temperature, chassis intrusion, and pro-
vides automatic system restart.
•SNMPAgent and Intel LDSM: Provides server monitoring, manage-
ment, and control.
I. Introduction

10 AP7500 Hardware Reference Guide
I. Introduction
Safety and Warning
Safety and Warning
Observe the following safety instructions any time you are connecting or
disconnecting devices to the workstation.
WARNING: 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 pre-
vent a possible shock from touching two surfaces with different electrical
potentials.
During an electrical storm, do not connect cables for display stations, print-
ers, telephones, or station protectors for communications lines.
To prevent electrical shock hazard, disconnect the power cable from the
electrical outlet before relocating the system.
WARNING: 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 prop-
erly grounded electrical outlet to avoid electrical shock.
Static-Sensitive Devices
CAUTION: Motherboards, adapters, and disk drives are sensitive to static
electricity discharge. These devices are wrapped in antistatic bags to prevent
this damage. Take 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 anti-
static bag and the metal frame of the system unit at the same time.
• Handle the devices carefully in order to prevent permanent damage.
I. Introduction

AP7500 Hardware Reference Guide 11
I. Introduction
Tools / Preparation
I. Introduction
Tools Required
A few items are needed to install or remove the components in this server.
• Phillips (cross) screwdriver
• Standard (flat) screwdriver
• Antistatic wrist strap
Preparation
1. Unpack your server, do not connect the power cord.
IMPORTANT: Most servers use anAT power supply that has a fixed ON
and OFF switch located on the front. This server uses anATX 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 forATX power supply
features to work, and therefore removing the power cord is necessary to
prevent electrical shocks when working on the server components.
2. Unlock the padlock if one is used. This server is equipped with a lock-
able panel to prevent unauthorized access. Open the side panel.
3. Install finalservercomponents such as CPU,Memory, Hard DiskDrives,
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 tele-
communications/telephone cables into the network RJ45 connector in
the server if one is installed.
8. Set the power supply input voltage to either 115V for 110V-120V areas
or 130V for 120V-140V areas.
CAUTION: The voltage must be set correctly or damage may occur.
9. Connect the included power cord to the server’s power supply.
10.Connect the server to a grounded (three pronged)AC power source such
as a UPS or power strip (preferably with surge protection).
WARNING:Thisserveris designedforconnectionto agrounded(earthed)
outlet.Toreducethe riskofelectricalshock ordamagetoyour server, donot
bypass the grounding plug.

12 AP7500 Hardware Reference Guide
II. Components
Server Front Side
Server Front Side
The front side of the server is provided to show the front exterior compo-
nents of this server. The chassis is made of strong rust-resistant metal and
covered with a protective ivory surfacing.
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 that are plugged into anAC outlet always
have standby power even when the server is powered OFF.
Server front side
Floppy Drive
ATX Power Button
Fixed Device Bays
(empty)
Metal Door Lock
Stabilizers with wheels
Metal Security Door
Hot Swap Tray
CD-ROM Drive
Metal Side Access Panel

AP7500 Hardware Reference Guide 13
II. Components
Server Back Side
Server Back Side
The back side of the server is provided to show the back exterior compo-
nents of this server.
II. System Components
Chassis Security
To protect the server chassis from unauthorized intrusion, the chassis side
panels and front panel can be locked with the built-in keylock. Chassis in-
trusion switches can be connected to the motherboard’s “chassis” connector
to allow monitoring of the chassis side panels’ open/close status. If either
one or both of the side panels are opened, the motherboard’s onboard hard-
ware monitor can provide alerting and logging with the provided manage-
ment software.
Redundant Power
Supply
AC Power In
Connector
Parallel Port
PS/2 Keyboard
Serial Port COM1
PS/2 Mouse
Power Supply Fan
USB Ports 1 and 2
Circulation System
Outlet Vents
Intrusion Switch
(inside)
Intrusion Switch
(inside)
Server back side
Voltage Input Switch
VGA Connector
LAN Connector

14 AP7500 Hardware Reference Guide
II. Components
Chassis Panels
Chassis Panels
There are two identical side panels on the chassis, one on each side. Each
panel is secured by two screws on the back of the server (circled below) and
also by a CAM. The CAM has a rotating knob with its own keylock.Turn 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. System Components
Left side panel
Side Panel Screw
Left Side Panel
Left Panel Knob
Fan Module
Server left side
Pentium II processors
SCSI RAID Card
Redundant Power
Supply Frame
Intrusion Switch

AP7500 Hardware Reference Guide 15
II. Components
Circulation System
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 push-
ing. The handle must be in the out position to insert the fan module. The
individual fans are secured by two clips and two hooks.To 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 replace-
ment. 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.
Removing or inserting the fan module
Release Handle
Fan Module
Air Inlet Vents (along
full length of door)
II. System Components
Fan module
Release Handle
Fan 1
Fan 2
Fan 3
Fan 4
Fan 5
Control Board
Fan removal (module’s reverse side)
When replacing fans, be sure that
the fan rotations are in the same
direction.Usethemanufacturer’s
sticker on one side of the fan as a
reference as to the correct side.
Air flows from the front of the
server to the rear.

16 AP7500 Hardware Reference Guide
II. Components
Fixed Storage Devices
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 de-
vices. There are six screws provided (as circled) for mounting a 4 inch de-
vice such as a floppy or hard disk drive. Four screws are provided (as boxed)
for mounting a 6 inch device such as a CD-ROM or tape drive.
Fixed Device Bay Cover
After releasing the device bay cover clips, pry the cover away from the
chassis using a screw driver from the front.
Fixed Device Bay Cover Clips
The device bay panel is held by two plastic clips on each side. Press these
clips in with a screwdriver to release.
Removing the device bay cover clips
Internal Fixed Storage Device Tray
Removing the device bay cover
Fixed storage device tray
II. System Components

AP7500 Hardware Reference Guide 17
II. Components
Floppy / CD-ROM
Fixed Storage Devices
Floppy Drive and CD-ROM
The floppy drive fits in the topmost bay along with the power button.ACD-
ROM 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
inward to release the clips. The tray slides in or out on the side rails.
IMPORTANT: If using an IDE hard disk drive in this large chassis, it is recom-
mended 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 SETUPfor a more stable IDE operation.
Removing a floppy or CD-ROM drive
Floppy drive with spacer CD-ROM with spacer
Floppy and CD-ROM drives
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 Fixed Device Spacer
Floppy and CD-ROM drive spacers
II. System Components

18 AP7500 Hardware Reference Guide
II. Components
Hot-SwapTrays
Hot-Swap Trays
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 replacement. To remove the tray, unlock the tray and pull on the handle.
Alock secures the handle and switches on or off the power to the hard drive.
Hot-Swap Tray 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.Two LEDs provide information on the power and activ-
ity 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 transferred.
Removing or inserting the hot-swap tray
Hot-Swap Tray (8 Total)
Lock/
Power
On
Unlock/
Power Off
Hot-Swap Tray Keylock Positions
Hot-swap tray face plate
Keylock / Power Switch
Power LED (PLED)
Activity LED
(SLED)
Release / Transport
Handle
Air
Inlet
II. System Components

AP7500 Hardware Reference Guide 19
II. Components
Hot-Swap Tray
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 con-
nector 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.
Hot-Swap Tray Usage
Each hot-swap tray provides an aluminum carrier for a single SCSI hard
disk drive 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.
Hot-swap tray SCSI ID & activity LED wires connected (Seagate HD)
1248
Activity
Signal
Blue Black
White
Yellow
Green Brown
Red
Red
Black
Orange
SCSI Address (ID#)
Pin 1
Unused
Seagate Cheetah (ST34501W) side opposite power & SCSI
Pin 2
II. System Components
Hot-swap tray and its connectors
SCSI Cable
Power Connector
Activity LED
(ALED)
SCSI ID
Aluminum Tray
Screw Holes

20 AP7500 Hardware Reference Guide
II. Components
Hot-Swap Connector
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 combines all the signal
and power into one docking connector for a simple hot-swap unit.
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 tray’s front panel 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.
Hot-swap tray connector board parts
Hard Disk Drive
Power Connector
Wide SCSI
Connector
Hot-Swap Tray
Docking Connector
KEY ALED_IN
(not used) SCSI_ID
SLED
(not used) PLED
Hot-swap tray rear connections (Seagate HD)
KEY PLED SCSI_ID Power
from hard disk drive’s 2 pin
activity LED (ALED wire)
from tray’s front panel 3 pin
activity LED (SLED wire)
Green
Black
Red
SLED
(wire)
Red
Black
ALED
(wire)
Bridge
Connector Bridge for LED
II. System Components