ASUS AR1000 User Manual

AR1000 RAID Subsystem

Hardware Reference Guide

User's Notice

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Copyright © 1999 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: AR1000
Manual Revision: 1.00 E366
Release Date: May 1999

2 AR1000 RAID Subsystem Hardware Reference Guide

ASUS Contact Information

ASUSTeK COMPUTER INC. (Asia-Pacific)

Marketing

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

Technical Support

Tel (English): [phone] ext. 706
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WWW: www.asus.com.tw
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ASUS COMPUTER INTERNATIONAL (America)

Marketing

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

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

Technical Support

Fax: [phone]
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Email: [e-mail]
WWW: www.asus.com
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ASUS COMPUTER GmbH (Europe)

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

AR1000 RAID Subsystem Hardware Reference Guide 3

Contents

I. Introduction

1-1. How this Manual is Organized .............................. 7

Symbols ......................................................... 7

1-2. Component Checklist............................................ 8

Standard components.................................... 8

1-3. Features................................................................ 9

1-4. Safeguards...........................................................11

Operation Safety...........................................11

Tools Required..............................................11

1-5. Electrical Safety .................................................. 12

Static-Sensitive Devices .............................. 12

II. System Components

2-1. System Front Side .............................................. 13

2-2. System Back Side............................................... 14

2-3. System Left Side................................................. 15

2-4. Opening the Chassis........................................... 16

Removing/Installing the Front Door ............. 16

Side Panel Screws....................................... 16

Opening/Installing the Left Panel................. 16

2-5. Installation of DA3000 RAID Controller............... 17

Opening the Top Panel ................................ 17

Installing DRAM SIMM................................. 17

Fixed Storage Device Tray .......................... 18

Fixed Device Spacer.................................... 18

2-6. Front Panel of DA3000 RAID Controller ............. 19

Front View.................................................... 19

2-7. Hot-Swap SCA Hard Drive Modules ................... 20

Hot-Swap Tray............................................. 21

Hot-Swap Bay.............................................. 21

2-8. Front Cooling Fans ............................................. 22

Front Cooling Fan Control Board................. 23

Hard Disk Drive Message Board ................. 23

2-9. SCSI Backplane.................................................. 24

4 AR1000 RAID Subsystem Hardware Reference Guide

Contents

2-10. SCSI ID Setting................................................. 25

SCSI ID Dip Switches.................................. 25

2-11. SCSI Termination .............................................. 26

2-12. SCSI Cabling-1 (Default) .................................. 27

2-13. SCSI Cabling-2 ................................................. 28

2-14. SCSI Cabling-3 ................................................. 29

2-15. Power Supply.................................................... 30

Power Supply Placement............................. 30

Replacing One Power Supply Module......... 30

Removing the Entire Power Supply Unit...... 30

Power Module Rating .................................. 31

Power Module Failure.................................. 31

2-16. Power Supply Information................................. 32

AR1000 RAID Subsystem Hardware Reference Guide 5

(This page was intentionally left blank.)

6 AR1000 RAID Subsystem Hardware Reference Guide

I. Introduction

You are reading the AR1000 RAID Subsystem Hardware Reference Guide.
This guide provides information on the various components used in this
system. 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 system and with your separately
purchased components.

•

1-1. How this Manual is Organized

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 system.

II. System Components

This section gives descriptions of each system component..

Sections

I. Introduction

I. Introduction

Symbols

To complete certain tasks safely and completely, you should be aware of a
few symbols used throughout this guide.

WARNING: Information to prevent injury to yourself when trying to
complete a task.

CAUTION: Information to prevent damage to the components when
trying to complete a task.

IMPORTANT: Information that MUST be followed in order to com­plete a task.

NOTE: Tips and information to aid in completing a task.
PHILIP (CROSS) SCREW DRIVER: Tools required to install or

remove the components in this system.
STANDARD (FLAT) SCREW DRIVER: Tools required to install

or remove the components in this system.

STEP: Actions to complete a task.

AR1000 RAID Subsystem Hardware Reference Guide 7

I. Introduction

I. IntroductionI. Introduction

Checklist

• 1-2. Component Checklist

If assembling this system by yourself, it is important to prepare all the 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 RAID system.

Standard components

ASUS DA3000 RAID Controller
ASUS D-30 chassis
Redundant AT Power Supply
SCSI Cables and Terminators
Hardware Reference Guide
DA3000 User’s Manual
SIMM Memory Modules
80-pin SCSI Hard Disk Drives

8 AR1000 RAID Subsystem Hardware Reference Guide

I. Introduction

• 1-3. Features

AR1000 is a RAID subsystem configured on the DA3000 RAID controller,
which supports up to 5 drive channels accommodating many hard drives
configurations for optimal fault tolerance and performance. The following
are highlights to this system’s many features. For additional features and
details, read the user’s manual of the RAID controller included with this
package.

DA3000 RAID Controller

• Uses AMD 5x86-133 CPU

• Supports Ultra2/Ultra-Wide SCSI device interface

• Up to 128 MB of intelligent Read-Ahead/Write-Back cache memory

• Six operating modes: Non-RAID, RAID-0, RAID-1, RAID-0+1, RAID-

3, and RAID-5

• SAF-TE support

• Automatic bad sector reassignment

• Background rebuilding

• Global and local spare drive operation

• Provides up to 5 drive channels, each supporting 15 SCSI IDs

• Connects up to 8 logical drives, each with independent RAID modes

• Front panel LCD and RS-232 terminal interface for display and configuration

Features

I. Introduction

I. Introduction

System Management Tools

• TEXT RAID Manager operating under DOS/NT/NetWare

• GUI RAID Manager

Chassis

• One 5.25” device tray for the DA3000 RAID controller; two hot-swap

SCA hard disk drive modules

• Four foldable chassis stabilizers

• Metal door lock

• Front panel removable for rack mounting

• 19” rack compliant

Device Bay

• Holds up to six 1.6” or ten 1.0” hot-swap trays for Ultra2 SCSI SCA hard

disk drives

• Power LEDs to indicate power and fan status

AR1000 RAID Subsystem Hardware Reference Guide 9

I. Introduction

I. IntroductionI. Introduction

Features

Circulation System

• Two 3-inch (8 cm) ball bearing fans for the system

• Four 2-inch (6 cm) ball bearing fans for device trays

• Device trays made of aluminum to facilitate heat dissipation

Power Supply

• Redundant power supply

• Input voltage: 115/230V (autoranging)

• Output current: 5V, 40A; 12V, 12A; -5V, 0.5A; -12V, 0.5A

• Total output Watts: 350W

Size and Weight

• Chassis: 62.5cm (L) x23cm (W) x 45.5cm (H)

• Carton: 76cm (L) x 36cm (W) x 62cm (H)

• Weight: 50kgs (including chassis, DA3000, power supply, hot-swap
trays and 10 hard disk drives)

10 AR1000 RAID Subsystem Hardware Reference Guide

I. Introduction

• 1-4. Safeguards

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

Operation Safety

IMPORTANT

• Any operation on this system must be conducted by certified
or experienced persons.

• Before operating your system, carefully read all the manuals
included with the system package.

• Before using the system, make sure all cables are correctly
connected and the power cables are not damaged. If any dam­age is detected, contact the vendor as soon as possible.

• To avoid short circuits, keep paper clips, screws, and staples
away from connectors, sockets and circuitry.

• Before opening the chassis panels, make sure all power cables
are unplugged.

• Avoid dust, humidity, and temperature extremes. Place the
system on a stable surface.

• If the power supply is broken, do not try to fix it by yourself.
Contact an authorized vendor .

Safeguards

I. Introduction

I. Introduction

• It is recommanded that you wear gloves when assembling or
dissembling the system to protect from cuts and scrapes.

• When the system is powered on, the surfaces of certain IC
devices may be hot. Do not touch them. Check whether the
fans are functioning properly.

Tools Required

A Phillips (cross) screwdriver and a standard (flat) screwdriver are needed
to install or remove the components in this system.

AR1000 RAID Subsystem Hardware Reference Guide 11

I. Introduction

I. Introduction

Electrical Safety

• 1-5. Electrical Safety

IMPORTANT

• Before installing or removing signal cables, ensure that the
power cables for the system unit and all attached devices are
unplugged.

• T o prevent electrical shock hazard, disconnect the power cable
from the electrical outlet before relocating the system.

• 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.

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

IMPORTANT

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 antistatic bag and the metal frame of the
system unit at the same time.

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

12 AR1000 RAID Subsystem Hardware Reference Guide

II. System Components

• 2-1. System Front Side

1
2

3

Front Side

II. Components

4

1. AT Power Button

2. DA3000 RAID Controller

3. Hot-Swap Trays for SCA Hard Disk Drives

4. Side Panel Thumb Screws

5. Hot-Swap Trays for SCA Hard Disk Drives

6. Chassis Stabilizers

5

6

System Front Side

AR1000 RAID Subsystem Hardware Reference Guide 13

• 2-2. System Back Side

II. Components

Back Side

II. System Components

1
2

3

4

5

1. Top Panel Screws

2. RS-232 Ports

3. SCSI Ports

4. System Fans

5. Power Supply Switches

6. AC Power In Connector

7. Monitor Power Connector

8. Chassis Stabilizer

9. Power Supply Alarm Reset Button

6
7

8
9

System Back Side

14 AR1000 RAID Subsystem Hardware Reference Guide

II. System Components

• 2-3. System Left Side

1

2

Back SideBack Side

II. Components

Left Side

3

4

1. SCSI Cable

2. System Fan

3. Redundant Power Supply

4. Chassis Stabilizer

II. Components

System Left Side

AR1000 RAID Subsystem Hardware Reference Guide 15

• 2-4. Opening the Chassis

This section and the following sections give descriptions on how to install
and remove components. When setting up devices on the system, perform
the following steps.

Opening the Chassis

II. Components

II. System Components

Removing/Installing
the Front Door

To remove the front door, push
down on the hinge spring as
shown.

T o install the front door, press the
hinge spring, insert the door pins
into the holes on the top and bot­tom panels, and then release the
hinge spring.

Leaving some space for pushing the
left panel in place

Side Panel Screws

There are two identical side pan­els on the chassis, one on each
side. The side panels are secured
by two large thumb screws on the
front of the system, which can be
turned with your fingers.

Opening/Installing
the Left Panel

T o open the left side of the panel,
remove the side panel screw , and
then pull the handle outward
while pulling the panel forward.

T o install the left panel, first place
the back of the panel onto the
chassis, leaving a gap of about 1
cm between the left and back pan­els. Push the panel front inward
and then slide it backward.

16 AR1000 RAID Subsystem Hardware Reference Guide

16

II. System Components

• 2-5. Installation of DA3000 RAID Controller

Opening the Top

T op Panel of DA3000

The top panel of the DA3000
RAID controller is secured by
four screws, two on each side (as
circled). To install the DRAM
SIMM, open the top panel by
removing the four screws.

Panel

DA3000 Installation

II. Components

72-Pin DRAM in SIMM Socket

Clip

Mounting Hole

Plastic Safety Tab (This Side Only)

Mounting Hole

Installing DRAM SIMM

The DA3000 RAID controller is equipped with two SIMM sockets. A mini­mum of 8 MB of DRAM in one SIMM is required for it to operate.

SIMM Memory Installation Procedures:

1. The SIMM memory modules will fit in only one orientation as shown
because the plastic safety tab on one end of the SIMM socket requires the
notched end of the SIMM memory modules.

2. Press the memory module firmly into place starting from a 45-degree angle,
making sure that all the contacts are aligned with the socket.

3. With your fingertips, rock the memory module into a vertical position so
that it clicks into place. The plastic guides should go through the two
mounting holes and the clips should snap.

To release the memory module, push both clips outward and rock the
module out of the clips.

AR1000 RAID Subsystem Hardware Reference Guide 17

II. System Components

Fixed Storage
Device Tray

The DA3000 is mounted on a re­movable tray, secured by four
screws (as circled).

II. Components

DA3000 Installation

A metal clip on each side of the
device tray (as pointed to) secures
the tray in place. To release the
tray , press these clips in with your
fingers .

Fixed Device
Spacer

Insert the device tray along with
the DA3000 into the device bay.
Cover it with a spacer to com­plete the installation.

Fixed Device Spacer

18 AR1000 RAID Subsystem Hardware Reference Guide

II. System Components

• 2-6. Front Panel of the DA3000 RAID Controller

The front panel of the DA3000 RAID controller consists of an LCD dis­play, keypad and status LEDs, which allow you full access to status infor­mation and complete control of the RAID operation.

For configuration and operation on the DA3000 RAID controller, refer to
its User’s Manual.

POWER

BUSY

ATTEN

ENT ESC

LCD

Front View

LEDs/Keys Function Description
POWER Lights when the controller receives power form the power supply
BUSY Flashes when data is being accessed; dims when there is no

activity; lights when there is unprocessed data stored in cache
memory

A TTEN Lights when an error occurs or the controller needs attention

II. Components

Front Panel of DA3000

Scrolls upward or downward through available options

ENT Brings up a selection or executes an option
ESC Returns to the previous menu or cancels a selection

AR1000 RAID Subsystem Hardware Reference Guide 19

• 2-7. Hot-Swap SCA Hard Drive Modules

Maximum uptime in a system requires devices that can be easily replaced
or “swapped.” The main hard drives are mounted in internal hot-swap trays
for easy replacement. The AR1000 hot-swap bay has two different models:
Five-tray hot-swap bay and three-tray hot-swap bay. The 1.0 inch SCA
hot-swap bay can accommodate five 1.0 inch hard disk drives. The 1.6 inch
SCA hot-swap bay can accommodate three 1.6 or 1.0 inch hard disk drives.

II. Components

Hot-Swap Bay

Five-T ray Hot-Swap Bay

II. System Components

LEDs

Hot-Swap Bay

Three-Tray Hot-Swap Bay

Levers

LEDs
Green: Power LED
Yellow: Hard Disk Access LED
Red: Hard Disk Status LED (reserved)
(For details about LEDs, see p. 23.)

LEDs

Levers

IMPORT ANT

The SCA hot-swap tray only supports 80-pin SCA SCSI hard disk
drives.

20 AR1000 RAID Subsystem Hardware Reference Guide

II. System Components

Hot-Swap Tray

1

2

3

4

5

Hot-Swap Bay

II. Components

There are two levers on the front of the hot-swap tray to help release or lock
the tray. To remove the tray, extend both levers and pull on both levers. To
install the tray, push the tray firmly into the bay with the levers extended,
then close the levers.

Hot-Swap Bay

Hot-Swap Bay

To remove the hot-swap bay, first release the front cooling fans first by
pressing the eject mechanism with a small screwdriver. Remove the six
retaining screws as circled above and then the entire hot-swap bay can be
slid out of the chassis.

AR1000 RAID Subsystem Hardware Reference Guide 21

II. System Components

• 2-8. Front Cooling Fans

The front cooling fan module consists of a control board, a hard disk drive
LED status board, and two cooling fans. The message LED board mounted
in the front of the cooling fan module consists of five sets of LEDs to repre­sent the status of up to five hard disk drives. Each set has three LEDs which
can show the power, activity, and status of each hard disk drive.

II. Components

Front Cooling Fans

The front cooling fans’ main purpose is to cool the hard disk drives. There
are two individual 2 1/4 inch (6 cm) fans secured by four screws on each
fan. These fans can be removed by using a small screwdriver to push the
eject mechanism in the fan module. (See page 21.)

Lower Fan

Front Cooling Fan Control Board
(mounted with the component side
facedown)

ß‚§‚

Upper Fan

Hard Disk Drive Message Board (LEDs)

IMPORTANT

Usually, the rotation of the fan sends air toward the
manufacturer’s label on the center of the fan. If replacing the
fans, be sure that the fans are orientated as shown.

22 AR1000 RAID Subsystem Hardware Reference Guide

II. System Components

Connects to the SCSI
Back plane Board

3-pin
Fan Header

Pin 1

8 1

16 9

3-pin
Fan Header

LED Board Header
(connects to the LED
board through a ribbon
cable)

Front Cooling Fan Control Board

A cable connects the front cooling fan control board and the hard disk drive
message board. Orient the red markings on each end of the cable to pin 1.

Pin 1

8 1

16 9

First Set
of LEDs

Green

Yellow

Red

Fifth Set
of LEDs

Front Cooling Fans

II. Components

Hard Disk Drive Message Board

Orient the red markings on the other end of the cable to pin 1. If the fifth set
of LEDs fails, it may be indicating a faulty front cooling fan control board.
If this is the case, remove the control board and send it back to the vendor.

Message LED Description

Green: Power LED
Yellow: Hard Disk Access LED
Red: Hard Disk Status LED

Power LED Status LED Description
off off Power subsystem OK and ready for hard drive insertion
on off Hard disk drive ready for operation
on on Hard disk drive failure (*)
on fast flash RAID rebuilding (*)
on slow flash Hot-spare hard disk drive ready (*)
fast flash on Hard disk drive failure/short circuits
fast flash fast flash Fan failure

* The function must be supported by the RAID controller’s SAF-TE function.

AR1000 RAID Subsystem Hardware Reference Guide 23

II. System Components

• 2-9. SCSI Backplane

The SCSI backplane of this system is comprised of two SCSI backplane boards
(DA-BP5) with 68-pin SCSI connectors (used by the system), 80-pin SCA
connectors (used by the hard drives), power inputs, and SCSI ID dip switches.
This configuration allows Ultra2 SCSI SCA hard disk drives to be docked
into the system. The DA-BP5 SCSI board does not have built-in termination.
Therefore, the included terminator block must be used on the end connector .

II. Components

SCSI Backplane

SCSI Backplane
Board Front Side

PWR3
Connector

PWR2
Connector

PWR1
Connector

SMB Out

SCSI ID Select DIP Switches

Fan Connector

SMB In

This connector ei­ther connects to the
RAID controller
through the Ultra2
cable or is termi­nated

This connector
must connect to a
SCSI device or be
terminated.

SCSI Backplane
Board Back Side

1.6” Tray
Connector #5B

1.6” Tray
Connector #3B

1.6” Tray
Connector #1

1” Tray
Connector #5

1” Tray
Connector #4

Fan Control Board
Connector

1” Tray
Connector #3

1” Tray
Connector #2

1” Tray
Connector #1

24 AR1000 RAID Subsystem Hardware Reference Guide

IV. Hardware Setup

• 2-10. SCSI ID Setting

SCSI ID settings are made through DIP switches located on the SCSI
board. The SCSI board has four dip switches to set the hard drive’s
motor up delay time and SCSI ID.

SCSI ID Setting

IDSEL1 IDSEL0 Slot1 Slot2 Slot3A/3B Slot4 Slot5A/5B
off off Reserved
on on 15 12 11 8 3
on off 14 9 6 4 1

(*)

off on 13 10 5 2 0

(*) Default

Hard Disk Drive Motor Up Delay

RMT_START DL Y_START Description
off off Motor (spin) up when powering on
on off Motor (spin) up after ST ART UNIT command
off on Motor (spin) up after 12xSCSI ID ms

(*)

on on Reserved

SCSI ID Setting

II. Components

(*) Default

SCSI ID Dip Switches

DLY_START
RMT_START
IDSEL 1
IDSEL 0

ON

1 2 3 4

For Five-Tray SCA Hard Drive Model

IDSEL1 IDSEL0 Slot1 Slot2 Slot3A Slot4 Slot5A

ON

ON

ON

IDSEL 1=off
IDSEL 0=off

IDSEL 1=on
IDSEL 0=on

IDSEL 1=on
IDSEL 1=off

off off Resv.

on on 15 12 11 8 3

on off 14 9 6 4 1

Default setting

ON

1 2 3 4

DLY_START on
RMT_START off
IDSEL 1 off
IDSEL 0 on

ON

ON

AR1000 RAID Subsystem Hardware Reference Guide

IDSEL 1=off
IDSEL 0=on

off on 13 10 5 2 0

25

IV. Hardware Setup

For Three-Tray SCA Hard Drive Model

IDSEL1 IDSEL0 Slot1 Slot3B Slot5B

ON

ON

II. Components

SCSI Termination

ON

ON

ON

IDSEL 1=off
IDSEL 0=off

IDSEL 1=on
IDSEL 0=on

IDSEL 1=on
IDSEL 1=off

IDSEL 1=off
IDSEL 0=on

off off Resv.

on on 15 11 3

on off 14 6 1

off on 13 5 0

NOTE

Remove SCSI ID jumpers on the SCSI hard drive before
placing it into the hot-swap tray. Read the user ’s manual
of the hard drive for the location of the jumpers.

• 2-11. SCSI Termination

Terminating the SCSI bus “chain” is necessary for SCSI devices to work
properly . Therefore, every SCSI connector on the DA-BP5 SCSI backplane
should either connect to a SCSI device or be terminated with an Ultra2
SCSI terminator as shown below.

DA-BP5

26

AR1000 RAID Subsystem Hardware Reference Guide

IV. Hardware Setup

• 2-12. SCSI Cabling-1 (Default)

Cabling the RAID Controller to Two Host Computers

1

2

5

3

4

1. Channel 1 connects to Host Computer 1.

2. Channel 2 connects to Host Computer 2.

3. Channel 0 connects to the SCSI backplane.

4. The two SCSI backplanes are linked together.

5. The top SCSI backplane is terminated.

SCSI Cabling-1

II. Components

IMPORTANT

• This is the default setting of the DA3000 RAID controller: Channel
1 and Channel 2 are assigned to the host channels and Channel 0 is
assigned to the drive channel.

• This configuration can be applied to the following conditions:

1. Redundant host computers share the same disk array(s).

2. Seperate host computers use different disk arrays.

3. Only one host computer uses the disk array(s) and Chan­nel 2 is reserved.

• With this configuration, Channel 0 (the drive channel) can
connect up to 10 physical drives.

• Disk drives connecting to the two DA-BP5 SCSI backplanes
must have different SCSI IDs.

AR1000 RAID Subsystem Hardware Reference Guide

27

IV. Hardware Setup

• 2-13. SCSI Cabling-2

Cabling the RAID Controller to One Host Computer

II. Components

SCSI Cabling-2

1

2

3

4

5

1. Channel 0 connects to the Host Computer.

2. Channel 1 connects to the top SCSI backplane.

3. Channel 2 connects to the bottom SCSI backplane.

4. The top SCSI backplane is terminated.

5. The bottom SCSI backplane is terminated.

28

IMPORTANT

• This setting allows one host computer and two drive channels
to be used. Channel 0 is assigned to the host channel while
Channel 1 and Channel 2 are assigned to the drive channels.

• W ith this configuration, every drive channel supports up to 5
physical drives.

• Disk drives connecting to the two DA-BP5 SCSI backplanes
may have identical or different SCSI IDs.

NOTE

Read the DA3000 User’s Manual for how to switch a drive
channel to a host channel.

AR1000 RAID Subsystem Hardware Reference Guide

IV. Hardware Setup

• 2-14. SCSI Cabling-3

Cabling the RAID Controller with Other SCSI Devices

1

2

3

4

6

7

5

1. Cable 1 connects the host computer to Channel 0.

2. A 5-cm SCSI cable with 2 female connectors connects
Cable 1 and Cable 3.

3. Cable 3 connects to another AR1000 or SCSI device.

4. Channel 1 connects to the top SCSI backplane.

5. Channel 2 connects to the bottom SCSI backplane.

6. The top SCSI backplane is terminated.

7. The bottom SCSI backplane is terminated.

SCSI Cabling-3

II. Components

IMPORTANT

• This setting allows the connection of multiple AR1000 RAID
systems or other SCSI devices. Channel 0 is assigned to the
host channel while Channel 1 and Channel 2 are assigned to
the drive channels.

• W ith this configuration, every drive channel supports up to 5
physical drives.

• Disk drives connecting to the two DA-BP5 SCSI backplanes
may have identical or different SCSI IDs.

• All DA3000 RAID controllers on the SCSI chain must have
different SCSI IDs.

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29

IV. Hardware Setup

• 2-15. Power Supply

Power LED
Spring Clip (one on each side)

Power Switch

II. Components

Power Supply

Power Supply Placement

The redundant power supply , located in the back of the chassis, consists of
one frame and two identical AT power modules. The LED indicators light
when both the input and output voltages are stable, and dim when either
the input or output voltage fails. A button located on the bottom-left corner
of the power supply disables the sounding of the audible alarm.

Handle
Power LED

Spring Clip (one on each side)
Power Switch

Handle
AC Power In Connector

Monitor Power Connector

Alarm Reset Button

Replacing One Power Supply Module

Remove all cords connecting to the failed power module. The power sup­ply module is secured by two spring clips (as circled above) and two hooks.
To remove the power module, use a screwdriver to push in the clips and
then slide the power module out. Insert a working power supply module.

Removing the Entire Power Supply Unit

Unplug all cords connecting to the power supply unit. Remove the eight
screws securing the power unit. Remove the side panel and then push the
power unit out of the chassis.

NOTE

The alarm will sound if any of the power supply unit is not
turned on before the system is powered on.

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AR1000 RAID Subsystem Hardware Reference Guide

IV. Hardware Setup

Power Module Rating

The power modules are rated at 350W each and have passive current shar ­ing on all outputs. Each power module supplies up to 350W to share the
load, but two modules combined do not provide 700W. If one power mod­ule fails, 350W load is supported by using the other power module.

NOTE

This product has autoranging input to accommodate 220V -240V

or 110-120V. You do not have to set it manually.

Power Module Failure

If any of the power modules fails to provide a voltage on any of its outputs,
an audible alarm (located in the frame) will sound and the failed power
module’ s LED will turn OFF. The power module’ s status LED lights when
both input and output voltages are stable and darkens if either the input or
output voltages fail. If the alarm sounds, perform the following steps:

Power Supply Info

II. Components

1. Remove the power cord to the failed power module (with unlit LED).

2. Remove the two screws and slide the failed power module out. The
alarm should stop. If not, there may be a problem with the other module
or with the redundant power supply frame (very unlikely).

3. Reinsert the failed power module and plug in the AC cord to confirm.

4. If the alarm sounds again, remove the failed power module and replace
it with a good one as soon as possible.

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31

IV. Hardware Setup

2-16. Power Supply Information

Output Voltage Regulation, Ripple, and Noise

Output Voltage Limits (Vdc) Ripple/Noise

Output Min Nom Max Maximum

1 4.75V 5.00V 5.25V 50mV

II. Components

Power Supply Info

2 11.40V 12.00V 12.60V 120mV
3 -4.50V -5.00V -5.50V 120mV
4 -10.92V -12.00V -13.20V 120mV

Output Current Capacity

Output Nom (Vdc) Max (A) Min (A)

1 5.0V 40.0 3.0
2 12.0V 12.0 1.5

3 -5.0V 0.5 0.0

4 -12.0V 0.5 0.0

Input Voltage

Range Min (V) Nom (V) Max (V)

p-p

p-p

p-p

p-p

Range 1 90 115 132
Range 2 180 230 264

Safety

The power system meets all applicable clauses for UL 1950 2nd edition with­out D3 deviations. The power system passes all tests for CUL and TUV
safety.

EMI

The power system, operating with resistive load, meets FCC class B and
CISPR 22 class B conducted limits.

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AR1000 RAID Subsystem Hardware Reference Guide