nStor NexStor 4200F Series User manual

USER'S GUIDE
NexStor® 4200F Series
STORAGE SYSTEMS
4200F.book Page 1 Thursday, January 23, 2003 2:47 PM

4200F.book Page 2 Thursday, January 23, 2003 2:47 PM

USER'S GUIDE
NexStor® 4200F Series
STORAGE SYSTEMS
4200F.book Page 1 Thursday, January 23, 2003 2:47 PM

nStor Corporation, Inc.
Restricted Rights and Liability
No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any
means, electronic, mechanical, recording, or otherwise, in whole or part, without prior written permission from
nStor Corporation, Inc.
nStor Corporation, Inc. shall not be liable for any damages or for the loss of any information resulting from the
performance or use of the information contained herein. Your rights to the software are governed by the license
agreement included with any accompanying software. nStor Corporation reserves the right to periodically revise
this manual without notice. Product features and specifications described are subject to change without notice.
For Regulatory information, see Appendix C.
Copyright
nStor
Corporation
, Inc.
6190 Corte Del Cedro Road
Carlsbad, CA 92009
Copyright © 2003 nStor Corporation, Inc. All Rights Reserved.
nStor, AdminiStor, StorView, NexStor, the NexStor logo, the StorView logo, and the nStor logo are trademarks or
registered trademarks of nStor Corporation, Inc.
Other company and product names herein may be trademarks or registered trademarks of their respective
companies.
Agency Notes
WARNING: Drives and controller/adapter cards described in this manual should only be installed in UL-listed and CSA
certified computers that give specific instructions on the installation and removal of accessory cards (refer to your
computer installation manual for proper instructions).
ATTENTION: Les lecteurs et cartes contrôleurs décrits ici ne doivent être montés que sur des ordinateurs homologués (UL et
CSA) et livrés avec des manuels contenant les instructions d’installation et de retrait des accessoires. Reportez-
vous au manuel d’installation de votre ordinateur.
SERVICE NOTE: Remove the power cables prior to servicing this equipment.
!
4200F.book Page 2 Thursday, January 23, 2003 2:47 PM

i
Contents
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
1 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
At a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Cooling Fan Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SES Controller Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Disk I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Host I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
RAID Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Control and Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Status Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Drive LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Audible Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2 Topologies and Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . 21
Operating Mode Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Simplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Daisy-Chain JBOD Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Understanding Mirrored Configurations . . . . . . . . . . . . . . . . . . . 35
Alternate Path Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Controller-Controller Nexus (C-C Nexus) . . . . . . . . . . . . . . . . . . 36
Fibre Channel Media Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
A Word about Clustering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Minimizing Downtime for Maximum Data Availability . . . . . . . . . 37
How Available are Clusters? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Application of Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4200F.book Page i Thursday, January 23, 2003 2:47 PM

Table of Contents
ii
3 Setup and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Storage System Detailed Installation . . . . . . . . . . . . . . . . . . . . . . 42
Installing the Storage System Enclosure into the Rack Cabinet . . 42
Installing the Storage System into the Tower Stand . . . . . . . . . . 45
Completing the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Operating Mode Configuration and Cabling . . . . . . . . . . . . . . . . 52
Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
A Word About LUN Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Powering On the Storage System . . . . . . . . . . . . . . . . . . . . . . . . 102
Powering Off the Storage System . . . . . . . . . . . . . . . . . . . . . . . . 102
4 Managing and Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Enclosure Component Monitoring . . . . . . . . . . . . . . . . . . . . . . . 103
Status Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Drive LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Audible Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
One-Touch Annunciation Configuration Display . . . . . . . . . . . . 109
VT-100 Interface Enclosure Monitoring . . . . . . . . . . . . . . . . . . . 110
SES Commands Debug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Enclosure Fan Speed Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Uploading SES Controller Card Firmware . . . . . . . . . . . . . . . . . . 115
Uploading RAID Controller Firmware . . . . . . . . . . . . . . . . . . . . 118
5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
General Enclosure Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Common Fibre Loop/Bus Problems . . . . . . . . . . . . . . . . . . . . . . 120
Common Problems and Interpreting the LEDs . . . . . . . . . . . . . . 122
Terminal and COM Port Problems . . . . . . . . . . . . . . . . . . . . . . . 123
Problems During Bootup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Removing the Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Replacing the Cooling Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Replacing a Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Replacing a Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Replacing the Disk I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Replacing the Host I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Replacing the SES Controller Card . . . . . . . . . . . . . . . . . . . . . . . 139
Replacing a RAID Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
4200F.book Page ii Thursday, January 23, 2003 2:47 PM

Table of Contents
iii
Replacing the Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
A Technical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
B Port and Transceiver Information . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Service Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Null-Modem Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . 150
Optical SFP Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
C Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Compliance Information Statement . . . . . . . . . . . . . . . . . . . . . . . 153
FCC Class A Radio Frequency Interference Statement . . . . . . . . . 154
Class A Taiwanese Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Class A Japanese Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
CE Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Power Cord Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
4200F.book Page iii Thursday, January 23, 2003 2:47 PM

Table of Contents
iv
4200F.book Page iv Thursday, January 23, 2003 2:47 PM

v
Preface
About this Manual
Welcome
Congratulations on the purchase of your new NexStor 4200F Series RAID Storage
System from nStor Technologies. The NexStor 4200F Series is a very
high-performance fully fault-tolerant 2 Gb Fibre Channel-to-Fibre Channel
storage system. It’s unique 2U design is optimized to fit in the compact space of
today’s data center rack enclosures and as a deskside tower system.
At its core is the NexStor 4000F JBOD Fibre Channel storage enclosure which
supports up to twelve hot pluggable 1-inch high Fibre Channel disk drives all in a
2U (3.47-inch) form factor enclosure. Full component redundancy is provided
through hot pluggable Disk I/O cards, Host I/O cards, cooling fan module, and
independent power supplies. RAID functionality is provided through hot pluggable
embedded Fibre Channel-to-Fibre Channel RAID Controllers. The NexStor 4200FS
is available in two model configurations, either as a single controller configuration
designed for Stand-Alone topologies or dual controllers configuration for
Active-Active topologies.
Product Identification
Storage Enclosure Number of Controllers Model of Controller
NexStor 4000F
0 JBOD
NexStor 4210F
1 NexStor -Mylex FFx2
NexStor 4220F
2 NexStor r-Mylex FFx2
4200F.book Page v Thursday, January 23, 2003 2:47 PM

About this Manual
Features
vi
This user’s guide is your complete documentation to set up the storage system
hardware, add components, cable the storage system components, replace parts,
and diagnose/repair your system.
For details on software configuration and management, refer to the software
guide included with your system.
Features
The NexStor 4200F Series Storage Systems are designed for mission critical
applications requiring the highest performance with uncompromised data
reliability, such as mid-range and enterprise server storage, while maintaining
exceptionally high throughput. The storage system is ideally suited for high
bandwidth data intensive applications, such as electronic commerce, digital
video, CAD, seismic research, digital pre-press, 3-D imaging, and SAN
environments.
The following are major features of the NexStor 4200F Series Storage Systems:
■
2 Gb Fibre Channel-to-Fibre Channel storage system enclosure.
■ Hot pluggable FC-to-FC RAID Controllers.
■
Hot pluggable disk drives, 12 per enclosure.
■
Hot pluggable cooling fan modules and power supplies.
■ SES Enclosure management includes onboard environmental monitoring.
■
Designed to fit standard 19-inch rack enclosures and a deskside tower.
■
Front panel LEDs provide notifications of system component status, and
logical and physical drive status.
■ Transparent failover/failback with multiple target ID support using dual
hot-pluggable RAID controllers.
■
Operating system independence – no special software or drivers required.
■
Dual 2 Gb per second Fibre Channel host ports. Fabric ports are optimized
with full duplex operations and autonegotiate features.
■ Dual 2 Gb per second disk side channels for high performance, failure
resilient paths to the drives. Full duplex operations optimize disk channels..
4200F.book Page vi Thursday, January 23, 2003 2:47 PM

About this Manual
Features vii
■
Capable of sustaining 350 MB/sec sequential RAID 5 reads and up to
100,000 IOPs in dual active configurations.
■
Supports cache memory options from 128 MB to 512 MB using standard
PC-133 compatible SDRAM. (DIMMs must be qualified by nStor.)
■ Support for RAID levels 0, 1, 0+1, 3, 5, 10, 30, and 50.
■
Online capacity expansion allowing reconfiguration without interruptions.
■
Drive Roaming provides no loss of configurations and LUNs.
■ Host clustering for maximum data availability.
4200F.book Page vii Thursday, January 23, 2003 2:47 PM

About this Manual
Features
viii
4200F.book Page viii Thursday, January 23, 2003 2:47 PM

1
Chapter 1
Getting Started
This chapter provides a description of the enclosure components and its onboard
monitoring systems.
The Components section identifies and gives a complete description of each
major component. The Monitoring section describes the enclosure’s LEDs, and
the manner in which the normal and abnormal conditions are presented.
NexStor 4200F Series Storage System
RESETALARM
RESETALARM
Tower Model
Rack-Mount Model
4200F.book Page 1 Thursday, January 23, 2003 2:47 PM

Chapter 1 - Getting Started
At a Glance
2
At a Glance
The following illustrations show the featured components of the NexStor 4200F
Series Storage System. Familiarize yourself with its components prior to installing
and using the storage system.
Component Views
SESCONTROLLER
PART NUMBER08-9-96322001
ARTWORKREVISION-1
JP1
JP2
RS-232
A
D
0
A
D
1
A
D
2
S
P
1
S
P
2
B
D
R
D
L
Y
R
M
T
SES
D1
DISKI/O
D2
Tx Tx
Tx
Fibre Disk IO LRC
P/N 08-9-96318001
A/W Rev-1
INSTALL JUMPERS 1 & 2
FOR HARDWARE
FAI LURE DETECT
ADD JUMPER FOR
1G OPERATION
JP2
JP2
JP3
JP1
ADD JUMPER FOR
SPLIT BUS MODE
D1
DISKI/O
D2
TxTx
Tx
Fibre Disk IO LRC
P/N 08-9-96318001
A/W Rev-1
INSTALL JUMPERS 1 & 2
FOR HARDWARE
FAILURE DETECT
ADD JUMPER FOR
1G OPERATION
JP2
JP2
JP3
JP1
ADD JUMPER FOR
SPLIT BUS MODE
10/100TX
BBU
FAULT
PRTNR
FAI L PWR
RDY
DRV
1
HOST
1
DRV
0
HOST
0
CACHE
DIRTYNOT
RDY
RS-232
10/100TX
BBU
FAULT
PRTNR
FAI L PWR
RDY
DRV
1
HOST
1
DRV
0
HOST
0
CACHE
DIRTY NOT
RDY
RS-232
H
OST
I/O
OKOK
2G
SWITCHCONNECTIOONS
PIN1-1G/2G
PIN2WAHOO
PIN3-HUBFAILOVER
PIN4-C0C1_ENB
PIN5-C0CH0CH1_ENB
PIN6-VCC
PIN7-VCC
PIN8-VCC
FIBREHOSTIO
P/N08-9-96319001
A/WREV-1
H
OST
I/O
OKOK
2G
SWITCHCONNECTIOONS
PIN1- 1G/2G
PIN2WAHOO
PIN 3 - HUBFAILOVER
PIN4-C0C1_ENB
PIN 5 - C0CH0CH1_ENB
PIN 6 - VCC
PIN7 - VCC
PIN8- VCC
FIBREHOSTIO
P/N 08-9-96319001
A/W REV-1
350-watt hot-pluggable
independent power supplies
Dual in-line 80-CFM hot
swappable cooling fans
SES Card
Disk I/O Cards
Host I/O Cards
H1H0H0
H1
RAID Controllers
RESET ALARM
Drive Status LEDs
(left column of LEDs)
Power On LED
Channel Status LED
Power Supply Status LED
Fan Status LED
Alarm Reset Button
Drive Activity LEDs
(right column of LEDs)
4200F.book Page 2 Thursday, January 23, 2003 2:47 PM

Chapter 1 - Getting Started
Components
3
Components
This section provides a description of each of the major components that
comprise the NexStor 4200F Series Storage System.
Front Bezel
The front bezel houses the Status LEDs, Drive LEDs, and alarm reset button. When
removed, the user has access to the disk drives. The front bezel can be installed or
removed without interruption to system activities.
Embedded within the front bezel is the electronic package that provides the
communication with the SES controller. The SES controller manages the signals to
the front panel through a smart interface. Refer to “Control and Monitoring” on
page 17 for details on the monitoring functions.
Power is applied to the front bezel through the interface edge connector, where a
control circuit monitors the bezel for proper connection. When the bezel is
properly installed and power is applied to the enclosure, the bezel is immediately
energized.
Removable Front Bezel
To remove the bezel and gain access to the disk drives, use a Phillips screwdriver
to release both bezel fasteners, then grasp and remove the bezel. The fasteners
rotate one-quarter turn clockwise to lock and counter-clockwise to unlock.
Reset Alarm
Drive LEDs
Alarm Reset Button
Status LEDs
4200F.book Page 3 Thursday, January 23, 2003 2:47 PM

Chapter 1 - Getting Started
AC Power
4
AC Power
The power system consists of two 350-watt hot-pluggable power supplies, each
with independent AC power cords and cooling fans providing the enclosure with
“N+1” redundant power. Each power supply has auto-switching circuitry for use
with either 100V or 240V AC systems.
Power Supply
Power is applied to the enclosure by pressing each of the two power supply
On/Off switches to their “On” position.
Each power supply has a Power On and a Fault LED. The Power On LED
illuminates indicating that AC power has been applied. The Fault LED illuminates
amber if the power supply is installed and power is not applied to the power
supply or the power supply cooling fan fails. You will also receive an alarm for
the fault condition.
When power is applied to a power supply the front bezel Power On LED
illuminates to indicate a power on condition. Also on the front bezel is the Power
Supply Status LED which illuminates green when both power supplies are on and
operating normally. If only one power supply is operational, the Power Supply
Status LED will change to amber.
Also on each power supply is an AC Power Cord Module, that incorporates a
power cord bale which prevents inadvertent disconnects.
Power On LED
(green)
Fault LED
(amber)
4200F.book Page 4 Thursday, January 23, 2003 2:47 PM

Chapter 1 - Getting Started
Cooling Fan Module
5
Cooling Fan Module
The cooling system consists of two high-performance (80-CFM) cooling fans
mounted in a single fan module which slides into the open bay at the rear of the
enclosure. The design of the fan module provides for an easy user-replaceable
component in a live environment without interruption of service.
If any one fan should fail, cooling redundancy and efficiency are degraded. The
SES processor communicates monitoring status of the cooling fans which will
illuminate the Fan Status LED and sound an alarm should a problem occur.
The enclosure temperature sensors monitor the enclosure temperature for
out-of-tolerance conditions. The maximum temperature threshold value is 60° C
(140° F). If the threshold value is exceeded, the Fan Status LED will begin flashing
amber. This LED notification gives the user a warning that some condition is
causing the enclosure temperature to exceed its limits and action is required by the
user to determine the cause and take corrective action. It may be due to a blockage
of air flow or a low fan speed.
WARNING: Do not operate the enclosure for extended periods of time (greater
than 5 minutes) with the cooling fan module removed.
The firmware-based VT-100 interface has an option to manage fan speed. This option
provides a whisper mode fan operation for noise sensitive environments. When
enabled (default) and based on a set of conditions, the firmware will manage the
cooling fans speed to maintain the enclosure temperature while minimizing noise
levels. Refer to “Enclosure Fan Speed Control” on page 113 for more details on using
this option.
Cooling Fan Module
Jumpers JP1 and JP2
Fan Speed Override Control
4200F.book Page 5 Thursday, January 23, 2003 2:47 PM

Chapter 1 - Getting Started
SES Controller Card
6
A manual override of the fan speed control is available for special circumstance
environments. Referring to the illustration on the preceding page, two jumpers
are provided on the fan module printed circuit board to override the firmware
control of the fan speeds. This hardware setting provides full voltage to the fans
for maximum operational speed, which is greater than the maximum speed set
by the automatic software control. This configuration is normally used when fan
speed noises are not an issue, and the ambient operating temperature is at or
above 30°C (86°F), thus ensuring that maximum available cooling is being
provided.
The jumpers JP1 and JP2 by default are offset, which enables the automatic fan
speed control. Placing the jumper on both pins for each jumper will override the
automatic setting and configure the fans to maximum power.
SES Controller Card
WARNING: The SES Controller card is NOT HOT SWAPPABLE. You must POWER
DOWN the enclosure prior to removing or installing this card.
The SES Controller card provides the built-in environmental and system status
monitoring, as well as the switches for setting enclosure ID addresses and drive
spin up options. This card is installed at the rear of the enclosure in the lowest
slot below the two Disk I/O cards.
SES Controller Card
SES CONTROLLER
PART NUMBER 08-9-96322001
ARTWORK REVISION -1
JP2
RS-232
A
D
0
A
D
1
A
D
2
S
P
1
S
P
2
B
D
R
D
L
Y
R
M
T
SES
SES Switches
RS-232 Service Port
4200F.book Page 6 Thursday, January 23, 2003 2:47 PM

Chapter 1 - Getting Started
SES Controller Card
7
The SES processors continuously monitor the enclosure for temperature status,
fan status, power supply status, and FC loop status. The processors are
responsible for reporting environmental and system status to the front bezel
LEDs/audible alarms, SES Monitoring software (VT-100), and external monitoring
software.
At power up, the SES processors will read the switch settings and configure the
drive slots for the appropriate FC base address. It then executes a self-test. The
firmware also contains software functions for enclosure monitoring and
management. This firmware is upgradeable using the SES RS-232 Service port
located on the card face plate. Refer to “Uploading SES Controller Card
Firmware” on page 115 for more details.
The SES protocol uses the drives in slots 1 and 7 to maintain its communication
link. You must install drives in both of these slots to ensure fault tolerance for the
SES communications link.
Below is an illustration depicting the drive slot identification. Drive slot numbers
are not the drive device IDs.
Drive Slot Location
Slot 1 Slot 4 Slot 7 Slot 10
Slot 3 Slot 6 Slot 9 Slot 12
Slot 2 Slot 5 Slot 8 Slot 11
Viewed from the front of the enclosure
4200F.book Page 7 Thursday, January 23, 2003 2:47 PM

Chapter 1 - Getting Started
Drive Device ID Settings
8
Drive Device ID Settings
Located on the SES Controller card face plate are a set of switches. These
switches will configure the enclosure base Fibre address which configures the
disk drives in each drive slot with a device ID, as well as drive delay spin-up and
remote spin-up options. The default setting is all switches are set to their DOWN
position.
SES Controller Card Switches
The left most three switches will configure a series of pre-determined range of
device IDs. Refer to the table below:
Disk Device ID Switch Settings
For example, if the setting for switches 1 through 3 are “Down.” the device ID
addresses for the drive slots 1 - 12 would be 0 - 11 respectively.
NOTE: If a hard address ID conflict occurs during Fibre Channel loop
initialization, the Fibre Channel protocol will dynamically set the drive
IDs. This could cause problems with some software products.
Switches 4, 5, and 6 are not used.
SES
RS-232
A
D
0
A
D
1
12
Up position
Down position
345678
A
D
2
S
P
1
S
P
2
B
D
R
D
L
Y
R
M
T
Ranges
Switch
IDs 0-11
IDs 16-27
IDs 32-43
IDs 48-59
IDs 64-75
IDs 80-91
IDs 96-107
IDs 112-123
Down
Down
Down
Down
Down
Down
Down Down
Up Down
DownUp
Up Up
UpDown
UpUp Down
UpUp
UpUp Up
A
D
0
A
D
1
A
D
2
4200F.book Page 8 Thursday, January 23, 2003 2:47 PM