Advantech RAID-800S Installation and operating manual

RAID-800S
SCSI-to-SCSI
Disk Array Subsystem
Installation Reference Guide

Copyright Notice
This document is copyrighted, 1998, by Advantech Co., Ltd. All rights
are reserved. Advantech Co., Ltd. reserves the right to make
improvements to the products described in this manual at any time with-
out notice.
No part of this manual may be reproduced, copied, translated or trans-
mitted in any form or by any means without the prior written permission
of Advantech Co., Ltd. Information provided in this manual is intended
to be accurate and reliable. However, Advantech Co., Ltd. assumes no
responsibility for its use, nor for any infringements upon the rights of
third parties which may result from its use.
All brand and product names mentioned herein are trademarks or regis-
tered trademarks of their respective holders.
Part No. 2002080060
1st Edition Printed in Taiwan December 1998
i

Packing List
Before you begin installing your unit, please make sure that the follow-
ing materials have been shipped:
• RAID-800S subsystem unit
• One power cord
• Two 120 cm external SCSI cables
• One 9P-female to 9P-female RS-232 cable
• Installation reference guide
• Spare screws, etc.
• Nine keys (seven for mobile racks, two for power supplies)
If any of these items are missing or damaged, contact your
distributor or sales representative immediately.
We have carefully inspected the RAID-800S mechanically and
electrically before shipment. It should be free of marks and scratches
and in perfect working order upon receipt.
As you unpack the RAID-800S, check it for signs of shipping damage.
(For example, damaged box, scratches, dents, etc.) If it is damaged or it
fails to meet the specifications, notify our service department or your lo-
cal sales representative immediately. Also notify the carrier. Retain the
shipping carton and packing material for inspection by the carrier. After
inspection, we will make arrangements to repair or replace the unit.
ii

Additional Information and Assistance
1. Visit the Advantech Web sites at www.advantech.com or
www.advantech.com.tw where you can find the latest information
about the product.
2. Contact your distributor, sales representative, or Advantech's cus-
tomer service center for technical support if you need additional as-
sistance. Please have the following information ready before you call:
• Product name and serial number
• Description of your peripheral attachments
• Description of your software (operating system, version, applica-
tion software, etc.)
• A complete description of the problem
• The exact wording of any error messages
iii

Safety Instructions
1. Read these safety instructions carefully.
2. Keep this user's manual for later reference.
3. Disconnect this equipment from any AC outlet before cleaning. Do not use liquid
or spray detergents for cleaning. Use a damp cloth.
4. For pluggable equipment, the power outlet must be installed near the equipment
and must be easily accessible.
5. Keep this equipment away from humidity.
6. Put this equipment on a reliable surface during installation. Dropping it or letting
it fall could cause damage.
7. The openings on the enclosure are for air convection. Protect the equipment
from overheating. DO NOT COVER THE OPENINGS.
8. Make sure the voltage of the power source is correct before connecting the
equipment to the power outlet.
9. Position the power cord so that people cannot step on it. Do not place anything
over the power cord.
10. All cautions and warnings on the equipment should be noted.
11. If the equipment is not used for a long time, disconnect it from the power source
to avoid damage by transient over-voltage.
12. Never pour any liquid into an opening. This could cause fire or electrical shock.
13. Never open the equipment. For safety reasons, the equipment should be opened
only by qualified service personnel.
14. If any of the following situations arises, get the equipment checked by service
personnel:
a. The power cord or plug is damaged.
b. Liquid has penetrated into the equipment.
c. The equipment has been exposed to moisture.
d. The equipment does not work well, or you cannot get it to work according to
the user's manual.
e. The equipment has been dropped and damaged.
f. The equipment has obvious signs of breakage.
15. DO NOT LEAVE THIS EQUIPMENT IN AN UNCONTROLLED
ENVIRONMENT WHERE THE STORAGE TEMPERATURE IS BELOW -20°
C (-4° F) OR ABOVE 60° C (140° F). IT MAY DAMAGE THE EQUIPMENT.
The sound pressure level at the operator's position according to IEC 704-1:1982 is equal
to or less than 70 dB(A).
DISCLAIMER: This set of instructions is given according to IEC 704-1. Advantech
disclaims all responsibility for the accuracy of any statements contained herein.
iv

Wichtige Sicherheishinweise
1. Bitte lesen sie Sich diese Hinweise sorgfältig durch.
2. Heben Sie diese Anleitung für den späteren Gebrauch auf.
3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie
Keine Flüssig-oder Aerosolreiniger. Am besten dient ein angefeuchtetes Tuch
zur Reinigung.
4. Die NetzanschluBsteckdose soll nahe dem Gerät angebracht und leicht
zugänglich sein.
5. Das Gerät ist vor Feuchtigkeit zu schützen.
6. Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten. Ein Kippen
oder Fallen könnte Verletzungen hervorrufen.
7. Die Belüftungsöffnungen dienen zur Luftzirkulation die das Gerät vor über-
hitzung schützt. Sorgen Sie dafür, daB diese Öffnungen nicht abgedeckt
werden.
8. Beachten Sie beim AnschluB an das Stromnetz die AnschluBwerte.
9. Verlegen Sie die NetzanschluBleitung so, daB niemand darüber fallen kann.
Es sollte auch nichts auf der Leitung abgestellt werden.
10. Alle Hinweise und Warnungen die sich am Geräten befinden sind zu beacht-
en.
11. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es
vom Stromnetz trennen. Somit wird im Falle einer Überspannung eine Be-
schädigung vermieden.
12. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten
in das Gerät gelangen. Dies könnte einen Brand bzw. elektrischen Schlag
auslösen.
13. Öffnen Sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen
Sicherheit nur von authorisiertem Servicepersonal geöffnet werden.
14. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu tren-
nen und von einer qualifizierten Servicestelle zu überprüfen:
a - Netzkabel oder Netzstecker sind beschädigt.
b - Flüssigkeit ist in das Gerät eingedrungen.
c - Das Gerät war Feuchtigkeit ausgesetzt.
d - Wenn das Gerät nicht der Bedienungsanleitung entsprechend funktioni
ert oder Sie mit Hilfe dieser Anleitung keine Verbesserung erzielen.
e - Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.
f - Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.
Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000
beträgt 70dB(A) oder weiger.
DISCLAIMER: This set of instructions is given according to IEC704-1. Advantech dis-
claims all responsibility for the accuracy of any statements contained herein.
v

Contents
Chapter 1 General Information ..........................................1
1.1 Introduction.............................................................................2
1.2 Key Features ..........................................................................3
1.3 Unpacking Your Subsystem ..................................................4
1.4 The Front Panel......................................................................5
1.4.1 RAID Disk Array Controller............................................5
1.4.2 Mobile Racks....................................................................7
1.5 The Rear Panel.......................................................................9
1.5.1 Power Supplies.................................................................9
1.5.2 Fans ................................................................................ 10
1.5.3 Host Channels ................................................................ 10
1.5.4 Drive Channel Termination............................................. 10
1.5.5 Monitor Port ................................................................... 10
1.5.6 Modem Port ................................................................... 10
Chapter 2 Functions.........................................................11
2.1 Features of the Controller Unit ........................................ 12
2.2 Functions of the Controller Unit....................................... 12
2.2.1 RAID/SCSI Disk Array Management...........................12
2.2.2 Highly Flexible User Interface .......................................12
2.2.3 RAID Function Automation ........................................... 12
2.2.4 SCSI Performance Enhancement .................................. 13
2.2.5 Systems Performance Monitoring .................................. 13
2.3 Components of the Controller Unit ................................. 13
2.3.1 486DX Processor ...........................................................14
2.3.2 Memory Subsystem and DRAM Cache ........................ 14
2.4 Controller Firmware ........................................................... 14
2.5 SCSI Bus Interface ............................................................. 14
2.6 User to RAID-800S Interface ........................................... 15
2.7 SCSI Functions .................................................................... 15
vi

2.8 Disk Drive Organization .................................................... 15
2.8.1 Physical Drive Groups.................................................... 15
2.8.2 Logical Unit Numbers (LUNs) ...................................... 15
2.9 RAID Management ............................................................ 16
2.10 Drive Management ............................................................. 16
2.10.1 Hot-Swap Drive Replacement .....................................16
2.10.2 Disk Failure Detection..................................................17
2.10.3 Cache Management .....................................................17
2.10.4 Read Cache.................................................................. 17
2.10.5 Write Back Cache ........................................................ 17
2.10.6 Write Through Cache ...................................................17
Chapter 3 Installation Overview ..................................... 19
3.1 Powering On Your Subsystem ........................................... 20
3.2 Installing Hard Disk Drives .............................................. 20
3.2.1 Device Channels ............................................................ 20
3.2.2 How the Device Channels are Connected..................... 21
3.2.3 Installation ...................................................................... 22
3.2.4 LEDs on the Mobile Rack.............................................. 24
3.3 Connecting External SCSI Devices ................................. 25
3.3.1 Host Channels ................................................................ 25
3.3.2 How the Host Channels are Connected......................... 25
3.3.3 Connecting an External SCSI Device ............................ 25
3.4 Replacing a Power Supply.................................................. 26
3.5 Replacing a Fan ................................................................... 27
3.6 Memory Upgrades .............................................................. 27
3.7 Replacing the Fan of the Mobile Rack ............................ 28
3.8 Connecting a PC or Terminal............................................ 30
3.9 Connecting a Modem ......................................................... 31
Chapter 4 SCSI Configuration Guidelines ..................... 33
4.1 SCSI IDs ............................................................................... 34
4.2 Terminators.......................................................................... 34
Chapter 5 Quick Setup Guide ......................................... 35
vii

Chapter 6 Configuring the Subsystem .......................... 41
6.1 Configuration Methods ...................................................... 42
6.1.1 Configuring Through the Disk Array Controller............. 42
6.1.2 Configuring Through a Terminal..................................... 42
6.2 Creating a New RAID ........................................................ 44
6.3 Deleting an Existing RAID................................................ 66
6.4 Rebuilding an Existing RAID............................................ 81
6.5 Changing the Host Channel's SCSI ID ........................... 83
6.6 Configuring Your Terminal ................................................ 88
6.7 Setting Your Password........................................................ 95
6.8 RAID Array Consistency Check .................................... 100
6.9 Viewing the RAID Controller's Configuration ............. 103
6.10 Configuring an Ultra Wide SCSI Subsystem................. 109
6.11 Main Menu......................................................................... 116
6.11.1 Edit Chasis .................................................................. 120
6.11.2 Quick Setup ................................................................ 122
6.11.3 Edit Array ................................................................... 123
6.11.4 Edit Chan .................................................................... 124
6.11.5 View Config ................................................................ 125
6.11.6 RS232 Params ............................................................ 126
6.11.7 User Params............................................................... 127
6.11.8 Save Config ................................................................ 128
6.11.9 Restart ........................................................................ 129
6.11.10Utility......................................................................... 130
Chapter 7 Configuring Faxes and Pagers ................... 131
7.1 Configuring the Modem Port .......................................... 132
7.2 Configuring Your Pager .................................................... 138
7.3 Configuring Your Fax........................................................ 147
Chapter 8 Upgrading Your Firmware ........................... 155
viii

Appendix A RAID Levels............................................... 159
A.1 RAID 0 (Striping) .............................................................. 160
A.2 RAID 1 (Mirroring) .......................................................... 160
A.3 RAID 0+1 (Striping and Mirroring) ............................... 160
A.4 RAID 3 (Striping with One Parity Hard Drive) ............ 160
A.5 RAID 5 (Striping with Parity) .......................................... 161
Appendix B Technical Specifications .......................... 163
B.1 Array Controller ................................................................ 164
B.2 Configuration ..................................................................... 164
Appendix C RAID Controller's Error Messages .......... 165
C.1 RAID Controller’s Error Messages .............................. 166
C.2 RAID Controller's Warning Messages ......................... 166
C.3 RAID Controller's Messages ......................................... 166
Appendix D Mapping the LUN of the Host Channel to
the Slices of an Array ................................ 167
Mapping Principle ....................................................................... 168
Appendix E Frequently Asked Questions ................... 171
Frequently Asked Questions .................................................... 172
ix

x

CHAPTER
1
General Information
• Introduction
• Key Features
• Unpacking Your Subsystem
• The Front Panel
• The Rear Panel

2RAID-800S User's Manual
1.1 Introduction
The RAID-800S is a SCSI-to-SCSI RAID (Redundant Arrays of Indepen-
dent Disks) Disk Array subsystem. A disk array is two or more disks
grouped together to appear as a single disk to the host system.
This “Host Independent” RAID subsystem supports RAID level 0, 1,
0+1, 3 and 5 which provide improved data availability and reliability.
Regardless of the RAID level your subsystem is configured, each RAID
array consists of a set of disks which to the user appears to be a single
large disk capacity.
One unique feature of these RAID levels is that data are spread across
separate disks as a result from the redundant manner in which data is
stored in a RAID disk array. If a disk in the RAID array fails, your
subsystem continues to function without any risk of data loss. This is
because redundant information are stored separate from the data. These
redundant information will then be used to reconstruct any data that
was stored on a failed disk. In other words, your subsystem can tolerate
the failure of a drive without losing data and operates independently of
each other.
The RAID-800S Ultra Wide SCSI subsystem allows very fast 40 Mbps
transfer rate using a 16-bit SCSI bus thus providing faster data input
and output. It supports a wide range of brands, capacities, models and
access time hard disk drives. Its modular design allows hot-swapping of
hard drives without interrupting subsystem operation.

Chapter 1 General Information 3
1.2 Key Features
• Two 16 character LCD back-light display panels
• Four easy to use push buttons on the front panel (ESC, SEL, Up,
Down)
• Selectable RAID levels (Level 0, Level 1, Level 0+1, Level 3 and Level
5)
• Cache memory up to 128MB
• SCSI channels with modular expansion capability
- Four Ultra Wide SCSI channels on the base module (two host
channels and two device channels)
- Additional channels as option
• Multi-host attachment
• Up to 4 logical drives with different RAID levels
• Up to 8 LUNs per host channel, each with different RAID levels
• Disk drive failure rebuilding
- Hot standby disk drive and automatic rebuild
- Hot-swap and automatic on-line rebuild right after replacing the
failed hard drive
• Bad sector reassignment
• Concurrent I/O tagged command queuing
• Two RS-232 serial ports for controller management and direct modem
connection - remote notification (FAX & pager)
• Flash EEPROM for easy firmware upgrade
• Hot swappable with fail-over capability controller (available soon)

4RAID-800S User's Manual
1.3 Unpacking Your Subsystem
Before we continue, you need to unpack your RAID-800S subsystem
and verify that the contents of the shipping carton are all there and in
good condition. Before removing the subsystem from the shipping
carton, you should visually inspect the physical condition of the
shipping carton. Exterior damage to the shipping carton may indicate
that the contents of the carton are damaged. If any damage is found, do
not remove the components; contact the dealer where you purchased
your subsystem for further instructions.
Your package contains the following items:
• RAID-800S subsystem unit
• One power cord
• Two 120 cm external SCSI cables
• One 9P-female to 9P-female RS-232 cable
• Installation reference guide
• Spare screws, etc.
• Nine keys (seven for mobile racks, two for power supplies)
If any of these items are missing or damaged, please contact your dealer
or sales representative for assistance.
Note: Before you begin to use your RAID-800S subsystem,
read sections 1.4 and 1.5 to learn about the major
components installed in the subsystem and how they
can be used.

Chapter 1 General Information 5
Disk Array
Controller
Slot 1
Slot 2
Slot 3
Slot 5
Slot 6
Slot 7
Slot 8
1.4 The Front Panel
The front panel consists of a RAID Disk Array Controller and seven
mobile racks (Slots 1 to 3 and Slots 5 to 8, Slot 4 is default - not in-
stalled because there is no more space for another hard drive).
Figure 1-1: Front Panel
1.4.1 RAID Disk Array Controller
The RAID Disk Array Controller is the major component of the entire
RAID-800S subsystem. This is where you will configure the RAID disk
array and RAID level of your subsystem.
Figure 1-2: Front View of the Controller
LCD
screen
Reset

6RAID-800S User's Manual
Function
The LCD screen on the left displays the config-
uration of your subsystem such as the memory
size, firmware version, as well as the brand and
capacity of the hard drives installed in your
subsystem. Through this screen, you will also
be able to enter the Main Menu to further
configure your subsystem.
Use the Up or Down arrow button to go through
the information on the LCD display screen. This
is also used to move between each menu when
you configure your subsystem.
This is used to enter the option you have
selected.
Press this button to return to the previous
menu.
Red blinking LED indicates data is being
accessed.
Green LED indicates power is on.
This is used to restart the Disk Array Controller.
Parts
LCD screen
Up and Down
arrow buttons
SEL button
ESC button
ACC LED
PWR LED
Reset
Figure 1-3: Rear View of the Controller
(visible only inside the chassis)
Host channel 1 Host channel 2
Device channel 1
Modem
Power
connector
Device channel 2 Monitor

Chapter 1 General Information 7
Power
LED
Fan holder
Access
LED
Keylock
Figure 1-4: Front View of the Mobile Rack
Function
Used to turn on or off the power of the hard
drive and locks the mobile rack to the sub-
system.
Green LED indicates power is on. If there is no
power, the LED is red.
Blinking LED indicates data is being accessed
from the hard drive. If the hard drive is not
being accessed, the LED will not illuminate.
Holds the fan located at the front of the mobile
rack.
Parts
Keylock
Power LED
Access LED
Fan holder
1.4.2 Mobile Racks
The subsystem is equipped with 7 aluminum frame mobiles racks used
for housing hard drives. The aluminum frame provides better heat
dissipation. It is equipped with a fan located at the front of the mobile
rack. The fan provides sufficient airflow and ventilation in the mobile
rack. In case the fan fails to function, you can easily replace the fan
from the front of the mobile rack.

8RAID-800S User's Manual
Power
connector
68-pin
SCSI flat
cable
SCSI ID
selector
cable
Drive
activity
cable
Note: Refer to section 3.2.3 for more information.
Figure 1-5: Opening the Mobile Rack
Figure 1-6: Internal Structure of the Mobile Rack
Figure 1-7: Installing the Hard Disk Drive

Chapter 1 General Information 9
1.5.1 Power Supplies
Your subsystem comes with 2 power supplies (Power supply 1 and
Power supply 2) located at the rear of the subsystem. During normal
operation, the color of the “Power 1” and “Power 2” LEDs (located at
the front panel) are green. You may use one power supply but in case
of failure or damage, you will not have a backup power for your
subsystem. If two power supplies are in use and one failed to function,
an alarm will sound warning you of power failure. Press the Reset
button (located at the rear panel) to stop the alarm.
The LED of the power supply that needs to be replaced will turn red.
The color will return to normal (green) only after you have replaced the
defective power supply. Refer to section 3.4 for instructions on replac-
ing a power supply.
1.5 The Rear Panel
Power
supply
2
Host
channel A
Fan 1
Host
channel B
Monitor
port Modem port
Power
supply
1
Reset
button
Drive
channel
termination
Fan 2
Figure 1-8: Rear Panel