Meridian Data 16i User Manual

EMD

storage

EXCEL
MERIDIAN
DATA, INC.

SecurStor 16i

iSCSI to SATA-II
RAID Subsystem

Installation and Hardware

Reference Manual

For all technical support assistance:

Phone: [phone] or [phone]

Web: http://www.emdstorage.com

SecurStor 16i Installation and Hardware Reference Manual

Contact Information

Company Address: Excel Meridian Data, Inc.

3220 Commander Drive, Suite 101
Carrollton, Texas 75006, U.S.A.

Phone: [phone] or [phone]

Fax: [phone]

URL: www.EMDStorage.com
Hours: Mon-Fri 7:30am to 6:30pm Central Time

Copyright 2006

This Edition First Published 2006

All rights reserved. This publication may not be reproduced, transmitted, transcribed,
stored in a retrieval system, or translated into any language or computer language, in
any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written consent of Excel Meridian Data.

Disclaimer

Excel Meridian Data makes no representations or warranties with respect to the
contents hereof and specifically disclaims any implied warranties of merchantability
or fitness for any particular purpose. Furthermore, Excel Meridian Data reserves the
right to revise this publication and to make changes from time to time in the content
hereof without obligation to notify any person of such revisions or changes. Product
specifications are also subject to change without prior notice.

Trademarks

Excel Meridian Data and the Excel Meridian logo are registered trademarks of Excel
Meridian Data, Inc. SecurStor 16i and other names prefixed with “EMD” and “SS”
are trademarks of Excel Meridian Data, Inc. PowerPC® is a trademark of
International Business Machines Corporation and Motorola Inc. Solaris and Java ar e
trademarks of Sun Microsystems, Inc. All other names, brands, products or services
are trademarks or registered trademarks of their respective owners.

RMA Policy

Please visit www.emdstorage.com for a detailed explanation of our RMA policy.

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SecurStor 16i Installation and Hardware Reference Manual

Warnings and Certifications

Restricted Access Location:

This equipment is intended to be installed in a RESTRICTED ACCESS LOCAT IO N only .

Electric Shock Warning!

To Prevent Electric Shock:
Access to this equipment is granted to trained operators and service personnel only. Only

modules housed in hot-swap canisters are field-serviceable. Accessing the backplane can
cause electric shock.

FCC (applies in the U.S. and Canada)

FCC Class B Radio Frequency Interference Statement

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 (47 CFR, Part
2, Part 15 and CISPR PUB. 22 Class B). These limits are designed to
provide reasonable protection against harmful interference when the
equipment is operated in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with this user’s guide, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, you are 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 into 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.

This device complies with Part 15 of FCC Rules. Operation is subject to the
following two conditions: 1) this device may not cause harmful interference,
and 2) this device must accept any interference received, including
interference that may cause undesired operation.

Warning:

A shielded power cord is requir ed in ord er to meet FC C emission limit s and
also to prevent interference with nearby radio and television reception.

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SecurStor 16i Installation and Hardware Reference Manual

Use only shielded cables to connect I/O devices to this equipment. You are
cautioned that changes or modifications not expressly approved by the party
responsible for compliance could void your authority to operate the
equipment.

This device is in conformity with the EMC.

CB

(Certified Worldwide)

This device meets the requirements of the CB standard for electrical
equipment with regard to establishi ng a satisfactory level of safety for
persons using the device and for the area surrounding the apparatus. This
standard covers only safety aspects of the above apparatus; it does not
cover other matters, such as style or performance.
For Power Supplies’ compatibility to China Compulsory Certification.

CCC

ITE BSMI Class A,

This device is in conformity with UL standards for safety .

Disposal of Old Electrical & Electronic Equipment (Applicable in the
European Union and other European countries with separate collection
systems)

This symbol on the product or on its packaging indicates that this product
shall not be treated as household waste. Instead it shall be handed over to
the applicable collection point for the recycling of electrical and
electronic equipment. By proper waste handling of this product you
ensure that it has no negative consequences for the environment and
human health, which could otherwise be caused if this product is thrown
into the garbage bin. The recycling of materials will help to conserve
natural resources.

For more details information about recycling of this product, please
contact your local city office, your household waste disposal service or
the shop where you purchased the product.

CNS 13438 (for Taiwan)

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SecurStor 16i Installation and Hardware Reference Manual

Safety Precautions

Precautions and Instructions

• Prior to powering on the subsystem, ensure that the correct power range is being

used.

• The SecurStor 16i subsystem comes with 16 drive bays. Leaving any of these

drive bays empty will greatly affect the efficiency of the airflow within the
enclosure, and will consequently lead to the system overheating, which can
cause irreparable damage.

• If a module fails, leave it in place until you have a replacement unit and you are

ready to replace it.

• Airflow Consideration: The subsystem requires an airflow clearance, especially

at the front and rear. The airflow direction is from front to back.

• Handle subsystem modules using the retention screws, eject levers, and the metal

frames/face plates. Avoid touching PCB boards and connector pins.

• To comply with safety, emission, or thermal requirements, none of the covers or

replaceable modules should be removed. Make sure that all enclosure modules
and covers are securely in place during operation.

• Be sure that the rack cabinet into which the subsystem chassis will be installed

provides sufficient ventilation channels and airflow circulation around the
subsystem.

• Provide a soft, clean surface to place your subsystem on before working on it.

Servicing on a rough surface may damage the exterior of the chassis.

• If it is necessary to transport the subsystem, repackage all drives separately.

• Dual-redundant controller models come with two controller modules that must

be installed into the subsystem. Single controller modules come with a single
controller module and a metal sheet is placed over the lower controller bay at the
rear of the subsystem. Since single-controller modules cannot be upgraded, this
metal sheet should NEVER be removed.

ESD Precautions

Observe all conventional anti-ESD methods while handling system modules. The
use of a grounded wrist strap and an anti-static work pad are recommended. Avoid
dust and debris in your work area.

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SecurStor 16i Installation and Hardware Reference Manual

About This Manual

This manual:

 Introduces the SecurStor 16i Subsystem series.
 Describes all the active components in the system.
 Provides recommendations and details about the hardware installation

process of the subsystem.

 Briefly describes how to monitor the subsystem.
 Describes how to maintain the subsystem.

This manual does not:

 Describe components that are not user-serviceable.
 Describe the configuration options of firmware, using terminal

emulation programs, or the RAIDWatch GUI that came with your
subsystem.

 Give a detailed description of the RAID processing units or the RAID

controllers embedded within the subsystem.

Who should read this manual?

This manual assumes that its readers are experienced with computer
hardware installation and are familiar with storage enclosures.

Related Documentation

• Generic Operation Manual

• Quick Install Guide

Conventions

Naming

From this point on and throughout the rest of this manual, the SecurStor 16i
series is referred to as simply the “subsystem” or the “system” and
SecurStor is frequently abbreviated as “SS.”

Important Messages

Important messages appear where mishandling of components is possible or
when work order can be misconceived. These messages also provide
important information associated with other aspects of system operation.
The word “important” is written as “IMPORTANT,” both capitalized and
bold and is followed by text in italics. The italicized text is the message to
be delivered.

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SecurStor 16i Installation and Hardware Reference Manual

Warnings

Warnings appear where overlooked details may cause damage to the
equipment or result in personal injury. Warnings should be taken seriously.
Warnings are easy to recognize. The word “warning” is written as
“WARNING,” both capitalized and bold and is followed by text in italics.
The italicized text is the warning message.

Cautions

Cautionary messages should also be heeded to help you reduce the chance
of losing data or damaging the system. Cautions are easy to recognize. The
word “caution” is written as “CAUTION,” both capitalized and bold and is
followed by text in italics. The italicized text is the cautionary message.

Notes

These messages inform the reader of essential but non-critical information.
These messages should be read carefully as any directions or instructions
contained therein can help you avoid making mistakes. Notes are easy to
recognize. The word “note” is written as “NOTE,” both capitalized and bold
and is followed by text in italics. The italicized text is the cautionary
message.

Steps

Steps are used to describe sequential steps of a specific work procedure.
Adherence to the sequential steps can guarantee effectiveness and lower the
chance of failure.

Lists

Bulleted Lists: Bulleted lists are statements of non-sequential facts. They
can be read in any order. Each statement is preceded by a round black dot
“•.”

Numbered Li sts: Numbered lists are used to describe sequential steps you
should follow in order.

Software and Firmware Updates

Please contact Excel Meridian Data for the latest software or firmware updates. NOTE that
the firmware version installed on your system should provide the complete functionality listed
in the specification sheet/user’s manual. We provide special revisions for various application
purposes. Therefore, DO NOT upgrade your firmware unless you fully understand what a
firmware revision will do.

Problems that occur during the updating process may cause unrecoverable errors and system
down time. Always consult technical personnel before proceeding with any firmware upgrade.

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SecurStor 16i Installation and Hardware Reference Manual

Table of Contents

ONTACT INFORMATION ..................................................................................................... II

C

COPYRIGHT 2006 ..................................................................................................................II

Disclaimer........................................................................................................................... ii

Trademarks.........................................................................................................................ii

RMA Policy.........................................................................................................................ii

WARNINGS AND CERTIFICATIONS ....................................................................................IIIV

TABLE OF CONTENTS ........................................................................................................VIII

CHAPTER 1 NTRODUCTION

1.1 PRODUCT OVERVIEW ............................................................................................ 1-1

1.1.1 Product Introduction..........................................................................................1-1

1.1.2 Enclosure Chassis............................................................................................. .1-2

1.1.2.1 Chassis Overview...............................................................................................1-2

1.1.2.2 Physical Dimensions ..........................................................................................1-3

1.1.2.3 Front Panel Overview.........................................................................................1-3

1.1.2.4 Hard Drive Numbering........................................................................................1-4

1.1.2.5 Rear Panel Overview.........................................................................................1-4

1.1.2.6 Backplane Board................................................................................................1-5

1.2 SUBSYSTEM COMPONENTS....................................................................................1-5

1.2.1 Drive Trays.........................................................................................................1-6

1.2.2 The RAID Controller Module ..............................................................................1-6

1.2.3 Controller Module Interfaces ..............................................................................1-7

1.2.4 DIMM Module.....................................................................................................1-8

1.2.5 BBU....................................................................................................................1-8

1.2.6 Power Supply Units............................................................................................1-8

1.2.7 Cooling Modules.................................................................................................1-9

1.3 SUBSYSTEM MONITORING .................................................................................. 1-10

1.3.1 I2C bus.............................................................................................................1-10

1.3.2 LED Indicators..................................................................................................1-10

1.3.3 Firmware (FW) .................................................................................................1-11

1.3.4 Audible Alarms.................................................................................................1-11

1.4 HOT-SWAPPABLE COMPONENTS......................................................................... 1-11

1.4.1 Hot-swap Capabilities.......................................................................................1-11

1.4.2 Components.....................................................................................................1-12

1.4.3 Normalized Airflow...........................................................................................1-12

CHAPTER 2 HARDWARE INSTALLATION

2.1 INTRODUCTION...................................................................................................... 2-1

2.2 SAFETY PRECAUTIONS .......................................................................................... 2-1

2.3 GENERAL INSTALLATION PROCEDURE ................................................................ 2-3

2.3.1 Installation Procedure Flowchart........................................................................2-4

2.4 UNPACKING THE SUBSYSTEM...............................................................................2-4

2.5 INSTALLATION OVERVIEW...................................................................................2-4

2.6 BBU INSTALLATION .............................................................................................2-5

2.6.1 BBU Module Installation Overview.....................................................................2-5

2.6.2 BBU Warnings and Precautions.........................................................................2-5

2.6.3 Installation Procedure.........................................................................................2-5

2.7 HARD DRIVE INSTALLATION................................................................................ 2-7

2.7.1 Hard Drive Installation Prerequisites..................................................................2-7

2.7.2 Hard Drive/Drive Tray Installation.......................................................................2-7

2.8 RACK/CABINET INSTALLATION ............................................................................2-9

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SecurStor 16i Installation and Hardware Reference Manual

CHAPTER 3 SUBSYSTEM MONITORING

3.1 SUBSYSTEM MONITORING OVERVIEW ................................................................ 3-1

3.2 STATUS-INDICATING LEDS .................................................................................. 3-2

3.2.1 Brief Overview of the LEDs................................................................................3-2

3.2.2 Drive Tray LEDs.................................................................................................3-2

3.2.3 Controller Module LEDs .....................................................................................3-3

Restore NVRAM Defaults – a Push Button......................................................................3-4

3.2.4 Ethernet Port LEDs............................................................................................3-5

3.2.5 BBU Module LED...............................................................................................3-6

3.2.6 PSU LEDs..........................................................................................................3-6

3.2.7 Cooling Module LEDs.........................................................................................3-7

3.3 AUDIBLE ALARM .................................................................................................. 3-8

3.3.1 Default Threshold Values...................................................................................3-8

3.3.2 Failed Devices....................................................................................................3-9

3.4 I2C MONITORING.................................................................................................. 3-9

CHAPTER 4 SUBSYSTEM CONNECTION AND OPERATION

4.1 CONNECTION OVERVIEW ..................................................................................... 4-1

4.1.1 Cabling...............................................................................................................4-1

4.1.2 Network Topologies............................................................................................4-2

4.1.3 Points of Failure .................................................................................................4-2

4.2 HOST CONNECTION TOPOLOGIES........................................................................4-2

4.2.1 Sample Topology – Direct-Attached, Dual-path Connection ..............................4-2

4.3 POWER ON............................................................................................................ 4-5

4.3.1 Check List...........................................................................................................4-6

4.3.2 Power On Procedure..........................................................................................4-6

4.3.3 Power On Enclosure ..........................................................................................4-6

4.3.4 Power On Status Check.....................................................................................4-7

4.4 POWER OFF PROCEDURE ..................................................................................... 4-8

CHAPTER 5 SUBSYSTEM MAINTENANCE AND UPGRADING

5.1 OVERVIEW ............................................................................................................5-1

5.1.1 Maintenance......................................................................................................5-1

5.1.2 General Notes on Component Replacement......................................................5-1

5.2 REPLACING CONTROLLER MODULE COMPONENTS ........................................... 5-2

5.2.1 Overview............................................................................................................5-2

5.2.2 Notes on Controller Module Maintenance..........................................................5-3

5.2.3 Removing the Controller Module........................................................................5-3

5.2.4 Replacing the Controller Module........................................................................5-5

5.3 REPLACING OR UPGRADING MEMORY MODULES .............................................. 5-6

5.3.1 Memory Module Installation Overview................................................................5-6

5.3.2 Selecting the Memory Modules..........................................................................5-6

5.3.3 DIMM Module Installation...................................................................................5-7

5.4 REPLACING A FAULTY BBU.................................................................................5-8

5.4.1 BBU Warnings and Precautions.........................................................................5-9

5.4.2 Replacing a Faulty BBU.....................................................................................5-9

5.5 REPLACING A FAILED PSU MODULE ................................................................. 5-12

5.5.1 Notes on PSU Module Maintenance ................................................................5-12

5.5.2 Replacing the PSU Module...................................................................... ........5-13

5.6 COOLING MODULE MAINTENANCE................................................................... 5-15

5.6.1 Notes on Cooling Module Maintenance............................................................5-15

5.6.2 Replacing a Cooling Module.............................................................................5-16

5.7 REPLACING A FAILED HARD DRIVE ................................................................... 5-18

5.7.1 Hard Drive Maintenance Overview...................................................................5-18

5.7.2 Replacing a Hard Drive....................................................................................5-19

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SecurStor 16i Installation and Hardware Reference Manual

APPENDIX A TECHNICAL SPECIFICATIONS

A.1 TECHNICAL SPECIFICATIONS...............................................................................A-1

System Weight..................................................................................................A-1

Vibration............................................................................................................ A-2

A.2 CONTROLLER SPECIFICATIONS ...........................................................................A-3

A.2.1 Configuration.....................................................................................................A-3

A.2.2 Architecture.......................................................................................................A-3

A.3 DRIVE TRAY SPECIFICATIONS .............................................................................A-4

A.4 POWER SUPPLY SPECIFICATIONS ........................................................................A-4

A.5 COOLING MODULE SPECIFICATIONS...................................................................A-4

A.6 RAID MANAGEMENT...........................................................................................A-5

A.7 FAULT TOLERANCE MANAGEMENT.....................................................................A-5

APPENDIX B PINOUTS

B.1. D-SUB 9 AND AUDIO JACK PINOUTS.........................................................................B-1

B.1.1. COM1 Serial Port Cable....................................................................................B-1

B.1.2. COM2 Serial Port Cable to UPS........................................................................B-2

B.2. NULL MODEM ............................................................................................................B-2

B.3. ETHERNET PORT PINOUTS.........................................................................................B-3

B.4. STP LAN CABLE........................................................................................................B-4

B.5. MAIN POWER .............................................................................................................B-4

APPENDIX C UNINTERRUPTIBLE POWER SUPPLY

C.1 UNINTERRUPTIBLE POWER SUPPLY OVERVIEW.................................................C-1

C.2 COMPATIBLE UPS SUPPLIES................................................................................C-1

C.3 SERIAL COMMUNICATION CABLE........................................................................C-1

C.4 CONNECTING THE UPS TO THE SUBSYSTEM.......................................................C-1

C.4.1 Connect the PSU Module Power Cords ............................................................C-1

C.4.2 Set the Baud Rate.............................................................................................C-2

C.4.3 Connect COM2..................................................................................................C-2

C.5 POWER ON............................................................................................................C-2

C.6 UPS STATUS MONITORING ..................................................................................C-3

C.6.1 Normal Operational Status ................................................................................C-3

C.6.2 UPS Messages..................................................................................................C-3

C.6.3 UPS Message Summary...................................................................................C-4

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1.1 Product Overview

1.1.1 Product Introduction

This chapter briefly introduces the SecurStor 16I iSCSI-to-SATA-II storage
subsystem. The SecurStor 16i subsystem comes with four (4) GbE host ports capable
of large I/O transfers over iSCSI packets.

EMD Storage’s iSCSI storage supports
network initiators compatible with the
IETF iSCSI standard (RFC 3720) with
the following functionalities:

Chapter 1

Introduction

 Access control via

IQN and IP

 CHAP security
 Jumbo frames
 Header Digest mode

Internet SCSI (iSCSI) protocols are embedded in firmware and I/Os are rapidly
processed via dedicated algorithms. The iSCSI storage is built around reliable
hardware and sophisticated RAID technologies. I/O requests are packaged and
transmitted over local area networks (LANs), wide area networks (WANs), or the
Internet using the existing networking hardware and thus the total cost of ownership
is reduced. With the help of the networking flexibility, the subsystem is ideal for
location-independent data storage, backup, and retrieval.

The subsystem delivers extreme performance that result from the combined
performance of multiple disk drives and the level of data protection unseen in other
iSCSI storages. Featuring all standard RAID functionalities as other SecurStor
subsystems, the SS 16i subsystem provides a reliable platform for IT operations such
as backup, data-mining, or str a te g ic a llocation.

This subsystem features a high-density architecture that supports up to sixteen (16)
hot swappable, SATA-II hard drives in a 3U-profile chassis. The subsystem is
powered by a RAID controller board featuring the latest ASIC400, RAID6 ASIC as
the XOR engine. The pre-installed 512MB DDR RAM DIMM module can be
upgraded to a 2GB capacity DIMM to support complicated applications that hold
numerous ID/LUN combinations.

Figure 1-1: SecurStor 16i Subsystem

The controller board is housed in a metal canister and is referred to as the “controller
module.” The controller module is comprised of a main circuit board, an interface
faceplate, and a metal canister. The controller module is accessed through the rear of
the SecurStor 16i with the help of ejection levers. An optional battery backup unit

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SecurStor 16i Installation and Hardware Reference Manual

(BBU) is now equipped with an EEPROM that helps record the installation date and
notify system administrators if the battery’s life expectancy is reached. The BBU is
hot swappable and is accessed through the controller’s faceplate.

Four (4) RJ-45 connectors connect the subsystem to network switches or Ethernet
ports of independent devices. Dual-redundant, hot-swappabl e cooling modules and
power supplies protect the subsystem from overheating and the down time by power
outage. The modular nature of the subsystem and the easy accessibility to all major
components ensure the ease of the subsystem maintenance.

NOTE:

On receiving and unpacking your subsystem, please check the
package contents against the included Unpacking Checklist. If
any modules are missing, please contact your vendor
immediately.

1.1.2 Enclosure Chassis

1.1.2.1 Chassis Overview

The SecurStor 16I RAID storage is housed in a 3U metal chassis that is
divided into front and rear sections. Key components are respectively
accessed through the front (see
The enclosure chassis can be mounted into a standard 19-inch rack or
enclosure cabinet using support brackets that are separately-purchased.

Figure 1-3) and rear (see Figure 1-4) panels.

NOTE:

Components accessed through the front panel are referred to as “Front
Panel Components” and components accessed through the rear panel are
referred to as “Rear Panel Components.”

1-2

Chapter 1 Introduction

Figure 1-2: Locations of Key Components

1.1.2.2 Physical Dimensions

The SecurStor 16I comes in a 3U chassis with the following dimensions:

 With handles: 483mm (W) x 131mm (H) x 504.3mm (L) (19 x 5.2

x 21 inches)

 Without handles: 445mm x 130mm x 487mm (17.5 x 5.1 x 19.2

inches)

1.1.2.3 Front Panel Overview

The front section of the subsystem features a 4x3 layout for twelve (12) 3.5­inch drives. The two (2) handles on the front of the subsystem enable you to
easily insert/extract the chassis into/from a rack or cabinet. The front panel
of the SecurStor 16I RAID subsystem described in this manual is shown in
Figure 1-3. A description of each front panel component is given below:

Figure 1-3: SecurStor 16I Front View

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SecurStor 16i Installation and Hardware Reference Manual

The front panel shown in Figure 1-3 accommodates the following
components:

• Drive bays with drive tray canisters: The drive bays house the

SecurStor 16I hard drives.

• Forearm handles: The subsystem has right and left handles for

easier rackmounting and handling.

1.1.2.4 Hard Drive Numbering

The front section of the SecurStor 16I enclosure houses sixteen (16) hard
drives in a 4x4 configuration. When viewed from the front, the drive bays
(slots) are numbered 1 to 16 from left to right and then from top to bottom.

Figure 1-4: Hard Drive Numbering

1.1.2.5 Rear Panel Overview

The rear section of the SecurStor 16I subsystem is accessed through the rear
panel and is reserved for a single RAID controller module, one (1) optional
BBU, two (2) power supply units (PSUs), and two (2) cooling modules.

A rear view is of the subsystem is shown below. Descriptions of each rear
panel component are given below:

Figure 1-5: SecurStor 16I-2 Rear View

The rear panel shown in
components:

• RAID controller module: The RAID controller module

manages all functionalities provided with the subsystem,
and all interface connectors are on located on the
controller’s faceplate. (See Section

Figure 1-5 accommodates the following

0)

1-4

Chapter 1 Introduction

• BBU module: An optional BBU module sustains

unfinished writes cached in memory during a power

outage in order to prevent data loss. (See Section

• PSU modules: The hot-swappable PSUs receive single-

phase power and deliver +5V, +12V, and +3.3V power to
the subsystem. A power switch is located on each PSU to
turn the system on and off. (See Section

• Cooling modules: The redundant cooling modules

ventilate the subsystem to maintain a cooling airflow
across the subsystem. (See Section

0)

0)

0)

1.1.2.6 Backplane Board

An internal backplane board separates the front and rear sections of the
SecurStor 16I. The PCB board consists of traces for logic level signals and
low voltage power paths. It contains no user-serviceable components.

WARNING!

When inserting a removable module, DO NOT USE EXCESSIVE
FORCE! Forcing or slamming a module can damage the pins on the

module connectors either on the module itself or on the backplane. Gently
push the module until it reaches the end of module slot. Feel the contact
resistance and use slightly more pressure to ensure the module connectors
are correctly mated. If the module comes with ejection levers or retenti on
screws, use them to secure the module.

1.2 Subsystem Components

The SecurStor 16I houses many active components and most of them can be accessed
through either the front or rear panel. The modular design of the active components
facilitates their easy installation and removal. Hot-swap mechanisms are incorporated
to eliminate power surges and signal glitches that might occur while removing or
installing these modules.

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SecurStor 16i Installation and Hardware Reference Manual

1.2.1 Drive Trays

Figure 1-6: Drive Tray Front View

The SecurStor 16I subsystem comes with sixteen (16) drive trays (see
Figure 1-6) designed to accommodate separately purchased, standard 1-inch
pitch, 3.5-inch SATA-II disk drives. The drive bays are accessible from the
enclosure front panel. Two (2) LEDs on the front bezel indicate the
operating statuses. A key-lock on each drive tray secures the hard drive in
place, while a release button enables fast retrieval of a hard drive.

WARNING!

Be careful not to warp, twist, or contort the drive tray in any way (e.g., by
dropping it or resting heavy objects on it). The drive tray has been
customized to fit into the drive bays of the subsystem. If the drive bay
superstructure is deformed or altered, the dri ve trays may not fit into the
drive bays.

1.2.2 The RAID Controller Module

The default size for the DDR RAID controller module is 512MB. RAID
controller module contains a main circuit board, a preinstalled 512MB
capacity or above DDR RAM DIMM module, and the controller module
interfaces. The controller module contains no user-serviceable components
and should never be removed or opened, except when installing/upgrading
the cache memory inside.

WARNING!

Although the RAID controller can be removed, the only time you should
touch the controller itself is to install the memory modules. The RAID
controller is built of sensitive components and unnecessary tampering can
damage the controller.

The heart of the SecurStor 16I RAID controller subsystem is the iSCSI-to­SATA controller board. The controller comes with four (4) GbE Ethernet
host ports. The subsystem connects to the host through RJ-45 connectors,
while the connectors are also ready to connect to one or more network

1-6

Chapter 1 Introduction

switches, enabling access to your storage volumes in complex

configurations such as data-sharing or network zoning.

The docking connector at the rear of the controller board connects the
controller module to the backplane board. A DDR RAM DIMM socket is
strategically placed in an easily accessible location on the controller board
for easy insertion of the DDR R AM DIMM module.

1.2.3 Controller Module Interfaces

All external interfaces that connect to external devices are located on the
controller module rear panel shown below. The interfaces are listed below.

Figure 1-7: Controller Module Interfaces – 2-port version

 Host ports: Four (4) Gigabit Ethernet host ports (simulated and

indicated as CH0 to CH3 in the diagram shown above) connect the
SecurStor subsystem to the networked iSCSI initiators through RJ­45 connectors.

 COM port: The controller module comes with two (2) COM ports.

The serial ports are used for local access to the firmware embedded
configuration utility and the connection to a UPS device.

 LED indicators: Six (6) LED indicators illustrate the system

statuses for system monitoring. Please see Chapter 3 for more
information.

 Ejection Levers: Two (2) ejection levers located on the sides of

the controller ensure that the back-end connectors are properly
seated in the module slot and properly mated with the backplane.

 Management LAN Port: Another 10/100BaseT Ethernet port

connects the subsystem to a management computer. Available
management interfaces include: telnet, Java-based RAIDWatch
manager, or the web-based manager invoked by an http console.

 Restore Default LED and button: The push button and LED are

used to restore firmware defaults in cases when upgrading

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SecurStor 16i Installation and Hardware Reference Manual

firmware or if an administrator forgets system password. For more
details, please refer to Chapter 3.

1.2.4 DIMM Module

The controller module comes with a preinstalled 512MB capacity or above
DDR RAM DIMM module and the allocable size can reach 2GB. The
memory socket is located on the side of the controller board.

1.2.5 BBU

An optional, separately purchased Li-ION battery backup unit (BBU)
module (see the diagram below) can sustain cache memory for days during
the event of power outage. The battery module comes with an EEPROM
that marks the installation date, and system administrators will be notified
when the one-year left expectancy is reached. Please refer to Section 2.6 for
installation instructions.

Figure 1-8: BBU Module

In accordance with international transportation regulations, the BBU module
is only charged to between 35% and 45% of its total capacity when shipped.
Therefore, when powering on the subsystem for the first time (see Section

4.4) the BBU will begin to charge its batteries to their full capacity. It
normally requires approximately twelve (12) hours for the battery to be fully
charged. If the battery is not fully charged after twelve (12) hours, there may
be a problem with the BBU module. You may re-install the battery; and if
the battery still shows problems with charging, contact your subsystem
vendor for a replacement. While the battery is being charged, the LED on
the BBU will start flashing. (See Chapter 3.2.6 for details on the LED
indicators.)

You can check battery’s charge level using the RAIDWatch software or the
embedded firmware utility.

1.2.6 Power Supply Units

The subsystem is equipped with two (2) redundant, hot-swappable, 530W
PSUs, which are installed into the rear section of the chassis. The PSU is
permanently mounted into a 2U (dual-level) bracket especially designed to
house both the PSU and a cooling module, which is mounted at the end of
the 2U bracket.

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Chapter 1 Introduction

NOTE:

Hot-swapping the PSU also removes the cooling module at the lower
slot.

As shown in Figure 1-9, each PSU comes with a power socket and a power
switch to turn the subsystem on and off. Two (2) embedded cooling fans
provide sufficient airflow. A single LED indicates the PSU status. When a
power supply failure occurs, the red LED lights come on. A rejection handle
at the rear of the PSU is especially designed to help properly install or
remove the module.

A screw hole on the ejection handle helps secure the PSU to the chassis.

Figure 1-9: PSU Module

Please refer to Appendix B for the technica l inf ormation of the PSUs.

1.2.7 Cooling Modules

Two cooling modules are implemented within the rear sections of PSU
modules. (see
levels. When the subsystem operates normally, the cooling fans operate at
the lower speed. If a major component fails or when one of the temperature
thresholds is violated, the cooling fans automaticall y raise its rotation speed.

More technical information can be found in Appendix B.

Figure 1-10.) The cooling fans operate at two (2) fan speed

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SecurStor 16i Installation and Hardware Reference Manual

Figure 1-10: Cooling Module

1.3 Subsystem Monitoring

The iSCSI RAID subsystem comes with a number of different monitoring methods
that provide you with continual updates on the operating statuses of the subsystem
and individual components. The following monitoring features are included:

1.3.1 I2C bus

The following subsystem elements are interfaced to the RAID controller

2

over a non-user-serviceable I

• Cooling modules

• Module presence detection circuits

• Temperature sensors (for detecting the temperature of the

backplane board and controller board)

C bus:

1.3.2 LED Indicators

The following components come with LEDs to indicate the operating
statuses of individual components:

• RAID controller

• BBU module

• Cooling modules (on PSU faceplates)

• PSU modules (1 LED on each module)

• Drive trays (2 LEDs on each tray)

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Chapter 1 Introduction

1.3.3 Firmware (FW)

Firmware: The firmware is pre-installed software used to configure the

subsystem. The latest firmware functionalities include Task Scheduler,
Intelligent Drive Handling, and Media Scan. Media Scan handles low
quality drives in both the degraded mode and during the rebuild process.
Maintenance tasks will then be performed on an entire array or specific hard
drives. Various options are user-configurable such as priority, start time, and
execution intervals. For more information, please refer to the Generic
Operation Manual in the product utility CD.

1.3.4 Audible Alarms

The subsystem comes with an audible alarm that is triggered when a
component fails or when the pre-configured temperature or voltage
thresholds are exceeded. Whenever you hear an audible alarm, it is
imperative that you determine the cause and rectify the problem
immediately.

Event notification messages indicate the completion or status of array
configuration tasks and are always accompanied by two (2) or three (3)
successive and prolonged beeps.

WARNING!

Failing to respond when an audible alarm is heard can lead to
permanent damage to the subsystem. When an audible alarm is
heard, rectify the problem as soon as possible.

1.4 Hot-swappable Components

1.4.1 Hot-swap Capabilities

The subsystem comes with a number of hot-swappable components. A hot-swap
component is one that can be exchanged while the subsystem is still online without
affecting the operational integrity of the subsystem. These components should only
be removed from the subsystem when they are being replaced. At no other time
should these components be removed from the subsystem.

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SecurStor 16i Installation and Hardware Reference Manual

1.4.2 Components

The following components are hot-swappable:

• Power supply units (PSUs)

• BBU module

• Hard disk drives

1.4.3 Normalized Airflow

Proper cooling is referred to as “normalized” airflow. Normalized airflow ensures the
sufficient cooling within the subsystem and is only attained when all components are
properly installed. Therefore, a failed component should only be removed when a
replacement is available. If a failed component is removed but not replaced, airflow
will disrupted and perm a ne n t damage to the subsystem can result.

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Chapter 1 Introduction

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Chapter 2

Hardware Installation

2.1 Introduction

This chapter gives detailed instructions on how to install the subsystem. When installing the
subsystem, it is necessary to mount the chassis into a rack cabinet and to install hard drives
and drive trays. Installation into a rack or cabinet should occur before the hard drives or drive
trays are installed into the subsystem.

CAUTION!

Please note that the installation instructions described in this manual
should be carefully followed to prevent any difficulties and damage to
your subsystem.

2.2 Safety Precautions

1. Disconnect the power cords if the need should arise for cleaning the

chassis. Do not use liquid or sprayed detergent for cleaning. Use a
lightly moistened clothe for cleaning.

2. Be sure the correct power range (100-120 or 220-240VAC) is supplied

by your rack cabinet or power outlet. It is highly recommended to
connect two different power supplies to separate power sources; e.g.,
one to a power outlet, and the other to a UPS system.

3. Thermal notice: All drive trays (even if they do not contain a hard

drive) must be installed into the enclosure. Leaving a drive bay or
module slot open will severely affect the airflow efficiency within the
enclosure, and will consequently lead to system overheating. Keep a
faulty module in place until you have a replacement unit and you are
ready to replace it.

4. Rack-mounting: The subsystem is intended to be rack-mounted.

Following concerns should be heeded when mounting the enclosure
into a rack cabinet:

a. An enclosure without disk drives can weigh over 60 pounds.

Two (2) people are required to install or relocate the
subsystem. Drives should be removed from the enclosure
before moving the subsystem.

Hardware Installation

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SecurStor 16i Installation and Hardware Reference Manual

b. The subsystem is designed to operate in an environment where

the ambient temperature around the chassis must not exceed
104°F.

c. The openings on the enclosure are for air circulation and hence

the ventilation openin g s sh ould never be obstructed.

d. Proper grounding, over-current protection, and stability

features should be provided with the rack cabinet into which
the subsystem is mounted.

5. Operate the subsystem in an environment with low humidity.

6. Make sure the voltage of the power source is within the rated values as

indicated by the label attached to the power supplies before connecting
the subsystem to the power source. You may also refer to the Appendix
A of this manual for technical details.

7. Airflow considerations: The subsystem requires an airflow clearance

especially on the front and the rear sides. For proper ventilation, a
minimum of 1 inch is required between the front of the enclosure and
rack cover; a minimum of 2 inches is required between the enclosure
and end of the rack cabinet.

8. Handle the system modules by the retention screws, eject levers, or the

modules’ metal frames/faceplates only. Avoid touching the PCB boards
and connector pins.

9. None of the covers or replaceable modules should be removed in order

to maintain compliance with safety, emission, or thermal requirements.

10. If the subsystem is going to be left unused for a long time, disconnect

the subsystem from mains to avoid damages by transient over-voltage.

11. Never open the subsystem top cover, unless directed to do so by EMD

Support.

12. Always secure every enclosure module by its retaining screws or make

sure it is held in place by i ts latches or hand screws.

13. Always make sure the subsystem has a safe electrical earth connection

via power cords or chassis ground by the rack cabinet.

14. Be sure that the rack cabinet in which the subsystem chassis is to be

installed provides sufficient ventilation channels and airflow circulation
around the subsystem.

15. If it is necessary to transport the subsystem, repackage all disk drives

separately.

16. If one of the following situations arises, get the enclosure checked by

service personnel:

a. Any of the power cords or pl ugs is damaged.
b. Liquid has penetrated into the subsystem.
c. The enclosure has been exposed to moisture.

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Chapter 2 Hardware Installation

d. The subsystem does not work well or you cannot get it work

according to this manual.

e. The subsystem has dropped and been damaged.
f. The subsystem shows obvious signs of breakage.

2.3 General Installation Procedure

Following all the instructions provided below can save subsystem installation time. Detailed,
illustrated instructions for each component are given in the following sections.

CAUTION!

To ensure that your system is correctly installed, please follow the steps
outlined below. If you follow these steps, installation will be fast and
efficient. If you do not follow these steps, you may accidentally install the
hardware incorrectly.

Step 1. Unpack: Unpack the subsystem.

Step 2. Install an optional BBU: If an optional BBU has been

separately purchased, it should be installed prior to
operating the subsystem. (See Section

Step 3. Rack/Cabinet installa tion: If the subsystem is going to be

installed in a rack or cabinet, it should be installed prior to
installing the hard drives. Installing the subsystem into a
rack or cabinet requires at least two (2) people. (See

Section

0)

Step 4. Install drive trays: After the hard drives have been

installed into the drive trays, the drive trays must be
installed into the enclosure itself.

Step 5. Cable connection: Use the power cords that came with the

subsystem to connect the subsystem to the main power
source. Use self-purchased RJ-45 cables (see Chapter 4 for
more details) to connect host ports to the network or
external devices.

Step 6. Power up: Once the components have been properly

installed and all cables are properly connected, you can
power up the subsystem and configure the RAID array.
(See Section 4.4)

0)

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SecurStor 16i Installation and Hardware Reference Manual

2.3.1 Installation Procedure Flowchart

Figure 2-1 shows a flowchart of the installation procedure. As you complete
each step, check off the “Done” box on the right. Please use this flowchart
in conjunction with the instructions that follow.

Figure 2-1: Installation Procedure Flowchart

2.4 Unpacking the Subsystem

Unpack the unit, drives, and accessories.
Accessory items include an RS-232C audio jack cable, power cords, a null modem, and a

product utility CD containing the RAIDWatch program .

2.5 Installation Overview

You must install the following components:

 Hard drives (SATA-I or SATA-II disk drives)
 BBU module (if ordered)

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2.6 BBU Installation

2.6.1 BBU Module Installation Overview

The BBU module is an optional item that can sustain cache memory in the event of a
power failure or in the unlikely event of failing both PSUs. A BBU is highly
recommended. The optional BBU provides additional data security and helps
minimize the loss of data during power shutdowns.

The BBU module is inserted into a module slot on the controller module. The BBU
module is secured with two (2) retention screws. When shipped, the BBU module
slot is covered with a dummy plate that must first be removed.

2.6.2 BBU Warnings and Precautions

 Do not use nor leave the BBU near a heat source. Heat can melt the

insulation and damage other safety features of battery cells, possibly
leading it to acid leak and result in flames or explosion.

 Do not immerse the BBU in water nor allow it to get wet. Its protective

features can be damaged. Abnormal chemical reactions may occur,
possibly causing functional defects, acid leak, and other hazardous
results.

Chapter 2 Hardware Installation

 Do not disassemble or modify the BBU. If disassembled, the BBU

could leak acid, overheat, emit smoke, burst and/or ignite.



Do not pierce the BBU with a sharp object, strike it with a hammer, step

on it, or throw it. These actions could damage or deform it, internal
short-circuiting can occur, possibly causing functional defects, acid
leak, and other hazardous results.



If the BBU leaks, gives off a bad odor, generates heat, becomes

discolored or deformed, or in any way appears abnormal during use,
recharging or storage, immediately remove it from the subsystem and
stop using it. If this is discovered when you first use the BBU, return it
to Infortrend or your system vendor.

2.6.3 Installation Procedure

To install a BBU into the controller module, please follow these steps:

Step 1. Prior to installing the BBU module, power off the

subsystem or restart the subsystem after installation. For
power off procedures, please refer to Section 4.4.

Step 2. Use a screwdriver to loosen the two (2) retention screws

located on both sides of the dummy plate. (See

2)

Figure 2-

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SecurStor 16i Installation and Hardware Reference Manual

Figure 2-2: Loosening the BBU Retention Screws

Step 3. Once the retention screws are loosened, gently retrieve the

dummy plate out of the enclosure. (See

Figure 2-3)

Figure 2-3: Removing the BBU Slot Dummy Plate

NOTE:

It may be difficult to remove the dummy plate as it is embedded in the
subsystem chassis. If you are unable to dislodge the sheet, wedge the
head of a flat-head screwdriver between the metal sheet and the chassis
and then gently nudge the metal sheet out of the chassis.

Step 4. Install the BBU module. Align the BBU module with the

BBU module slot and gently insert the BBU module until
the back of the BBU module reaches the end of the slot.
Use slightly more force so that the back-end connector can
mate with the backplane.

Step 5. Secure the BBU module to the chassis. Fasten the two (2)

retention screws on the BBU module to secure the BBU
module to the chassis. (See

2-6

Figure 2-4)

Figure 2-4: Installing the BBU Module

2.7 Hard Drive Installation

2.7.1 Hard Drive Installation Prerequisites

Chapter 2 Hardware Installation

CAUTION!

The hard drives and drive trays should only be installed into the
subsystem after the subsystem has been mounted into a rack cabinet. If
the hard drives are installed first, the subsystem will be too heavy to
handle and the possible impact during installation may damage your
drives.

WARNING!

Handle hard drives with extreme care. Hard drives are very delicate.
Dropping a drive against a hard surface (even from a short distan ce)
and hitting or touching the circuits on the drives with your tools may
cause damage to the drives.

WARNING!

All drive trays must be installed into the enclosure even if they do not
contain a hard drive. If the trays are not installed into the enclosure, the
ventilation airflow will not be normalize d and the subsystem will overheat.

2.7.2 Hard Drive/Drive Tray Instal la tion

Formatted: Bullets and Numbering

Step 1. Make sure the rotary bezel lock is in the unlocked

position, i.e., the groove on its face is in a horizontal

orientation. If the groove is in a vertical position, as shown

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SecurStor 16i Installation and Hardware Reference Manual

in Figure 2-5, then the bezel lock is locked and the front
flap on the drive tray cannot be opened.

Figure 2-5: Front View of an Individual Dri v e Tray

Step 2. Open the front flap on the drive tray. (See Figure 2 -6)

Push the release button on the drive tray. The front flap
will spring open.

Figure 2-6: Drive Tray Release Button

Step 3. Align the drive tray with the slot in which you wish to

insert it making sure that it is properly aligned within the
drive bay. Gently slide it in until the drive tray reach the
end of drive bay. This should be done smoothly and
gently. (See

Figure 2-7)

Figure 2-7: Installing a Drive Tray

Step 4. Close the front flap on the drive tray. Make sure the front

flap is closed properly to ensure that the SATA connector
at the back of the drive tray is properly mated with the

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Chapter 2 Hardware Installation

corresponding connector on the backplane board. If the

front flap is not closed properly, the connection between

the hard drive and the subsystem may come loose and
mysterious drive signals may result.

Step 5. Lock the flap into place by turning the key-lock until the

groove on its face is pointing down (vertical orientation).
(See

Figure 2-8)

Figure 2-8: Drive Tray Key-lock Rotation

Step 6. Once the drive bays are populated and the subsystem

powered on, the RAID controller will automatically spin
up the hard drives and recognize their presence.

2.8 Rack/Cabinet Installation

The subsystem is designed to fit into a variety of 19-inch rack cabinets or
racks. Make sure you have an appropriate site location and cables prepared
with adequate lengths to connect to mains and other devices.

The subsystem should be installed in the rack or cabinet before the hard
drives and the drive trays are installed. If the drive trays with the associated
hard drives are installed, the subsystem will be too heavy to mount into a
rack or cabinet. When installing the subsystem into a rack or cabinet it is
advisable that two (2) people assist in the mounting process.

For details on the use of the rackmount rails, please refer to the installation
instructions that came with them.

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Chapter 3

Subsystem Monitoring

3.1 Subsystem Monitoring Overview

The SecurStor 16i subsystem is equipped with a variety of self-monitoring features that help
to keep subsystem managers informed of the subsystem operational statuses. These
monitoring features provide vital feedback to help you maintain the operational integrity of
the subsystem. Prompt response to warnings and subsystem component failure notifications
will ensure data integrity and help ensure the longevity of the subsystem.

Self-monitoring features include:



Firmware (FW): The RAID controller in the subsystem is managed by
preinstalled FW, which can be accessed using a PC hyper-terminal connected
through the COM1 serial port. Device status information can be obtained from
the FW-embedded configuration utility. The FW is fully described in the Manual
that came with your system. Please refer to this manual for furthe r information.

Formatted: Bullets and Numbering

Formatted: Bullets and Numbering



RAIDWatch: RAIDWatch is a fully integrated, Graphical User Interface (GUI)
installed with the firmware, which can be used to monitor and maintain the
subsystem locally or remotely over TCP/IP network. Connection to RAIDWatch
is made using the 10/100BaseT management port.

The RAIDWatch Panel View can be customized to display a graphical representation of the
subsystem components in the content panel of the RAIDWatch screen. Panel View allows you
to quickly determine the operational status of critical components. Please refer to the
RAIDWatch User’s Manual for further details.

NOTE:

etailed installation instructions for RAIDWatch Manager are given in the
AIDWatch User’s Manual.

 LEDs: Device-status-indicating LEDs are located on all important modules.

These LEDs inform you of the integrity of a given component or a
host/management link. You should become familiar with the various LEDs and
be aware of their functions. (See Section



Audible alarm: An audible alarm is present on the subsystem controller board
and will be triggered if any of a number of threatening events occurred. These
events usually jeopardize the functional and operational integrity of the
controller board and must be heeded at all times. Events such as a breaching of
the temperature threshold will trigger the alarm. If a subsystem manager is
present, the manager should use the RS-232 terminal console to determine the
cause of the alarm and take appropriate corrective measures. (See Section

0)

0)

Formatted: Bullets and Numbering

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SecurStor 16i Installation and Hardware Reference Manual

 Inter-Integrated Circuit (I2C): The I2C serial bus is used to connect various

temperature sensors and presence detection circuits within the chassis.

Subsystem monitoring is a necessary part of subsystem management. If failure events or other
disruptive ev ents are detected and report ed, the subsystem managers must take appropriate
actions to rectify the problem. Failure to act in a properly specified manner to a system event
(like overheating) can cause severe and permanent damage to the subsy s tem.

3.2 Status-indicating LEDs

3.2.1 Brief Overview of the LEDs

The following devices all come with LEDs that inform sub system managers about
the operational status of the component.

Component LEDs per Unit Total LEDs Definition

Formatted: Bullets and Numbering

Drive Trays

Controller
Module

Ethernet
Ports

BBU Module

(if BBU is
installed)

PSU Module

Cooling
Module

2 32 See Section 0

7 7 See Section 0

2 10 (5 ports)

1 1 See Section 0

1 2 See Section 0

2 4 See Section 0

Table 3-1: LED Distribution

LED definitions are given in the following sections.

Formatted: Bullets and Numbering

3.2.2 Drive Tray LEDs

Two (2) LED indicators are located on the right side of each drive tray. (See Figure
3-11) Refer to

message, you should check the drive tray indicators to find the correct location of the
failed drive. Replacing the wrong drive can fail two members of a logical array
(RAID 3/5) and thus destroy data in the array.

Table 3-2 for the LED definitions. When notified by a drive failure

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Chapter 3 Subsystem Monitoring

Figure 3-11: Drive Tray LEDs

Name Color Status

FLASHING indicates data is being written
to or read from the drive. The drive is busy.

Drive Busy

Blue

OFF indicates that there is no activity on the
disk drive.

GREEN indicates that the drive bay is

Power Status

Green/

Red

populated.

RED indicates that the disk drive has failed.

Table 3-2: Drive Tray LED Definitions

Formatted: Bullets and Numbering

3.2.3 Controller Module LEDs

The LEDs on the rear-facing faceplate of the RAID controller are shown in Figure 3-

12. The LEDs on the controller’ s faceplate that can be accessed from the rear of the

enclosure are numbered from 1 to 6. The definitions are shown below.

Figure 3-12: Controller Module LEDs

Name Color Status

Ctlr Status

Green/

Amber

Green indicates that the RAID subsystem is

operating healthily.

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SecurStor 16i Installation and Hardware Reference Manual

Amber indicates that a component failure
has occurred, or inappropriate RAID
configurations have caused system faults.

ON indicates that there are certain amounts

C_Dirty Amber

Temp. Amber

of cached data held in memory.
OFF indicates that the cache is clean.

ON indicates that the detected

CPU/board/chassis temperature has exceeded
the higher temperat ure threshold.

OFF indicates that the detected temperature
reading is within the preset safe range.

BBU Link Green

Hst Bsy Green

Drv Bsy Green

Restore
Default

Green

Table 3-3: Controller LED Definitions

ON indicat es the presence of a BBU backup
module.

Rapidly Blinking to indicate traffic on the
host bus.

Rapidly Blinking to indicate traffic on the
drive channels.

Lit Green to indicate the RAID

configuration default has been successfully
restored. The LED state will be invalidated
after a few seconds.

Note that restoring default will not affect the
existing RAID configuratio ns of disk drives.

Restore NVRAM Defaults – a Push Button

CAUTION!

The Restore NVRAM Default push button is a function that carries some
risks. Firmware restoration will not destroy the existing logical drive
configurations; however, if the existing logical drives cannot be
adequately associated with host ID/LUNs after firmware default
restoration, data loss or inconsistencies might occur.

There is a non-latch type push button accessed through a round opening underneath
the Restore Default LED.

1. Before pressing this button to restore firmware defaults, it is highly advised

to make a list of the existing ID/LUN mapping information. You will need
the list for restoring ID/LUN mapping after restoring defaults. Default
restoration will erase the ID/LUN mapping associations (e.g., which logical
drive is associated with which host ID/LUN), and it is necessary to restore

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Chapter 3 Subsystem Monitoring

the host ID/LUN mapping after firmware default restoration in order to

access data on the previously configured arrays.

2. Some of the latest firmware updates may be incompatible with the firmware

currently running on your subsystem. These updates may require restoring
firmware defaults before firmware upgrade can actually take place. Before
using the button, it is highly advised to practice the following:

 Stop host I/Os,
 Backup your data,
 Make a list of host ID/LUN mapping information for future

references.

You may also jot down the configured parameters such as the performance
preferences, specific stripe sizes, etc.

3. The third condition that requires restoring defaults is when an administrator

forgets the password configured to control the access to a RAID subsystem.
Before pushing this button, also practice the steps listed above. You can
access array information even without a password.

How to use the button?

After the subsystem is powered down, you can use a straighten paper-clip to
press the button. Press and hold down the button, power on the subsystem,
and wait for the LED to light up to indicate system defaults have already
been restored.

3.2.4 Ethernet Port LEDs

4. GbE host ports, which provide different connection speeds, are located on
the controller faceplate. Shielded or non-shielded, Cat5e straight-through
Ethernet cables can be used to connect the RJ-45 ports to the network. Two
(2) LEDs located on each Ethernet port indicate the Ethernet connection
speed and link status. See the diagram below for the locations of the two (2)
LED indicators. Refer to

Name Color

Speed Green

Table 3-5 for the LED definitions.

Figure 3-13: GbE LAN Indicators

Status

ON indicates currently connected with GbE
speed, OFF means connected with 10/100
speed.

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SecurStor 16i Installation and Hardware Reference Manual

LAN Activity Green

Table 3-4: GbE LAN Port LED Definitions

ON for linked.
BLINKING indicates active transmission.

Figure 3-14: 10/100BaseT Management Port Indicators

Name Color

Link Status Green

LAN Activity Green

Table 3-5: 10/100BaseT Management Port LED Definitions

ON indicates currently connected to a

LAN.
BLINKING indicates active transmission.

Status

Formatted: Bullets and Numbering

3.2.5 BBU Module LED

The BBU module has an LED on its faceplate. (See Figure 3-15) The function is the
same as the similar LED on the controller module. The LED is off when the BBU is
functioning normally and is able to sustain the cache memory. The LED flashes to
indicate the BBU is charging. If the LED is illuminating amber, the BBU may have
lost its ability to hold electrical charge. You should then contact your vendor to
verify the problem.

Figure 3-15: BBU Module LED

3.2.6 PSU LEDs

Each PSU comes with a single LED at the back (see Figure 3-16), located close to
the power switch that turns on the subsystem. This LED indicates the operational
status of the PSU module. Please refer to the PSU LED definitions shown in

6.

3-6

Table 3-

Formatted: Bullets and Numbering

Chapter 3 Subsystem Monitoring

Figure 3-16: PSU Module LED

Color Status

Steadily
Blinking
Green

Static Green

Static Red

OFF

3.2.7 Cooling Module LEDs

Each individual cooling fan within the cooling module has one (1) red LED on the
PSU module. The LED corresponds to the single fan in the cooling module. (See
Figure 3-17) When the LED is on, it indicates the fan has failed. When the LED is
off, it indicates the fan is functioning properly.

The power supply has not been turned on. The PSU
module LED will blink when the subsystem is
connected to a power source but not yet turned on.

The PSU is operating normally and experiencing no
problem.

The PSU has failed and is unable to provide power to
the subsystem.

The PSU is not turned on and the power cord is
disconnected.

Table 3-6: PSU Module LED Definitions

Formatted: Bullets and Numbering

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SecurStor 16i Installation and Hardware Reference Manual

Figure 3-17: Cooling Module LEDs and Cooling Fan Locations

The subsystem has a novel approach to stabilizing the temperature within the
subsystem: When the intelligent sensors on the backplane detect elevated
temperature, such as high ambient temperature or the failure of any cooling or PSU
module, the system will turn the cooling fans to high speed to extract more heat.
Once the ambient temperature cools down to normal or the failed modules have been
replaced, the cooling fans will return to low speed.

3.3 Audible Alarm

Different controller environmental and operational parameters (like temperature, etc.) have
been assigned a range of values between which they can fluctuate. If either the upper or lower
thresholds are exceeded, an audible alarm will automatically be triggered. The alarm will also
be triggered when an active component on the subsystem fails. If the SecurStor 16i manager is
onsite and hears an alarm, the manager must read the error message on the PC terminal or
RAIDWatch screen to determine what has triggered the alarm. After determining what has
occurred, the SecurStor 16i manager must take appropriate actions to rectify the problem.

WARNING!

If an alarm is triggered it is necessary for you to determine the p roblem.
If the audible alarm is ignored and the problem is not rectified,
unexpected damage may oc c u r .

3.3.1 Default Threshold Values

Table 3-7 shows the default threshold values for the EMD SecurStor 16i
subsystem. If any of these values are surpassed, the alarm will sound:

Formatted: Bullets and Numbering

Formatted: Bullets and Numbering

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Chapter 3 Subsystem Monitoring

+3.3V

+5V

+12V

CPU Temperature

Controller Board
Temperature

Enclosure Ambient
Temperature

Upper Threshold Lower Threshold

+3.6V +2.9V

+5.5V +4.5V

+13.2V +10.8V

90ºC 5ºC

80ºC 5ºC

40ºC 0ºC

Table 3-7: Default Threshold Values

Formatted: Bullets and Numbering

3.3.2 Failed Devices

If any of the following components fails, the audible alarm will be triggered:

• RAID controller module

• Cooling fan modules

• PSU modules

• BBU module

• Hard disk drives

NOTE:

When temperature exceeds a preset threshold, the controller’s charger
circuits will stop charging. You will then receive a message that says
“Thermal Shutdown/Enter Sleep Mode.” When the temperature falls
back within normal range, the battery will resume charging.

3.4 I2C Monitoring

The operating status of PSU and cooling fan modules are collected through an I2C serial bus.
If either of these modules fails, the failure will be detected and you will be notified through
the various methods described above.

Deleted: ¶

3-9

Subsystem Connection and Operation

4.1 Connection Overview

4.1.1 Cabling

Following are the requirements on the type of cables used to connect the subsystem’s iSCSI host
ports:

1. Gigabit Ethernet network cables.

2. Cat5e STP type cables or better performance types (important for meeting the

requirements imposed by emission standards).

3. Straight-through Ethernet cables with RJ-45 plugs.

4. Use of cross-over cables can also automatically be detected and re-routed for a valid

connection.

Chapter 4

Connection:

1. Directly to iSCSI initiators or through Gigabit Ethernet switches.

2. To servers equipp ed with an iSCSI HBA, and then to cli ent stations with an Ethernet

NIC or iSCSI HBA.

3. The subsystem presents its logical capacity volumes through SCSI-like IDs and LUNs.

These RAID volumes then appear as iSCSI targets through the net wo rk.

NOTE:

Even though iSCSI initiator software is a cost-effective way of building iSCSI SAN,
software initiator adds additional workload to the server processor. It is recommended
to apply iSCSI HBAs that come with TCP/IP offload engines in order to reduce
overhead.

System Connection an d Operation 4-1

SecurStor16i Installation and Hardware Reference Manual

WARNING!

All cables must be handled with care. Make sure Ethernet cables do not run parallel
with power cords. To prevent interference within a rack system, the cable routing path
must be carefully planned and they must not be bent.

4.1.2 Network Topologies

The iSCSI host ports connect to Ethernet network devices and iSCSI initiators that
comply with the IETF iSCSI standard (RFC 3720). Network conn ection of the EMD SS16i

subsystem’s iSCSI ports is flexible. The use of network connecting devices, subnet, Name
Servers, or iSCSI management software can vary from case to case. In the following sections,
configuration diagrams will be provided to illustrate the possible uses of the EMD SS16i
subsystem in an iSCSI network.

Note that these configurations only r ecommend but do not intend to impose limitations on the use
of subnet settings or networking paths to servers.

4.1.3 Points of Failure

The primary concern for configuring host-side topologies is that points of failure should be
avoided. It is therefore preferred that the host side be connect ed to two (2) HBAs and better not the
onboard Ethernet. Data flow and access management should therefore be implemented to avoid
access contention. MPIO software can be implemented in order to discover a capacity volume
through an alternate data link in the event of cabling failure.

4.2 Host Connection Topologies

4.2.1 Sample Topology – Direct-Attached, Dual-path Connection

In the configuration shown in Figure 4-1, one (1) EMD SecurStor16i subsystem is connected to
two (2) servers. These servers are equipped with iSCSI HBAs and using the subsystem as the
shared storage. Multiple arrays or logi cal partitions can be created and made available separately
through different ID/LUNs on the host ports.

Note the following with the configuration as diagrammed below:

1. The RAIDWatch management software accesses a subsystem through its IP address. A

management station running RAIDWatch can access the array through the 10/100BaseT
management port.

2. Configuration of each po rt connection into a subnet isolates each iSCSI host link , decreases

overheads, and eliminates the impact of link failure.

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Chapter 4: Subsystem Connection and Operation

3. Different storage volumes are made available on host ports. Different volumes can be

separately optimized for different I/O characteristics.

4-3

Figure 4-1: Sample Topology: Multiple Servers Each with Dual Connections

SecurStor16i Installation and Hardware Reference Manual

4.2.2 iSCSI Topo logy and Host LUN Mapping:

Configuration Details:

1. A logical drive can be associated with several SCSI IDs on separate channels making it a

RAID volume accessed through different data paths. The default ID on every host channel is
ID#0. More can be created if the need arises.

2. You can manually include or exclude specific iSCSI initiators from the access list to you

iSCSI arrays. A nu mber of acc ess cond ition ing facto rs can b e inclu ded: IQN, NetMask value,
CHAP, and IP addresses can be associated with a RAID array (a logical drive). In this way,
only the authorized host adapters can access your arrays.

3. In the sample below, 2 logical drives are created each out of 8 member drives. Depending on

your demands for logi cal capacity volumes, specific array p arameters such as optimization
modes, spare drives, RAID level, and stripe size/width, can be specified when creating logical
drives.

4. Subnet can be created to reduce overheads and provide access security. LAN configuration is

beyond the scope of this hardware manual.

5. Multiple arrays or multiple partitions can be created and made available separ ately through

different ID/LUNs on the host ports. The RAID volumes appear as shared storage over the
Ethernet network.

6. To ensure the optimal performance, make sure you connect the iSCSI RAID to a high speed

Gigabit Ethernet network.

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Chapter 4: Subsystem Connection and Operation

Figure 4 - 2: Sample Topology: Connection and Host LUN Mapping

4.3 Power On

Once all the components have been installed in the EMD subsystem, the iSCSI ports have been connected
to the network, power on the network devices, the subsystem, and then power on the servers/iSCSI
initiators.

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SecurStor16i Installation and Hardware Reference Manual

4.3.1 Check List

BEFORE powering on the EMD subsystem, please check the following:

 Memory Modules – Memory modules have been correctly installed on the controller

boards. You may skip this if you have not changed the pre-installed module.

 BBU Modules – If used, that the BBU module has been installed correctly.
 Hard Drives – Hard drives have been correctly installed on the drive trays.
 Drive Trays – ALL the drive trays, whether or not they have a hard drive, have been

installed into the subsystem.

 Cable Connections – The iSCSI ports on the subsystem have been correctly

connected to the initiators or the Ethernet network.

 Power Cords – The power cords have been connected to the PSU modules on the

subsystem and plugged into main power.

 Ambient Temperature – All the subsystem components have been acclimated to the

surrounding temperature.

4.3.2 Power On Procedure

When powering on the EMD subsystem, please follow these steps.

Step 1. P ower on the network connection devices.

These devices include the Ethernet switches, iSCSI HBAs, and any
other such devices that have been connected to the EMD SS16i
subsystem. Please refer to the documentation that came with your
network device to see the power on procedure.

Step 2. Power on the EMD subsystem.

The EMD subsystem should only be powered on after all the network
connection devices have been powered on. Consult your network
administrators for proper network configurations. The power on
procedure for the EMD subsystem is described below.

Step 3. Power on the initiators.

The servers or iSCSI initiators should be the last devices that are turned
on. Please refer to th e documentation that came with your appl ication
servers to see their own power on procedures.

4.3.3 Power On Enclosure

To power on the subsystem, turn on the two power switches located on the rear panel of the
subsystem. (See
switches are turned on. There is no limitation on which PSU should be powered on first.

4-6

Figure 4-3) Each switch controls a single PSU; therefore make sure that both

Figure 4-3: Power Switches

CAUTION!

Although the PSUs are redundant and a single PSU can provide sufficient power to
the subsystem, it is advisable to turn both of the power switches on. If only one PSU is
operating and fails, system operation will be terminated.

4.3.4 Power On Status Check

Once the subsystem has been powered on, the status of the entire subsystem should be checked to
ensure that everything is running smoothly and that there are no complications or malfunctions.

Chapter 4: Subsystem Connection and Operation

 Controller Module LEDs – The controller ready LED should flash green.
 Drive Tray LEDs – The drive status LEDs (that contain hard drives) sh ould all

lights blue.

 Firmware and RAIDWat ch – The overall status of the system may be checked

using the embedded firmware utility or the RAIDWatch GUI screen.

 Audible Alarm - If any errors occur during the initialization process, the onboard

alarm will sound in a hastily repeated manner.

Drive tray LEDs should normally start flashing right after power-on, indicating the RAID
control unit is attempting to access the hard drives.

NOTE:

The subsystem has been designed to run continuously. Even if a component failure
occurs the fault can be corrected online.

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SecurStor16i Installation and Hardware Reference Manual

4.4 Power Off Procedure

To power down the EMD subsystem, please follow these steps:

NOTE:

When powering down the EMD subsystem, please ensure that no time-consuming
processes, like a “Logical Drive Parity Regeneration” or a “Media Scan,” are taking
place.

Step 1. Stop I/O access to the system.

Stop all I/O accesses to the SS16i subsystem. Please refer to the related
documentation of your applications.

Step 2. Flush the cache.

Locate the Cache_Dirt y LED on the back of controller mod ule to check if t here
is data cached in the memory. Use the Shutdown Controller function to flush all
cached data. This prepares the RAID subsystem to be safely powered down.

Step 3. Turn off the power.

Turn off the power. Onc e the RAID subsystem has been powered down, other
devices connected to the subsystem can be powered down.

4-8

Subsystem Maintenance and Upgrading

5.1 Overview

5.1.1 Maintenance

Constant monitoring and maintenance of your SS16i subsystem will minimize subsystem
downtime and preserve the working integrity of the system for a longer period of time. If any of
the subsystem components fail, they must be replaced as soon as possibl e.

WARNING!

Do not remove a failed component from the subsystem until you have a replacement
on hand. If you remove a failed component without replacing it, the internal airflow
will be disrupted and the system will overheat causing dam age to the subsystem.

All of the following components can be replaced in case of failure:

Chapter 5

1. Controller module – Section

2. Memory modu le – Section

3. BBU module - Section

4. PSU modules – Section

5. Cooling fan modules (bundled with PSU modules, not separately available) – Section

6. Hard drives – Section

0

0

0

5.5

5.7

5.1.2 General Notes on Component Replacement

 With the exception of the RAID controller module, all of the components on the

SS16i subsystem, including the PSU modules (along with the cooling modules
within), and drive trays, are hot-swappable and can be replaced while the subsystem
is still in operation.

 Qualified engineers who are familiar with the SS16i subsystem should be the only

ones who make component replacements. If you are not familiar with the subsystem
and/or with RAID subsystem mai ntenance in gener al, it is strongly advise d that you
refer subsystem maintenance to a suitably qualified maintenance engineer.

 Normalized airflow is directly dependent on the presence of all subsystem

components. Even if a subsystem co mponent fails, it should not be removed from the
subsystem until a replacement is readily at hand and can be quickly installed.
Removing a subsystem component without replacing it can lead to permanent
subsystem damage.

0

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SecurStor 16i Installation and Hardware Reference Manual

 When replacing any hot-swappable component, caution should be taken to ensure

that the components are handled in an appropriate manner. Rough or improper
handling of components can lead to irreparable damage.

 When removing a RAID controller module from the subsystem, ensure that your

applications running on servers have been properly closed, users notified of the down
time, all cached writes conducted, etc. Ensure that power has been turned off and that
all precautionary measures, without exception, are adhered to. The controller board is
very sensitive and can be easily damaged.

WARNING!

When inserting a removable module, take heed that DO NOT USE EXCESSIVE
FORCE! Forcing or slamming a module can damage the connector pins either on the

module itself or on the backplane. Gently push the module until it reaches the end of
module slot. Feel the contact resistance and use slightly more force to ensure the
module connectors a re correctly mated. I f the module comes wi th rejection levers o r
retention screws, use them to secure the module.

5.2 Replacing Controller Module Components

5.2.1 Overview

The controller module consists of the following components:

 DIMM Module The DIMM module can be replaced when a DIMM module

fails or if a larger capacity DIMM is required.

 BBU If the BBU has lost its ability to hol d electr ic charge, replace i t

with a certified module. With the new BBU that comes with
ASIC400 models, an EEPROM is implemented and that
system administrators will be notified by system events when
the approximate one-year life expectancy is reached.

WARNING!

1. The BBU is hot-swappable and can be independently swapped from the

controller. However, the BBU is installed into a metal bracket on the
controller module. When the controller is removed, the BBU is also removed.

2. It is recommended to remove the BBU from the chassis before handling the

controller because the BBU needs to discharge the charge built up from
supporting the cache memory. If you replace a DIMM module with supplied
voltage, damage may occur.

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Chapter 5: Subsystem Maintenance and Upgrading

5.2.2 Notes on Controller Module Maintenance

 The controller module contains a DIMM module for cache buffer. When replacing the

controller module, the DIMM module can be removed and used on the replacement
controller if they are known to be good.

 When replacing the controller module, you must remember that the controller board is

one of the most sensitive components in the EMD SS16I subsystem. All previously
stipulated safety precautions (see Chapter 2) must be strictly adhered to. Failure to
adhere to these precautions can result in permanent damage, resulting in timely delays.

 For your own safety and that of the subsystem, make sure that no power is being

supplied to the system prior to replacing the controller module.

5.2.3 Removing the Controller Module

To remove the controller module:

Step 1. Prepare a clean, static-free work pad or container into which to

place the controller that will be removed from the chassis.

Step 2. Make sure there is no data access to the subsystem to avoid losing

data. Stop all I/O accesses to the subsystem and make sure all cached
writes have been distributed to disk drives.

Step 3. Power off the subsystem. If possible, power off the subsystem in the

way described in Chapter 4. Be sure to flush all cached data before
powering off the subsystem. If it is not possible to do this turn off
both PSU modules and disconnect the power cords.

Step 4. Disconnect all cables that are connected to the controller module you

wish to replace. Thes e include the Ethernet cables connected to the
network, and any cable connected to the RS-232C audio jack
connector.

Step 5. Remove the BBU module if one has been installed. Loosen the BBU

module’s retention screws and then retrieve it from the chassis.

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SecurStor 16i Installation and Hardware Reference Manual

Figure 5-1: Loosening the Retention Screws from the BBU Module

Step 6. Loosen the retention screws from controller. Use a medium-size

Phillips screwdriver to remove the screws underneath each of the
ejection levers. Keep the screws for future use.

Figure 5-2: Loosening the Retention Screws from the Controller Module

Step 7. Disconnect all cables from the controller module. These include the

cables connecting to host or cascaded subsystems, and any cables
connecting the COM ports.

Step 8. Remove the controller module by pressing down the two ejection

levers. The controller will automatically be eased out of the module
bay. Gently pull the controller module out of the subsystem with one
hand underneath to support the weight of the module.

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Chapter 5: Subsystem Maintenance and Upgrading

Figure 5-3: Removing the Controller Module from Chassis

5.2.4 Replacing the Controller Module

If the controller module has failed, replace a failed controller with a replacement from your
vendor:

Step 1. Remove the failed controller. (See Section 0) If the DIMM module is

undamaged it can be removed (See Section

0) and reused on the new

controller module.

Step 2. Install a DIMM module o n the new cont roller modul e. (See Section

0)

Step 3. Insert the controller module. Align the controller module with the

controller module b ay at the rear of the su bsystem, making sure that
the levers are down. Gently slide the controller module in.

Step 4. Secure the connection. Once the controller reaches the end and you

feel the contact resistance, you can life up the levers on the sides. The
levers will ensure that the back-end connectors are properly mated.

Step 5. Fasten the hand screws. Once fully inserted secure the controller

module to the chassis by fastening the retention screws through the
holes underneath the ejection lever.

Step 6. Re-attach all the cables that you previously removed. These include

the cables that connect to the local network or iSCSI initiators that
were previously attached to the iSCSI ports, and any cable that was
attached to the RS-232C audio jack connector.

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SecurStor 16i Installation and Hardware Reference Manual

Step 7. Power up the subsystem.

5.3 Replacing or Upgrading Memory Modules

5.3.1 Memory Module Installation Overview

 The subsystem comes with a pre-installed 512MB (or above) DDR RAM DIMM

module. The controller supports a memory module up to 2GB in size. If DDR
RAM DIMM modules with a different size need to be used or the original
memory module is damaged in some way, the pre-installed module can be
removed and a replacement installed. Replacement and installation instructions
are described fully below.

 A DIMM socket is located on the controller main circuit board. The controller

board is a sensitive component and must be treated with care.

WARNING!

The controller board in the controller module is a sensitive item. Please ensu re that all
anti-static precautions stipulated above are strictly adhered to. Only qualified
engineers should replace the DIMM module.

5.3.2 Selecting the Memory Modules

If the memory module on the SS16i controller module is going to be replaced, the following
factors must be consid ered when purchasing replacement DIMM modules:

 Purchasing a DIMM module: To avoid the compatibility issues, it is

recommended to contact EMD for an updated list of compatible DIMM
modules. We provide tested modules from reliable vendors with reliable chips.

 DDR RAM DIMM modules supported: The subsystem supports 184-pin,

registered, ECC-capable DDR RAM DIMM modules with memory capacities
ranging from 512MB to 2GB.

 Installation considerations: When installing the DIMM module, it is necessary

to remove the controller module. The controller board is more susceptible to
damage than other components and must therefore be handled with extreme
care. ALL anti-static precautions specified in Section 2.3 must be strictly
adhered to.

 Secure installation: When replacing the DIMM module, make sure that the new

DIMM module is firmly in place prior to installing the controller module. If the
DIMM module is not firmly in place, the subsystem will not run and the
controller will need to be removed and the DIMM module correctly installed.

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Chapter 5: Subsystem Maintenance and Upgrading

5.3.3 DIMM Module Installation

WARNING!

The pre-installed modules must be removed prior to installing new modules. Do this
with care. Sensitive components can be damaged during the process.

Step 1. Prepare an anti-static work pad or container for placing a removed

module. Use of an ESD grounding strap is highly recommended.

Step 2. Remove the BBU module, if installed. Carefully place the module for

it contains Li-ion batteries. Do not drop it to the floor or place it near
any heat source or fire.

Step 3. Remove the controller module. See Section 0.

Step 4. Remove the previously installed DIMM module from the DIMM

socket. To do this, push the white module clips on either side of the
DIMM socket down. By doing this, the previously installed modules
will be ejected from the DIMM socket. (See

Figure 5-4)

Figure 5-4: Removing a DIMM Module

Step 5. Gently pull the DIMM module out of the DIMM socket.

Step 6. Insert the replacement module into the DIMM socket. Make sure the

white clips of the DIMM socket are in the open positions. Align the
DIMM module with the DIMM socket by checking its “keyed”

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SecurStor 16i Installation and Hardware Reference Manual

position. Once aligned, gently and firmly push the DIMM module into
the socket. The white clips on the sides of the socket will close
automatically and secure the DIMM module into the socket.

Step 7. Reinstall the controller module. After the DIMM module has been

properly installed, install the RAID controller. To do this, al ign the
controller module with the controller module bay. Then gently push
the controller module in the controller bay. Carefully push the
controller until you feel the contact when the board edge connectors
are being mated to the backplane. Do not use force. If unusual contact
resistance is felt, try it again. Use the ejection levers on the sides of
the controller to secure it into the chassis.

When the controller is inserted with the lever at its the lowest position,

notches on the levers should properly clinch to the round metal
protrusions on the interior walls of module bay. You may then pull the
lever upward to secure the controller into module bay.

Step 8. Next secure the control ler modul e into t he subs ystem by f astenin g the

screws through holes underneath each ejection lever.

5.4 Replacing a Faulty BBU

The BBU is an optional item for the subsystem that can sustain cache memory in the event of a power
failure or in the unlikely event of failing both PSUs. The BBU provides additional data security and helps
minimize the chance of losing data due to power outages.

A BBU consists of a met al bracket, battery cell pack, and a PCB boar d that connects to the controller
module. Each BBU is secured to the subsystem using retention screws. Please read the BBU handling
precautions below before proceeding with th e replac ement procedure.

Fault Conditions:

A BBU failure can result from the following:

1. A BBU has lost its abil ity to hold electrical ch arge. This may be the case aft er the

battery cells have been recharged for many times regardless of how long the module
has been used. Therefore, a stable power source is important for system operation.

2. The charger circuitry implemented with the controller has failed.

There are other conditions that might trigger the BBU fault events and trigger the BBU fault LED:

1. The temperature sensor embedded with the subsystem’s charger circuit reports a

temperature reading exceeding the preset threshold. The charger circuits will enter a
low-power and self-protection state.

2. A BBU module has been charged for over twelve (12) hours. A timer is embedded

with the charger. Wh en this occurs, the charger will enter a t imer fault state. The
fault condition usually occurs with a brand new BBU or with a totally discharged

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Chapter 5: Subsystem Maintenance and Upgrading

BBU. Charging will resume automatically if you remove and re-install the BBU
module.

5.4.1 BBU Warnings and Precautions

 Install or replace the BBU with BBUs supplied by your EMD vendors only. Use

of battery cells provided otherwise will void our warranty.

 Always dispose of a replaced battery in an ecologically responsible manner.

Dispose of used BBUs at authorized battery disposal sites only.

 Do not use or leave the BBU near a heat source. Heat can melt the insulatio n and

damage other safety features of battery cells, possibly will cause acid leak and
result in flames or explosion.

 Do not immerse the BBU in water nor allow it to get wet. Its protective features

can be damaged. Abnormal chemical reactions may occur, possibly cause
functional defects, acid leak, and other hazardous results.

 Do not disassemble or modify the BBU. If disassembled, the BBU could leak

acid, overheat, emit smoke, burst and/or ignite.

 Do not pierce the BBU with a sharp object, strike it with a hammer, step on it, or

throw it. These actions could damage or deform it and internal short-circuiting
can occur, possibly cause functional defects, acid leak, and other hazardous
results.

 If a BBU leaks, gives off a bad odor, generates heat, becomes discolored or

deformed, or in any way appears abnormal during use, recharging or storage,
immediately remove it from the subsystem and stop using it. If this is discovered
when you first use the BBU, return it to EMD.

5.4.2 Replacing a Faulty BBU

To replace the BBU, please follow these steps:

Step 1. Remove the faulty BBU from the chassis. The BBU module is

secured to the chassis with two (2) screws. Loosen the retention
screws located at the sides of the BBU faceplate, then pull out the
BBU. (See

5-9

Figure 5-5)

SecurStor 16i Installation and Hardware Reference Manual

Figure 5-5: Remove the Retention Screws from BBU Fa ceplate

Figure 5-6: Remove the BBU Module

Step 2. Install the replacement BBU. After the faulty BBU has been

removed, the new BBU module can be installed. To do this, align the
BBU module with the empty slot, and then gently push the BBU
module into the slot. (See

Figure 5-7)

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Chapter 5: Subsystem Maintenance and Upgrading

Figure 5-7: Install the BBU Module

Step 3. Secure the BBU module to the enclosure. Tighten the two (2)

retention screws as shown above using a Phillips screwdriver.

Step 4. Reset the subsystem. Find appropriate time to reset the subsystem for

the subsystem firmware to recognize the replacement module. After
reset, the BBU LED will start flashing to indicate that the BBU is
being charged. When the BBU is fully charged, the LED will be off.

NOTE:

1. A new or replacement BBU takes approximately seven (7) hours to charge to

its full capacity. Reset the subsystem whenever a BBU is replaced or added in
order for the replacement module to take effect.

2. The life expectancy of a BBU is more than one year. However, it is

considered a safe procedure to replace the BBU every year. Follow the
procedures above to replace a used BBU with a replacement in order to
maintain the fault tolerance feature.

3. The chance of BBU charger failure is comparatively low. If the cause of a

failure cannot be determined even after a BBU module is replaced, contact
your system vendor for a replacement controller and return the controller
module through EMD’s standard RMA procedure.

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SecurStor 16i Installation and Hardware Reference Manual

5.5 Replacing a Failed PSU Module

5.5.1 Notes on PSU Module Maintenance

 Two (1+1) redundant PSU modules: The subsystem comes with two fully

redundant, hot-swappable PSU modules. These modules are located at the rear
section of the subsystem.

 PSU canister: Each PSU mod ule is housed in a robust stee l canister, with the

power supply converter unit in the front and two serial-aligned cooling fans in
the rear section. When the PSU is removed from the chassis, the cooling module
is also removed.

 Printed text on PSU handle: Before you insert a new PSU, make sure that the

printed text on the PSU handle matches the printed text on a partner PSU.
Double-check to avoid using a PSU of a differe nt EMD series.

Figure 5-8: Printed Text on PSU Handle

 Immediate replacement: When a PSU fails, it should ideally be replaced

immediately. Do not remove the PSU module unless a replacement is readily
available. Removing a PSU without a replacement will cause severe disruptions
to the internal airflow and the subsystem will overheat, possibly causing
irreparable damage to some of the subsystem components.

WARNING!

Although the subsystem can operate using a single PSU module, it is not advisable
to run the EMD subsystem with a single PSU module for an extended period of
time.

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Chapter 5: Subsystem Maintenance and Upgrading

5.5.2 Replacing the PSU Module

WARNING!

Before you insert a new PSU, be sure that it has the same wa rning label on its
extraction handle as that shown on the lever of a remaining PSU. Double-check to
avoid mixing a similar yet different PSU of another EMD series.

To replace a PSU, please follow these steps:

Step 1. Power off the PSU. The power switch is located on each PSU’s rear-

facing panel. (See

Step 2. Disconnect the power cord that connects the PSU to the main power

source.

Step 3. Remove the retention screw that secures the rejection handl e to the

chassis. (See

Figure 5-10: Removing the PSU Retention Screw.)

Figure 5-9)

Figure 5-9: PSU Parts Identification

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SecurStor 16i Installation and Hardware Reference Manual

Figure 5-10: Removing the PSU Retention Screw

Step 4. Remove the PSU module by grabbing the rejection handle and pulling

the handle upwards. The rejection handle should gracefully disconnect
the PSU from the backplane connectors. Once dislodged, gently pull
the PSU module out of the subsystem. If the subsystem is mounted in
a rackmount rack, use another hand to support its weight while
removing the module. (See

Figure 5-11)

Figure 5-11: Removing the PSU Module

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Chapter 5: Subsystem Maintenance and Upgrading

WARNING!

1. When a PSU is removed form the chassis, the cooling module is also removed

from the chassis.

2. It is recommended that the replacement procedure is completed in less than

five (5) minutes to prevent the subsystem from overheating.

Step 5. Install the replacement module. Make sure the ejection handle is at

its up-most position so that the saddle notches on the sides of the
handle can snap onto the metal protrusions along the interior walls of
the PSU slot. Push the PSU into chassis, and when you feel the
contact resistance, push the handle downward to secure the module.

Step 6. Secure the PSU to the subsystem by fastening the retention screw

through the PSU ejection handle.

Step 7. Replace and Connect the power cord that connects the PSU module

to the mains.

Step 8. Power on the PSU module.

5.6 Cooling Module Maintenance

5.6.1 Notes on Cooling Module Maintenance

 Redundant cooling modules: T he subsystem is equipped with four (4) cooling

fans, two (2) within each PSU module. These cooling modules control the
internal operating temperature of the subsystem and therefore their working
integrity should b e maintained at all times.

Although the cooling modules ar e fully redundant, it is not advisable to run the
EMD subsystem with fans in a single PSU module for an extended period of
time. If the cooling fans in the only remaining PSU module fail, the subsystem
will quickly overheat.

 Detecting a failed cooling module: If a cooling module fails, the LEDs located

at the back of the PSU module, an audible alarm, the firmware, the RAIDWatch
manager software, or the Configuration Client can notify you.

 Replacing a cooling module: Once you are notified that a cooling module has

failed, it should be replaced as soon as possible. A failed cooling module should
only be removed from the subsystem when you have a replacement module
immediately available.

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SecurStor 16i Installation and Hardware Reference Manual

5.6.2 Replacing a Cooling Module

If one of the cooling modules fails, it must be replaced as soon as possible. The cooling module is
secured to the PSU module with the six (6) screws from the top. To replace the cooling module,
follow the steps below:

WARNING!

The fan replacement process should be completed within five (5) minutes. If the
process takes too long, the accumulated heat can damage the subsystem.

Step 1. To remove the cooling module, remove the PSU module first.

Please follow the PSU removal process listed in the previous
discussion.

Step 2. Use a medium-size Phillips screwdriver to remove the six screws

from the top of the PSU module. (See
Cooling Module)

Figure 5-12: Removing a

Figure 5-12: Removing a Cooling Module

Step 3. Remove the cooling fan assembly by the following steps:

Step 3-1. Make sure the PSU handle is in the down position so

that you can grab the edge of the cooling fan assembly.

Step 3-2. Use your thumb and middle fingers to seize the

cooling assembly, your thumb by the upper edge of the fan guard
and your middle finger at the hemispheric indent.

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Chapter 5: Subsystem Maintenance and Upgrading

Step 3-3 Tilt the fan a little bit and remove the fan assembly

with a precisely vertical motion.

Figure 5-13: Removing a Cooling Module

Step 4. Install the replacement module by aligning it with the module bay

on the PSU module and gently lowering it into. The fan outlet
should be aligned with the PSU faceplate and that the side with
screw holes should be facing up. Do this with a precisely vertical
motion so that the cooling module’s connector can correctly mate
with the connector in the module bay.

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SecurStor 16i Installation and Hardware Reference Manual

Step 5. Secure the module by fastening the screws you previously

removed.

Step 6. Reinstall the PSU module into chassis. When powered on, check

if the cooling fan LEDs are lit. If not, that means your cooling fans
are operating properly.

5.7 Replacing a Failed Hard Drive

5.7.1 Hard Drive Maintenance Overview

• Hot-swappable drive trays: The drive trays are all hot-swappable. A disk drive

failure can be corrected online.

• Handles: If the failed hard drive is behind ei ther the left or ri ght front handle,

unfold the handles to open the front access to the drive trays.

Figure 5-14: Open the Front Handles

Step 1. Open flap: Once the front flap on the drive tray has been opened, the

drive tray must be removed from the subsystem. Failure to remove
the drive tray from the subsystem after the front flap has been
opened may cause data errors.

Step 2. Slowly remove a faulty drive: When removing a drive tray from the

subsystem,

pull the drive tray out only about one inch and
then wait for at least 30 secon ds for the hard drive motor
to spin down before taking it out completely

the hard drive while the drive motor is spinning can damage the hard
drive.

There are situations that healthy drives can be removed. In

operations such as Copying & Replacing member drives with drives
of larger capacity, you may need the replaced disk drives i n other
installations.

. Any impact to

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Chapter 5: Subsystem Maintenance and Upgrading

Step 3. Keep a replacement on hand: If a hard drive has failed, make sure

you have a replacement drive readily available before removing the
failed drive from the subsystem. Do not leave the drive tray slot
open for an extended period of time or the normalized airflow will
be disrupted and subsystem components will overheat and may
become permanently damaged.

5.7.2 Replacing a Hard Drive

To replace a hard drive, please follow these steps:

WARNING!

Hard drives are fragile; therefore, always handle them with extreme care.

 Do not drop the hard drive.
 Always be slow, gentle, and careful when handling a hard drive.
 Handle a hard drive only by the edges of its metal cover, and avoid touching

its circuits part and interface connectors.

Step 1. Identify the location of the drive tray that contains a hard drive

indicated as faulty. You may use firmware utility or RAIDWatch
software to locate a faulty drive. The drive tray LED should also
light red.

Step 2. Make sure the rotary bezel lock is in the unlocked position, i.e.,

the groove on its face is in a horizontal orientation. If the groove is
in a vertical position, as shown below, then the bezel lock is
locked and the front flap on the drive tray cannot be opened.

Figure 5-15: Front View of an Individual Drive Tray

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SecurStor 16i Installation and Hardware Reference Manual

Step 3. Open the front flap on the drive tray. Push the release button on the

front of the drive tray. The front flap will automatically swing up into
position.

Figure 5-16: Opening the Drive Tray Front Flap

Step 4. Remove the drive tray by pulling it one inch away from the drive

bay. Wait for at least 30 seconds for the disk drive to spin down (if

the disk drive is removed for a different purpose, e.g., cloning the
members of a logical drive or Copy & Replace), and t hen gently and

carefully withdraw the drive tray from the ch assis.

Figure 5-17: Removing a Drive Tray

Step 5. Remove the four (4) retention screws that secure the hard drive

from the sides of the drive tray (two on each side.)

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Chapter 5: Subsystem Maintenance and Upgrading

Figure 5-18: Loosening the Hard Drive Screws

Step 6. Install the replacement hard drive. Please refer to the complete hard

drive installation procedures in Section 2.6.

5-21

A.1 Technical Specifications

Environmental Specifications

Appendix A

Specifications

Humidity

Temperature

Altitude

Power Requirements

Input Voltage

Frequency

Power Consumption

Dimensions

With Forearm Handles

Height

Width

5 to 95% (non condensing – operating and non-operating)

Operating: 0º to 40ºC (35ºC if BBU is applied)
Non-operating: -40º to 60ºC

Operating: Sea l evel to 12,000ft
Packaged: Se a level to 40,000ft

100VAC @ 9A
240VAC @ 4.5A with PFC (auto-switching)

47 to 63Hz

530W

Without Forearm Handles

(Not including rear-end
protrusions)

131mm (5.2 inches) 130mm (5.1 inches)

482.6mm (19 inches) 445mm (17.5 inches)

Length

System Weight

Net Weight

Gross Weight

A-1

504.3mm (19.8 inches) 488.2mm (19.2 inches)

28kg (61.7 pounds)

31kg (68.3 pounds)

SecurStor 16i Installation and Hardware Reference Manual

Certifications

• FCC Class-B

• CE

• CB

• UL60959 / IEC 60950

• BSMI

Shock

Half-sine

Operating: 5G peak, 11ms duration

Non-operating: 15G, 11ms duration

Vibration

Operating

Non-operating

5 to 500Hz, 0.2G, X/Y/Z

5 to 500Hz, 1.0G, X/Y/Z

Warning Alarms

• Audible alarms

• System LEDs

• Event notification via the RAIDWatch Manager (LAN broadcast, email, fax, MSN, SMS,

and SNMP traps) and RS-232C terminal screen

A-2

Appendix A

Specifications

A.2 Controller Specifications

Configuration

Specification

RAID Levels

Host O/S Compatibility
Host Interface RJ-45 Gigabit Ethernet

Host Channels 4 pre-configured host channels
Drive Interface
Drive Channels All drive channels are pre-configured and cannot be changed

Cache Mode Write-through, write-back, and adaptive write policy
Cache Memory
Number of LUN’s Up to 32 per host ID

Multiple Target
IDs/Host Channel
Firmware on Flash
Memory

0, 1(0 + 1), 3, 5, 6, 10, 30, 50, 60, JBOD, and non-RAID disk
spanning
Host O/S independent; also dependent on iSCSI offload utilities and
hardware

Supports up to 16 channels of 3Gbp s SATA-II; SATA-I backward
compatible

Pre-installed 512MB (or above) DDR RAM DIMM with/without
ECC, registered; in one DIMM socket

Yes

Yes

Architecture

Specification

CPU 933MHz PowerPC 750GL
Gigabit Ethernet Chip

Controllers
DIMM Slot One 184-pin DDR DIMM module

ASIC Excel-Meridian Data 64-bit chipset (ASIC400)
Flash ROM 64Mbit (8MB)
NVRAM 128Mbit with RTC (with Embedded RAIDWatch utility )
Hardware XOR Yes
Real-time Clock For event messages with time record and task scheduling

Intel 82546 x 2

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SecurStor 16i Installation and Hardware Reference Manual

A.3 Drive Tray Specifications

Specification

Height 28mm
Width 110mm
Depth 218.92mm
Key Lock Yes

A.4 Power Supply Specifications

Specification

Nominal Power 530W with active PFC
DC Output 12.0V: 32A (Max.)

Input Frequency 47 to 63Hz
AC Input 100VAC @ 9A or 240VAC @ 4.5A with PFC

Power Factor
Correction
Hold-up Time

Over-temperature
Protection

Cooling Fans

5.0V: 32A (Max.)

3.3V: 30A (Max.)

Yes

At least 20ms at 115/230VAC full load after a loss of AC input
Auto shutdown when lost cooling or exceeded ambient temperature;

over-voltage protection is also available.
No fans specific for PSU; heated air is drawn by the cooling fan

module fixed in the rear section of PSU.

A.5 Cooling Module Specifications

Specification

Speed
Max. Air Flow (each

module)
Input Power

Input Current
Rated Voltage

Temperature

Acoustic Noise

A-4

High or low rotation speed controlled by firmware proactive mechanisms
High speed: 90 CFM

Low speed: 70.7 CFM

13.2W max.

1.1A max.
DC 12V

Operating: -10 to +70ºC
Storage: -30 to +70ºC
High speed: 51dB Max.
Low speed: 46dB Max.

Appendix A
Specifications

A.6 RAID Management

Specification

Configuration

Performance Monitoring Yes
Remote Control and

Monitoring
Event Broadcast/Alert

Event Notification
Hardware Connection over Ethernet or RS-232C

Configuration on Disk

Failure Indicator

Yes
Yes (via RAIDWatch sub-modules, the Configuration Client utility,

NPC, or Embedded, browser-based RAIDWatch)
Yes (via RAIDWatch sub-modules, Configuration Clie nt, NP C, o r
Embedded, browser-based RAIDWatch)

Configuration data stored on disks for logical drive assemblies to
exist after controller replacement; basic settings, e.g., channel mo de
settings, are stored on NVRAM
Via audible alarm, LCD panel, RAIDWatch Manager session, or
terminal emulation

• Text-based firmware-embedded utility over RS-232C

through the included audio jack-to-DB-9 serial cable

• LCD keypad panel

• The RAIDWatch Manager program using the management

port (10/100BaseT)

A.7 Fault Tolerance Management

Specification

Drive S.M.A.R.T. support
Battery Back-up Option Yes

Sensors and Module Presence
detection through an I
bus.
Automatic Drive Failure
Detection
Automatic Rebuild on Spare
Drives

Regenerate Logical Drive Parity Yes
Bad Block Reassignment Yes

Automatic Rebuild upon Failed
Drive Replacement
Manual Clo ne of Suspected
Failed Drive
Concurrent Rebuild on Multiple
Drives in a RAID (0 + 1) or
RAID6 Logical Drive
Salvage the 2nd Temporarily
Failed Drive in a RAID 1, 3 5, or

2

C serial

Yes, with user-configurable detect-only, clone-and-replace,
and perpetual-clone options.

Yes

Yes

Yes

Yes

Yes

Yes

Yes

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SecurStor 16i Installation and Hardware Reference Manual

6 Logical Drive
Salvage the 1st Temporarily

Failed Drive in a RAID 0 Logical
Drive

Yes

A-6

B.1. D-SUB 9 and Audio Jack Pinouts

B.1.1. COM1 Serial Port Cable

COM1 Cable: This cable connects the COM1 serial port on the controller module to the serial
port of a management computer. The serial port’s defaults and requirements are:

1. Set at 38400 baud, 8 bit, 1 sto p bit, and no parity.

2. In most cases, connecting RD, TD, and SG is enough to establish communications with a

terminal.

Appendix B

Pinouts

Figure C-19: Adapter Cable for COM1 - Connector Pinouts

CN1 Pin Number Pin Name

1 Ground
2 TXD
3 RXD

CN2 Pin Number Pin Name

1 NC
2 RXD
3 TXD
4 DTR (Shorted)
5 GND
6 DSR (Shorted)
7 RTS (Shorted)
8 CTS (Shorted)
9 NC

Table B-1: COM1 Adapter Cable CN1 and CN2

B-1

Pin Out Definitions

SecurStor 16i Installation and Hardware Reference Manual

B.1.2. COM2 Serial Port Cable to UPS

COM2 Cable: Use this cable to connect the CO M 2 por t to a UPS.

Figure C-20: Connector Pinouts - Adapter Cable for COM2

CN1 Pin Number Pin Name

1 Ground
2 TXD
3 RXD

CN2 Pin Number Pin Name

1 TXD
2 RXD
3 NA
4 NA
5 NA
6 NA
7 NA
8 NA
9 Ground

Table B-2: COM2 Adapter Cable CN1 and CN2

Pin Out Definitions

B.2. Null Modem

A null modem has its wires swapped and is necessary for connecting COM1 CN2 to the
serial port of a management computer.

B-2

Appendix B: Pinouts

Figure B-21: Null Modem Pinouts

Swap pin 2 and pin 3
Swap pin 4 and pin 6
Swap pin 7 and pin 8

Table B-3: Null Modem Pinouts

B.3. Ethernet Port Pinouts

Figure B-22: Ethernet Port Pinouts

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SecurStor 16i Installation and Hardware Reference Manual

Pin Pin Name Pin Pin Name
1
2
3
4

LAN_TXP

LAN_TXN

LAN_RXP

N2

5
6
7
8

Table B-4: Ethernet Port Pinouts

N2

LAN_RXN

N1

N1

B.4. STP LAN Cable

This shielded twisted pair cable is an optional accessory item. More details are shown below:

Description: SFTP CAT5E Ethernet cable.
Color: black.
Connector: 8P8C plug (covered by metal shield)
Cable type: round cable, #24AWG*4P braided wire OD: 6.2mm

metal shield – braided wire – metal shield

Figure B-23: STP Ethernet Cable Pinouts

B.5. Main Power

IEC-type receptacle. Unless specified otherwise, cable type will be determined by the shipped-to area.

B-4

Appendix C

Uninterruptible Power Supply

C.1 Uninterruptible Power Supply Overview

An uninterruptible power supply (UPS) is a separately purchased battery backup unit that is
connected to an EMD Storage
whole subsystem to safely finish the on going I/Os in the event of an AC power failure.

C.2 Compatible UPS Supplies

The APC SMART-UPS 700VA is compatible with the SecurStor subsystem.

subsystem. If the UPS is sufficiently large, it should allow the

C.3 Serial Communication Cable

The subsystem i s shipped with a customized audio-jack to DB9 serial communication cable.
The cable is used to connect the controller module on a subsystem to a PC hyperterminal for
subsystem management. If you wish to use a UPS with your subsystem, an additional audio-

jack to DB9 serial communi cation cable (see Figure C-24) must be purchased.

Figure C-24: Audio-

Jack to DB9 Serial Communication Cable

CAUTION!

The pinouts on the COM2 audio-jack to DB9 serial cable used to connect
to the UPS are different from the pinouts on the serial cable that was
shipped with the subsystem. When connecting the UPS device, please

make sure you use the correct cable type. The cable pinouts are listed in

Appendix B.

C.4 Connecting the UPS to the Subsystem

C.4.1 Connect the PSU Module Power Cords

The two (2) power cables shipped with the subsystem must be plugged into the
power cord sockets in the rear of the PSU modules. The plug at the other end of the

C-

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SecurStor 16i Installation and Hardware Reference Manual

power cable must be inserted into a socket on the UPS. (See Figure C-25) Please
refer to the UPS manual to determine the location of these sockets. The UPS must
then be connected to main power.

C.4.2 Set the Baud Rate

The default baud rate for the COM 2 serial port is 38400 and must be changed to

2400. For instructions on changing the baud rate, please refer to the SCSI to SATA

RAID Subsystem’s Operation Manual that came with the subsystem.

C.4.3 Connect COM2

The separately purchased audio-jack to DB9 serial cable connects the COM2 port on
the controller module to the UPS directly. (See Figure C-25) The cable transmits
UPS status updates to the controller module and will in turn determine the write
policy of the controller module. To connect the serial communication cable to the
subsystem controller, insert the audio jack connector on one end of the cable into the
COM2 port on the controller module. To see how to connect the DB9 connector to
the UPS, please refer to the documentation that came with your UPS.

Figure C-25: Connecting the UPS to the Subsystem

C.5 Power On

When powering on the subsystem, the UPS must be powered on before the subsystem. For

instruction on how to power on the UPS, please refer to the documentation that came with

your UPS. Note that the power on sequence described in Chapter 4 will be altered. The power
on sequence when a UPS is connected is shown below:

Step 1. Power on SCSI c

switches).

Step 2. Power o n t he UPS.
Step 3. Power on the subsystem.
Step 4. Power on the host computers.

hannel connection devices (including hubs and

C-2

Appendix C: Uninterruptible Power Supply

Step 5. Trigger the firmware to allow the subsystem to detect the UPS.

To see how to do this please, refer to the Generic Operation
Manual that came with the subsystem.

NOTE:

• A UPS can be connected to the subsystem after the subsystem has

been powered on, but you will have to trigger the firmware to allow
the subsystem to detect the UPS.

• If you are da isy chaining systems together, be sure to make all the

cable connections and then power on the SecurStor 16i subsystem
that is not directly connecte d to ho s t c omputer before powering on the
first subsystem.

C.6 UPS Status Monitoring

If a UPS has been correctly connected to the subsystem, the status of the UPS will be
constantly monitored by the controller through the COM2 (audio jack) serial port. The status
of the UPS will determine the controller’s write policy,
panel and other monitoring d e vices will keep you informed of the UPS status.

and messages that appear on the LCD

C.6.1 Normal Operational Status

If the UPS has been connected to main power and the UPS battery power level is
above 50%, then no status messages will appear and the default “Write Back” write
policy will be implemented by the controller.

C.6.2 UPS Messages

The following messages may appear on the LCD screen:
Message 1: “UPS co nne ction is absent”
This message appears whe n COM 2 ha s not been connected to the UPS.
Message 2: “UPS connection detected”
This message appears when the COM2 ports on the subsystem have been connected

to the UPS.
Message 3: “Warning: UPS AC Power-Loss detected”
This message appears when the UPS battery power level remains above 50% but its

connection to the AC power supply has been disrupted in some way. The write policy
changes from write back to write through.

Message 4: “Warning: UPS Battery Low 50%. Please shut down to protect data
loss”

This message appears when the UPS battery power level has dipped below 50% of its
capacity and the UPS has either been disconnected from the AC power supply or the
AC power supply has been disrupted. The write policy will be changed from the

C-3

SecurStor 16i Installation and Hardware Reference Manual

default write back to write through. If this message appears, the subsystem should be
properly shut down to avoid data loss.

Message 5: “Warning: UPS Battery Low 50%”
This message appears when the UPS battery power level has dipped below 50% of its

capacity. The default write policy will be changed from the default write back to
write through.

Message 6: “UPS Battery restore d to safe level”
This message appears when the UPS battery power level has been restored to above

50% of its capacity. The write policy will be changed from write through to write
back.

Message 7: “UPS AC Power Restored”
This message appears when the AC power supply to the UPS has been reconnected.

If the UPS battery power level is below 50%, the write policy will remain as write
through. If the battery power level is above 50%, the write policy will change from
write through to write back.

C.6.3 UPS Message Summary

Table C-1 below summarizes the UPS messages described above. It is

important that you become familiar with these messages and their meanings
to help maintain the integrity of the data running through your subsystem.

Message AC Power Battery

Power
Level (BPL)

UPS connection is absent

UPS connection detected

Warning: UPS AC Power­Loss detected

Warning: UPS Battery
Low 50%. Please shut
down to protect data loss

Warning: UPS Battery
Low 50%.

UPS AC Power Restored

UPS AC Power Restored

UPS Battery restored to
safe level

N/A N/A Write back

N/A N/A Write back

Disconnected BPL > 50% Write through

Disconnected BPL < 50% Write through

Connected BPL < 50% Write through

Reconnected BPL > 50% Write back

Reconnected BPL < 50% Write through

Reconnected BPL > 50% Write back

Write
Policy
Status

Table C-1: UPS Status Messages

C-4

Appendix C: Uninterruptible Power Supply

This page is intentionally left blank.

C-5