R
AP100
Pentium® II Startup Server
Hardware Reference Guide
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ASUS Contact Information
ASUSTeK COMPUTER INC.
Marketing
Address:
150 Li-Te Road, Peitou, Taipei, Taiwan 112
Telephone: +886-2-2894-3447
Fax:
Email:
+886-2-2894-3449
Technical Support
Fax:
+886-2-2895-9254
BBS:
Email:
WWW:
FTP:
+886-2-2896-4667
ftp.asus.com.tw/pub/ASUS
ASUS COMPUTER INTERNATIONAL
Marketing
Address:
6737 Mowry Avenue, Mowry Business Center, Building 2
Newark, CA 94560, USA
Fax:
+1-510-608-4555
Email:
Technical Support
Fax:
+1-510-608-4555
BBS:
Email:
WWW:
FTP:
+1-510-739-3774
ftp.asus.com.tw/pub/ASUS
ASUS COMPUTER GmbH
Marketing
Address:
Harkort Str. 25, 40880 Ratingen, BRD, Germany
Telephone: 49-2102-445011
Fax:
49-2102-442066
Email:
Technical Support
Hotline:
BBS:
49-2102-499712
49-2102-448690
Email:
WWW:
FTP:
ftp.asuscom.de/pub/ASUSCOM
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Contents
I. Introduction .............................................................7
This Reference Guide ............................................................. 7
Sections .............................................................................. 7
Symbols .............................................................................. 7
This Server .............................................................................. 8
Component Checklist .............................................................. 8
Features .................................................................................. 9
II. System Components ...........................................10
Safety and Warning ............................................................... 10
Static-Sensitive Devices ................................................... 10
Tools Required .......................................................................11
Preparation .............................................................................11
Front View ............................................................................. 12
Chassis Stabilization......................................................... 12
Back View.............................................................................. 13
Chassis Security ............................................................... 13
Side View .............................................................................. 14
Side Panel ............................................................................. 15
Stabilizing Link Bar ........................................................... 15
Motherboard Mounting .......................................................... 16
Panel Connections ................................................................ 16
Front Panel ............................................................................ 17
Device Bay Covers ........................................................... 17
Air Circulation System ........................................................... 18
Fan Replacement ............................................................. 18
System Speaker .................................................................... 18
Device Cage (3.5”) ................................................................ 19
Device Cage (3.5”) Floppy Mounting ................................ 19
Floppy Disk Drive (1.44MB) .............................................. 20
Device Cage (5.25”) .............................................................. 20
CD-ROM Disk Drive.......................................................... 21
Expansion Cards ................................................................... 21
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Contents
SCSI Information ................................................................... 22
SCSI Connections ............................................................ 22
SCSI Termination.............................................................. 22
SCSI ID Jumpers .............................................................. 22
SCSI ID Priority................................................................. 22
Hard Disk Drive Mounting ..................................................... 23
Top of the Power Supply................................................... 23
Ultra2 SCSI Disk Drive ..................................................... 24
External SCSI Terminator ................................................. 24
Device Connections .............................................................. 25
Device Cable Connections ............................................... 25
IDE Cabling....................................................................... 25
Power Supply ........................................................................ 26
Power Supply On and Off ................................................. 26
Power Supply Mounting .................................................... 26
Starting the Server ................................................................ 27
LED Indicators ....................................................................... 27
III. Power Information...............................................28
Power Supply (ST-251HR) .................................................... 28
Input .................................................................................. 28
Output ............................................................................... 28
Protection.......................................................................... 29
Environment...................................................................... 29
Hi-Pole .............................................................................. 29
Certifications ..................................................................... 29
SCSI Cable Limits ................................................................. 30
SCSI Connection Examples .................................................. 31
Glossary ................................................................................ 32
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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.
6
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I. Introduction
I. Introduction
This Reference Guide
You are reading the AP100 Hardware Reference Guide. This hardware ref-
erence guide provides information and procedures on the various compo-
nents 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
This section gives general and startup information and features for this server.
II. Components
This is the main section which gives descriptions of each server component.
III. Power Information
This section gives specifications on the power supply used in this server.
IV. Appendix
This section gives you information to help plan your server.
Symbols
A few symbols are used throughout this guide that you should be aware of
in order to complete certain tasks safely and completely. These symbols
give notes with different degrees of importance.
NOTE: Notes give tips and information to aid in completing a task.
IMPORTANT: Important notices give information that MUST be fol-
lowed in order to complete a task.
CAUTION: Caution notices give information to prevent damage to the
components when trying to complete a task.
WARNING: Warning notices give information to prevent injury to your-
self when trying to complete a task.
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I. Introduction
This Server
The AP100 is a startup server configured on the ASUS P2B-S smart mother-
board which uses the 440BX chipset from Intel which supports the Pentium II
processor and 100MHz front side bus in order to support any complicated task.
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 T-10 Tower
Power Supply:
Motherboard:
CD-ROM Drive:
Floppy Drive:
Cables:
SCSI Terminator:
User’s Manuals:
Drivers/Utilities:
350W ATX
ASUS P2B-S
ASUS 34X
1.44MB
Power, IDE, Floppy, 50&68pin SCSI, CD audio cable
Passive terminator for 68pin SCSI cables.
CD-ROM, SCSI, Motherboard
SCSI, CD-ROM, Motherboard
Required components (you may purchase fromASUS or from a third party)
Processor (CPU):
Memory Modules:
Hard Disk Drives:
(optional Intel Pentium II 233MHz-450MHz)
(optional ASUS 16MB or 32MB SDRAM)
(optional 4/9GB Ultra2 or Fast/Ultra-Wide SCSI)
Optional components (you may purchase fromASUS or from a third party)
Ethernet Card:
(optional ASUS PCI-L101)
NOTE: Optional components are ordered on demand and may not always
be available in the quantities desired.
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I. Introduction
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.
• Intel Pentium II processor provides the highest processing performance
for your server up to 450MHz.
• Four onboard DIMM with up to 1GB EDO or SDRAM with ECC.
• Up to 33MB/Sec IDE transfers with UltraDMA/33 support.
• Intel 440BX supports up to 100MHz front side bus for fast data transfer.
• AGP slot supports an AGP graphics card for fast hardware 3D
acceleratoin.
• Three onboard connectors to independently connect 68 pin Ultra2 SCSI
devices, 68 pin Fast/Ultra-Wide SCSI devices, or 50 pin Fast/Ultra-Nar-
row devices.
• Onboard hardware monitor provides information for system and pro-
cessor voltages, fan speed, temperature, chassis intrusion, and provides
automatic system restart.
• SNMPAgent and Intel LDSM provides server monitoring, management,
and control.
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II. System Components
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.
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II. System Components
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 is also highly recommended.
Preparation
1. Unpack your server, do not connect the power cord.
IMPORTANT: Most servers uses anAT power supply that has a fixed On
and Off switch located on the front. This server uses an 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 forATX 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 padlock if one is used. This server is equipped with a lock-
able panel to prevent unauthorized access. Open the side panel.
3. 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 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: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.
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II. System Components
II. System Components
Front View
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.
Chassis Top Cover
LED Status Indicators
CD-ROM Drive
Empty 5.25” Device
Bays
ATX Power Button
Floppy Disk Drive
Reset Button
Infrared Window
(infrared module
not provided)
Metal Side
Access Panel
Stabilizing Feet
(two on each side,
folded while boxed)
Chassis Stabilization
This four stabilizing feet provides added stability for the tower chassis. Ro-
tate the stabilizing feet outward so that they are perpendicular to the sides of
the chassis as shown above. If the chassis is supported by other structures
such as tables, a wall, or cabinets then use the stabilizing feet that are not
obstructed.
WARNING: Because servers contain many more components compared to
personal computers, servers are much heavier. Stabilization is necessary at
all times to prevent damage and injury from falling over.
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II. System Components
Back View
The back side of the server is provided to show the back exterior compo-
nents of this server.
Top Panel
Top Panel Screw
Air Outlet Vents
Power Supply Fan
Power Supply Switch
Voltage Selection
Power In Connector
PS/2 Keyboard
PS/2 Mouse
Chassis Fan
USB Ports 1 and 2
Serial Ports
COM1 and COM2
Parallel Port
Side Panel Screw
Side Panel Lock
Seven Expansion Slot
Side Panel Lock Close-up
(Pad lock not provided)
Covers
Left Panel
Right Panel
Right Panel Screw
Chassis Security
To protect the server chassis from unauthorized intrusion, the chassis side
panel is lockable using a standard padlock. An optional light detecting sen-
sor connected to the motherboard’s “chassis” connector allows monitoring
of the chassis panels’ open/close status. The motherboard’s onboard hard-
ware monitor can provide alerting and logging that can be managed through
the management software.
NOTE: The right and top panels do not provide access into the system so
therefore this guide will refer to the left panel as “side panel.”
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II. System Components
Side View
The side of the server is provided to show the interior components of this
server. Some of the components illustrated are optional.
Hard Drive
Power Supply
CD-ROM
5.25” Device
Cage
Floppy Drive
3.5” Device
Cage
Hard Disk Drive
Stabilizing
Link Bar
Fan Module
Long Card
Guide
Speaker
Motherboard
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 powered Off .
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II. System Components
Side Panel
The side panel needs to be removed to gain access to the internal system.
Side Panel Removal Procedure:
1. Remove the padlock if one is used on the side panel.
2. Remove the thumb screw on the back of the side panel.
3. Pull the side panel away from the chassis from the back.
4. Pull the bottom of the side panel outward from the bottom.
Thumb screw
location
Removing side panel (Step 2)
Removing side panel (Step 3)
Stabilizing Link Bar
The stabilizing link bar needs to be removed in order to access the mother-
board or remove the 3.5” device cage. To remove the stabilizing link bar,
grasp the bar at the back end with the right hand and with the right thumb
press the back of the chassis toward your fingers (or using the palm of your
left hand, press on the back of the chassis). The bar then releases from the
latch and swings outward.
Grab here and
pull bar outward
Press here with thumb
or other hand
Chassis side interior
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II. System Components
Motherboard Mounting
Once the stabilizing link bar is removed, you can install or replace the moth-
erboard but note the screw locations. All screws are necessary to provide
the needed stabilization to support all the motherboard expansion items.
NOTE: The screw locations will vary with different motherboards.
Motherboard screw locations
Panel Connections
Several wires should be connected to the motherboard for the IDE/SCSI
activity, power, and message indicators on the front panel. Panel connec-
tions also allow for an ATX power button, reset switch, and speaker. Con-
nect the chassis front panel wires as illustrated:
Red (+)
H.D.D. LED
Button Cell Battery
for motherboard
BIOS and clock
White
White (+)
Speaker
Red
White
Black
Black
Violet (+)
White
Violet
Reset SW
Power SW
White
Red (+)
White
Black
Red
Chassis Panel
Connectors
Black
Yellow (+)
White
Green
White
Turbo LED
Power LED
Yellow
White
Green (+)
Connector for Optional Infrared Module
White
Motherboard panel connector
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II. System Components
Front Panel
The front panel needs to be removed to install or remove the device cage
covers for installing or removing devices mounted in the device cages. You
can remove the front panel either in the upright position or flat on its right
panel. Lean the front panel over the edge of a table or book if working
upright. Reach your fingers up into the front panel and pull the front panel
away from the chassis.
Four of your fingers should
fit behind the front panel
Removing the front panel
Device Bay Covers
With the front panel removed, the device bay covers can be removed or
installed.
Device Bay Removal Procedure:
1. With your thumb, push the tab out-
ward against the side of the front
Device bay
cover tab
panel.
2. With your other hand, push the
device cage cover inward from the
front side.
Front panel backside
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II. System Components
Air Circulation System
The server’s air circulation system is comprised of one 3 inch (8 cm) fan mounted
on the inside rear of the chassis and another one mounted on the front of the
chassis, as well as the power supply itself. The air circulation system cools the
internal system by bringing fresh air in from the back and forcing the hot air out
through the front. It is important to keep the air surrounding the hard disk drives
below 122˚F (50˚C) to prevent hard disk failures.
IMPORTANT: The chassis panels must be installed for proper air flow.
Fan Replacement
The two individual fans are secured by plastic housings. The fan housings
can be removed by pressing in the clip and sliding the housing upward.
Press clip with screw driver to release
IMPORTANT: When replac-
ing the fans, be sure that both fans
rotate in the same direction. Use the
manufacturer’s sticker on one side
of the fan as a reference. The air
should flow from the rear of the
chassis to the front of the chassis.
System Speaker
This server has a standard speaker for error notifications and other alerts.
For computer audio capability, an audio card and external speakers are nec-
essary. The standard system speaker mounts in the chassis as shown here.
To remove the speaker, press the metal clip (or pry from front) with a screw-
driver and lift the speaker upward.
Press clip (or pry from front)
with screwdriver to release
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II. System Components
Device Cage (3.5”)
The 3.5” device cage is used for mounting one 3.5” floppy device (such as
a 1.44MB floppy, LS-120, MO, or ZIP disk drive) and two hard disk drives.
Before devices can be installed or removed from the 3.5” device cage, you
must remove the device cage from the chassis.
3.5” Device Cage Removal Procedure:
1. Remove the stabilizing link bar, if not already removed.
2. Rotate the locking lever clockwise using a screwdriver inserted from
the top of the lever. (It is very difficult to turn it with your fingers, it
requires that you pull the lever outward first before turning it.)
3. Slide backward to remove the 3.5” device cage.
4. Mount the 3.5” device cage using the reverse procedure. (Locking the
lever is possible with your fingers.)
Locking lever
Unlocking the 3.5” device cage
Device Cage (3.5”) Floppy Mounting
The 3.5” device cage has a slot and three screw holes on each side for a 3.5”
floppy device on the top most space. The floppy must be aligned so that the
first hole matches.
Align this hole
1.44MB floppy disk drive mounted in the 3.5” device cage
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II. System Components
Floppy Disk Drive (1.44MB)
The 1.44MB floppy disk drive requires signal and power connections. The
power connection is easy since it only fits one way and a latch is available
to secure it when fully inserted. The signal cable is tricky because the cable
fits in both orientations as well as shifted one direction or the other. The
signal cable also has no latch to determine when full insertion is made.
Align the red stripes of the signal and power cables so that they face each
other. Carefully insert the connector while visually watching the progress
so that proper alignment and insertion is made. Be careful, bent pins are
very difficult to straighten.
Red stripe of signal cable
Red stripe of power cable
1.44MB floppy disk drive connections
Device Cage (5.25”)
The 5.25” device cage is used for mounting three 5.25” devices (such as
CD-ROM, tape, or hard disk drives). The 5.25” device cage can be removed
for mounting or unmounting devices. With the 3.5” device cage and front
panel removed, the 5.25” device cage can be pulled out from the chassis.
For proper mounting of your 5.25” device, use this picture as a reference
otherwise trial and error is necessary to make it flush with the front panel
opening. Screw holes are available on each side for securing devices.
5.25” device bay 1
5.25” device bay 2
5.25” device bay 3
5.25” device cage with a CD-ROM in its topmost bay
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II. System Components
CD-ROM Disk Drive
The CD-ROM disk drive mounts only in the 5.25” device cage and requires
signal and power connections like that of IDE hard disk drives. The power
and signal cable is straightforward with connectors designed to only fit cor-
rectly. The red stripe of the signal and power cables should face each other.
NOTE: ACD-ROM audio cable is
also provided in case you install an au-
dio card. The only function of the audio
cable is to allow you to direct the CD
audio out signal to your audio card. Data
signals travel through the IDE cable.
CD audio
output
Red stripe of signal cable
Red stripe of power cable
CD-ROM drive connections
Expansion Cards
Expansion cards can be easily installed just like any standard PC computer.
Up to 4 PCI or 2 ISA (1 slot is shared allowing a maximum of 5 cards at one
time) cards can be installed. One AGP slot is also available for a high-end
graphics card.
Expansion Card Installation Procedure:
1. Follow the static precautions described in the
front of this manual.
2. Switch off your system and all peripheral de-
vices and remove the main power cord.
3. Remove the side panel to the chassis.
4. Find an unused expansion slot on the mother-
board and unscrew the metal cover plate from
the slot and put the screw to one side.
5. Ensure the jumpers (if any) are correctly set on
your expansion card
6. Align the card’s connector with the expansion
slot on the motherboard and gently lower and push the card into the free
slot.
7. Secure the card to the expansion slot with the screw you removed from
the metal plate.
8. Attach cables or wires if necessary.
9. Reinstall the side panel if no other work is needed inside the chassis.
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II. System Components
SCSI Information
SCSI Connections
Your server can support up to 15 user installed single-ended 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 instruc-
tions. Be sure to record all SCSI addresses so that you can prevent SCSI
address conflicts.
SCSI Termination
SCSI devices are connected together in a “chain” by cables. Internal de-
vices connect to the motherboard with a 50 pin or 68 pin flat ribbon cable.
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. SCSI devices normally come
with its termination enabled by jumpers or dip switches. You must disable
these termination for devices in between the SCSI chain. Ultra2 devices do
not have a termination jumper and must be terminated using a terminator on
the SCSI cable. The terminator must always be on the end of the cable
which means that you cannot connect a device on the last connector.
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 motherboard has an onboard 16bit single-channel SCSI chipset. SCSI ID 15
has the highest priority, and SCSI ID 0 has the lowest priority.
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II. System Components
Hard Disk Drive Mounting
Two hard disk drives may be mounted into the 3.5” device cage, a single
hard disk drive may be mounted on top of the power supply, and two more
may be mounted in the 5.25” device cage using hard disk drive carriages
(not provided) designed for use in 5.25” device bays. The exception is
Quantum’s Bigfoot IDE hard disk drive which fits in the 5.25” device bays.
CAUTION: Adequate cooling cannot be made for high-speed SCSI hard
disk drives mounted in the 5.25” device cage, therefore it is not recommended.
Top of the Power Supply
A small hard disk drive carrier plate on top of the power supply is used to
hold a 1” hard disk drive. The underside of the hard disk drive mounts to the
bottom of the carrier plate. There is nothing else to fasten since the side
panel will hold the carrier plate in.
Carrier slides into the
chassis in this direction
Handle faces upward
Hard disk drive mounted on carrier plate
Hard disk drive carrier plate
1” (thick) hard disk drive
Inserting or removing a hard disk drive on
top of the power supply
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II. System Components
Ultra2 SCSI Disk Drive
The Ultra2 SCSI disk drive has separate signal and power connections. The
power connector is the same as standard hard disk drive power. The signal
cable is different. For proper signal stability in Ultra2 speeds, a special twisted
ribbon cable must be used. Each two wires are twisted for signal shielding
like that of high speed (e.g. category 5) LAN cabling.
Red stripe of signal cable
Red stripe of power cable
Ultra2 SCSI hard disk drive connections
External SCSI Terminator
In order to prevent SCSI signal loss, the provided external SCSI terminator
must be used at the end of the 68pin SCSI cable. 50 pin SCSI cables may
also use terminators but usually use termination jumpers on the device it-
self. Currently Wide-SCSI devices have termination jumpers but Ultra2
devices do not. Some manufacturers ship SCSI devices with the terminator
set, others do not. All termination jumpers must be removed when using the
external SCSI terminator.
Ultra2 SCSI ribbon cable terminator
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II. System Components
Device Connections
The following picture shows a completed server example with both stan-
dard and optional components.
Device Cable Connections
The cables connect to the motherboard as shown. The motherboard includes
onboard SCSI with 68 pin and 50 pin SCSI connectors. The provided 68 pin
SCSI cable is designed for Ultra2 SCSI speeds and may be used for both
Wide-SCSI and Ultra2-SCSI devices.
IDE Cabling
Proper IDE device operation requires that the cable does not exceed 18
inches. If only one IDE device is used, connect it to the end of the cable.
Remove unused cables from the IDE connector for proper signal quality
and strength.
IMPORTANT:You must use Ultra2 SCSI ribbon cables for Ultra2 devices.
Ultra2 ribbon cables (may be colored red and white) are similar to wide-
SCSI ribbon cables (normally colored gray) but each pair of wire is twisted
to reduce signal interference.
Device and cabling example
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II. System Components
Power Supply
This server has a standard power supply with specifications to meet this
server’s motherboard requirements. A clearly marked label gives detailed
specifications of the power supply. A power switch is provided to shut off
all voltages, including the standby power. Not all ATX power supplies pro-
vide a power switch and therefore it is normal practice to remove the power
cord before opening the side panel. With the power cord removed, you can
ensure there are no voltages which can cause shorts while installing or re-
moving internal components.
CAUTION: Before turning on your server for the first time, set the power
supply’s voltage. Some products may have auto voltage switching to ac-
commodate 220V-240V or 110-120V but this power supply must be set
manually. The factory default should be on 230V to accommodate the higher
voltage but it is safer to visually inspect the switch yourself in case it is not.
IMPORTANT: For countries using 110V-120V, you must slide the switch
to 115V or else power up is not possible (but no damage will occur).
Power Supply On and Off
Normal powering On and powering Off of the ATX power supply is done
using the momentary ATX power switch located on the front panel which is
connected to the motherboard, unlike AT power supplies which uses a per-
manent switch on the power supply or chassis. The power supply’s main
power switch must be turned on before the ATX power switch on the front
panel will work.
Power Supply Mounting
Mounting and unmounting the power supply must be done from the inside
as shown below. Four screws are used to secure the power supply to the
chassis back side.
Main Power
switch
Voltage switch
Power supply unmounted
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II. System Components
Starting the Server
Turn on the system unit by turning the power knob clockwise and pushing in-
wards momentarily. The power button will snap back because ATX power sys-
tems have an electrical On/Off switch unlikeAT systems which require a perma-
nent On or Off position. If the Power On LED 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. Use the boot diskettes
provided with the server operating system or with MSDOS “FDISK.EXE”.
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 sup-
plied driver diskettes for each device on your server if they are not included
in the operating system setup drivers.
LED Indicators
Three green LED indicators are located on the top of the front panel. When lit,
the “Message” shows the status of the modem, fax, email, or voice mail as
determined by yourACPI OS and software. “Power On” lights when the moth-
erboard receives power from the power supply. “Drive Activity” lights when
there is activity from IDE or SCSI devices connected to the motherboard.
LED indicators on front panel
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III. Power Information
III. Power Information
Power Supply (ST-251HR)
Input
Voltage
Low Range 100VAC
High Range 180VAC
Minimum Nominal Maximum
Frequency
50Hz - 60Hz
50Hz - 60Hz
115VAC
230VAC
132VAC
264VAC
Input Current
Input 115VAC/Max
Input 230VAC/Max
In-Rush Current Max.
Input 115VAC/Max
Input 230VAC/Max
6A (Full Load)
4A (Full Load)
79A (Full Load)
79A (Full Load)
Output
DC Output Cond.: Load (Amp) Min
Nom
7.50
10.0
6.00
0.25
0.25
0.50
Max
15.0
20.0
12.0
0.50
0.50
1.00
Ripple(mV) Noise(mV)
+3.3V*
+5.0V*
+12V
1.5
2.0
1.2
0.0
0.0
0.0
50
100
100
240
200
240
100
50
120
100
120
50
-05V
-12V
+5VSB
(* +3.3V and +5V Total Output Limit: 100W)
Output Rating:
Max
Min
Tolerance
+5V
+12V
+3.3V
-12V
-5V
+5.25V
+4.75V
±5%
+12.60V +3.465V -12.60V
+11.40V +3.135V -11.40V
±5%
-5.25V
-4.75V
±5%
±5%
±5%
Remote On/Off Control: PS-On TTL Low/Close
DC Outputs are to be Enabled
DC Outputs are to be Disabled
PS-Off TTL High/Open
Line Regulation:
Load Regulation:
Cross Regulation:
+3.3V:
+5.0V:
1% Max
1% Max
+3.3V:
+5.0V:
5% Max
5% Max
+5V 20A: 4.75V Min and +12V 1.2A: 12.60V Max
+5V 2A: 5.25V Max and +12V 12A: 11.40V Min
Temperature Arrangements:
Slow Start Time:
1% Max
5ms to 50ms
Power Good Time:
Hold up Time:
100ms to 500ms
20ms Min (at Nominal Input)
1ms Min (at Nominal Input)
Power Fail Time:
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III. Power Information
Protection
Over Power Protection (OPP):
105% to 140%
Over Voltage Protection (OVP): +5V:
5.58V to 6.82V
12.8V to 14.50V
3.7V to 4.80V
+12V:
+3.3V:
Short Protection:
Efficiency:
All outputs shorted to ground are protected.
70% Min
Environment
Ambient Operation Temperature: 0˚C to 50˚C
Ambient Operation Relative Humidity: 20% to 80%
Insulation Resistance:
Input to Ground
Input to Output
50M
50M
Dimension: LxWxH:
150mm x 140mm x 86mm
1.8Kgs
Weight:
Hi-Pole
Input to Output
Input to Ground
1,800VAC
1,800VAC
3Sec
3Sec
Certifications
Approval Date
1997-08-14
1997-08-28
1997-08-28
199X-XX-XX
199X-XX-XX
1997-08-27
1997-09-08
1997-09-03
1997-09-02
Safety Approval
CE (Nemko)
CB
VDE
UL
Certificate Number
9708001E
4052
95325
(pending)
(pending)
199734114
9736061-06
306976
CSA
Nemko
Semko
Demko
Fimko
197014-06
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IV. Appendix
SCSI Cable Limits
SCSI cables have a limit to the length that it may have. Exceeding the length
may cause problems mounting or using any one of the SCSI devices.
CAUTION: Exceeding the SCSI cable limits may cause unreliable data
transfers even if all the devices mount properly.
NOTES:
• Narrow refers to 50 pin and Wide refers to 68 pin. Don’t get confused
from the width of the connector or cable.
• The SCSI ID for devices on one connector cannot be the same as the
SCSI ID for devices on the other connectors. None of the devices on any
connector can use ID7, which is reserved for the SCSI controller.
• A maximum of 15 devices may be connected to the motherboard (three
connectors) at one time. The following “Max Devices” are for individual
connectors and do not take into account other SCSI devices.
Cable Limits
Max Data Transfer Rates
Max Devices
1) 12m (29.4ft) Ultra2-SCSI (68 pin 80MB/Sec)
15
2) 3m - 1.5m
3) 3m (9.8ft)
4) 3m - 1.5m
5) 3m (9.8ft)
Wide Ultra-SCSI (68 pin 40MB/Sec) 4 - 8
Wide-SCSI (68 pin 20MB/Sec)
15
Narrow Ultra-SCSI (50 pin 20MB/Sec) 4 - 7
Narrow Fast-SCSI (50 pin 10MB/Sec) 7
Notes for the above chart:
1) A total of 15 “Ultra2-SCSI” devices (ID0-ID15) may be connected to the 68
pin Ultra2 connector on the motherboard.
NOTE: If connecting Fast/Ultra devices with Ultra2 devices on the Ul-
tra2 connector, the entire SCSI bus will be limited to the Ultra SCSI
conditions listed above. Mixing SCSI devices is highly not recommended.
2) A total of 8 “Wide Ultra-SCSI” devices (ID0-ID15) may be connected to
the 68 pin Wide connector if using a 1.5m (4.9ft) cable, but only 4 “Wide
Ultra-SCSI” devcies if using a 3m (9.89ft) cable. Ultra-SCSI technology
is unstable over long lenghts, therefore stability will depend on they qual-
ity of your cable and devices.
3) Atotal of 15 “Wide-SCSI” devices (ID0-ID15) may be connected to the
68 pin Wide connector.
4) A total of 7 “Narrow Ultra-SCSI” devices (ID0-ID6) may be connected
to the 50 pin Narrow connector when using 1.5m (4.9ft) cable but only 4
devices when using 3m (9.8ft) cable. Ultra-SCSI technology is unstable
over long lenghts, therefore stability will depend on they quality of your
cable and devices.
5) A total of 7 “Narrow Fast SCSI” devices (ID0-ID7) may be connected to
the 50 pin Narrow connector.
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IV. Appendix
SCSI Connection Examples
This is an example of how SCSI devices can be connected to your server.
• Two 9GB Ultra2-SCSI hard disks in the 3.5” cage can be connected to
the Ultra2 connector on the motherboard for 18GB of main storage.
• One Ultra-SCSI tape drive in the 5.25” cage is connected to the 50 pin
narrow connector on the motherboard for routine backups.
• The Wide-SCSI connector on the motherboard can be extended (using
an optional SCSI cable with external bracket) to the chassis slot opening
for connection of an external 4GB Ultra-Wide Hard disk drive and a
Wide-SCSI CD recorder for archives.
68 pin Fast/Ultra-Wide Cable
68 pin Ultra-Wide Hard Disk
(with external casing & power)
68 pin Wide-SCSI CD-R Drive
(with external casing & power)
(Terminated)
IDE Hard Disk Drive
IDE CD-ROM Drive
50 pin SCSI Tape Drive
(Terminated)
50 pin Fast/Ultra-Narrow Cable
68 pin Fast/Ultra-Wide Cable
Terminator
68 pin Ultra2 Hard Disks
68 pin Ultra2 Cable
68 pin external SCSI connector
You must terminate the SCSI cable even if no devices
are connected. Either place a terminator here or remove
the SCSI cable from the motherboard. This holds true for
each unused SCSI cable.
Example of SCSI connections
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IV. Appendix
Glossary
Byte (Binary Term)
One byte is a group of eight contiguous bits. A byte is used to represent a single alphanumeric
character, punctuation mark, or other symbol.
COM Port
COM is a logical device name used by to designate the computer serial ports. Pointing devices,
modems, and infrared modules can be connected to COM ports. Each COM port is configured
to use a different IRQ and address assignment.
CPU (Central Processing Unit)
The CPU, sometimes called “Processor,” actually functions as the “brain” of the computer. It
interprets and executes program commands and processes all the data stored in memory. Cur-
rently, there are socket 7, slot 1, and slot 2 CPUs. Intel Pentium Processors fit on socket 7, Intel
Pentium II fit on slot 1, and Intel Xeon fit on slot 2.
IDE (Integrated Drive Electronics)
IDE devices integrate the drive control circuitry directly on the drive itself, eliminating the
need for a separate adapter card (in the case for SCSI devices). UltraDMA/33 IDE devices can
achieve up to 33MB/Sec transfer.
LPT Port (Line Printer Port)
Logical device name reserved by DOS for the computer parallel ports. Each LPT port is con-
figured to use a different IRQ and address assignment.
PCI Bus (Peripheral Component Interconnect Local Bus)
PCI bus is a specification that defines a 32-bit data bus interface. PCI is a standard widely used
by expansion card manufacturers.
Peripherals
Peripherals are devices attached to the computer via I/O ports. Peripheral devices allow your
computer to perform an almost limitless variety of specialized tasks.
POST (Power On Self Test)
When you turn on the computer, it will first run through the POST, a series of software-controlled
diagnostic tests. The POST checks system memory, the motherboard circuitry, the display, the
keyboard, the diskette drive, and other I/O devices.
PS/2 Port
PS/2 ports are based on IBM Micro Channel Architecture. This type of architecture transfers
data through a 16-bit or 32-bit bus. A PS/2 mouse and/or keyboard may be used on ATX
motherboards.
RAID (Redundant Array of Inexpensive Disks)
RAID can be set up to provide mirroring (for fault tolerance), parity (for data guarding), or
striping (for data distribution over several drives for increased performance). A RAID card is
required to setup a RAID system.
RAM (Random Access Memory)
There are several different types of RAM such as DRAM (Dynamic RAM), EDO DRAM (Ex-
tended Data Out DRAM), SDRAM (Synchronous DRAM).
ROM (Read Only Memory)
ROM is nonvolatile memory used to store permanent programs (called firmware) used in cer-
tain computer components. Flash ROM (or EEPROM) can be reprogrammed with new pro-
grams (or BIOS).
SCSI (Small Computer System Interface)
High speed parallel interface defined by the X3T9.2 committee of theAmerican National Stan-
dards Institute (ANSI) for connecting many peripheral devices.
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