NEC N8103-102 User manual

()
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
■■■■■■■
User Guide
Battery Backup Unit

2
PROPRIETARY NOTICE AND LIABILITY DISCLAIMER
The information disclosed in this document, including all designs and related materials, is the valuable
property of NEC Computers and/or its licensors. NEC Computers and/ or its licensors, as appropriate,
reserve all patent, copyright and other proprietary rights to this document, including all design,
manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly
granted to others.
To allow for design and specification improvements, the information in this document is subject to change at
any time, without notice. Reproduction of this document or portions thereof without prior written approval of
NEC Computers is prohibited.
The NEC Computers product(s) discussed in this document are warranted in accordance with the terms of
the Warranty Statement accompanying each product. However, actual performance of each product is
dependent upon factors such as system configuration, customer data, and operator control. Since
implementation by customers of each product may vary, the suitability of specific product configurations and
applications must be determined by the customer and is not warranted by NEC Computers.
rev 1.0 January 2008
Copyright 2008
All Rights Reserved
NEC Computers S.A.S.
10 rue Godefroy
Immeuble OPTIMA
92821 PUTEAUX

3
Preface
Congratulations for your purchase of the RAID Battery Backup Unit (called BBU hereafter).
This guide describes how to install and use the BBU correctly and safely. Read the guide thoroughly before
handling it, and refer to this manual when you want to know how to use it or should some malfunction occur.
For more information on the RAID controller to which the BBU is connected, refer to the User’s Guide
coming with the RAID controller. For the Internal RAID Controller to which the BBU is connected, refer to the
User’s Guide coming with the server.
Read the "Notes on Use" carefully before handling the BBU.

4
Table of Contents
Preface.............................................................................................................................................3
Table of Contents.............................................................................................................................4
NOTES ON USE - Always read the Notes -...........................................................5
Symbols Used in This Manual and Warning Labels .........................................................................6
Safety Notes.....................................................................................................................................7
Warning Labels .............................................................................................................................. 11
This Manual....................................................................................................................................12
In the Package...............................................................................................................................13
Transportation................................................................................................................................13
Third Party Transfer .......................................................................................................................13
Life of BBU.....................................................................................................................................14
Recycling and Disposal..................................................................................................................14
Chapter 1 Overview..............................................................................................................15
1. Characteristics of the BBU ...............................................................................................15
2. Specification .....................................................................................................................15
3. Installation Flow................................................................................................................16
4. Checking the Package Contents......................................................................................17
5. Names and Functions of Sections....................................................................................18
6. Notes ................................................................................................................................20
6-1. Notes on Installation................................................................................................................20
6-2. Notes on Operation.................................................................................................................20
Chapter 2 Installing the BBU................................................................................................21
1. Installation Procedure.......................................................................................................21
1-1. Putting the Setup Date Label..................................................................................................21
1-2. Connecting the battery cable ..................................................................................................22
1-3. Installing the BBU in the RAID controller.................................................................................22
2. Checking via the Utility.....................................................................................................23
Chapter 3 Operation and Maintenance................................................................................24
1. Maintenance Service........................................................................................................24
2. Preventive Maintenance...................................................................................................24
2-1. Preventive Maintenance of the BBU .......................................................................................24
2-2. Life of Battery Pack.................................................................................................................24
3. Battery Pack Replacement Procedure.............................................................................25

5
Keep this User Guide handy for quick reference.
Be sure to read this section carefully.
NOTES ON USE - Always read the Notes -
The following includes information necessary for proper and safe operation of the product.
SAFETY INDICATIONS
In the User Guide, "WARNING" or "CAUTION" is used to indicate a degree of danger. These terms are
defined as follows:
WARNING Indicates a hazard that may result in death or serious personal injury.
CAUTION Indicates a hazard that may cause minor personal injury, including burns, or
property damage.
Precautions against hazards are presented with the following symbols. The individual symbols are defined as
follows:
Attention This symbol indicates a hazard.
An image in the symbol illustrates the hazard type.
(Example)
Precaution against
electric shock
Prohibited
Action This symbol indicates prohibited actions. An image in the symbol illustrates a particular prohibited action.
(Example)
Prohibition of
disassembly
Mandatory
Action
This symbol indicates mandatory actions. An image
in the symbol illustrates a mandatory action to avoid
a particular hazard.
(Example)
Unplug the power cord!

6
Symbols Used in This Manual and Warning Labels
Cautions
Indicates a general notice or warning that cannot be specifically identified.
Indicates that improper use may cause an electric shock.
Indicates that improper use may cause a personal injury.
Indicates that improper use may cause fumes or fire.
Prohibited Actions
Indicates a general prohibited action that cannot be specifically identified.
Do not disassemble, repair, or modify the server. Doing so may cause an electric
shock or fire.
Mandatory Action
Unplug the power cord of the server. Not doing so may cause an electric shock or fire.
Indicates a mandatory action that cannot be specifically identified. Make sure to
follow the instruction.

7
Safety Notes
Read the notes described below carefully to understand them, these will enable you to safely use your
product. See "Safety Indications" described earlier for the descriptions of symbols.
General
WARNING
Do not use the product for services involving human lives or requiring high
reliability.
The product is not intended to be used with or control facilities or devices
concerning human lives, including medical devices, nuclear facilities and devices,
aeronautics and space devices, transportation facilities and devices; and facilities
and devices requiring high reliability. The manufacturer assumes no liability for any
accident resulting in personal injury, death, or property damage if the Disk
Expansion Unit has been used in the above conditions.
Do not use the product if you are aware of any suspect smoke, odour, or
noise.
If smoke, odour, or noise is present, immediately switch off the unit and disconnect
the power plug from the outlet. Contact your sales agent. Using the product in
such conditions may cause a fire.
Keep needles or metal objects away from the server.
Do not insert needles or metal objects into the ventilation holes or cartridge slot of
the server. Doing so may cause an electric shock.
CAUTION
Keep water or foreign matter away from the server.
Do not let any form of liquid (water etc.) or foreign matter (e.g., pins or paper clips)
enter the server. Failure to follow this warning may cause an electric shock, a fire, or
a failure of the server. When such things accidentally enter the server, immediately
turn off the power and disconnect the power plug from the AC outlet. Do not
disassemble the server. Contact your service representative.

8
Power Supply and Power Cord Use
CAUTION
Disconnect the power cord(s) before installing or removing the product
in/from the server.
Make sure to power off the server and disconnect the power cord(s) from the power
outlet before installing/removing the product in/from the server, or connecting with
the peripheral devices. All voltage is removed only when the power cords are
unplugged.
Always observe the following to prevent an electric shock or fire that could be
caused by a damaged cord.
Do not stretch the cord harness.
Do not pinch the power cord.
Do not bend the power cord.
Keep chemicals away from the power cord.
Do not twist the power cord.
Do not place any object on the power cord.
Do not bundle power cords.
Do not alter, modify, or repair the power cord.
Do not secure the power cord with staples or equivalents.
Do not use a damaged power cord. (Replace a damaged power cord with a
new one of the same specifications. Ask your sales agent for replacement.)
Do not hold the power plug if your hands are wet.
Do not disconnect/connect the plug while your hands are wet. Failure to follow this
warning may cause an electric shock.
Do not pull the cable when disconnecting the power cord.
When disconnecting the power cord from the server, hold the plug and pull it straight
out. Pulling the cord out by the cable portion could damage the cable to result in an
electrical shock hazard or a fire.

9
Installation, Relocation, Storage, and Connection
CAUTION
Do not connect any interface cable when the power cord of the Disk
Expansion Unit is plugged to a power source.
Make sure to power off the server and unplug the power cord from a power outlet
before connecting/disconnecting the interface cable. If the server is off-powered but
its power cord is plugged to a power source, touching the cable may cause an
electric shock or a fire may result from a short circuit. Also, connect/disconnect the
interface cable after turning off the power of the destination.
Do not use any unauthorized interface cable.
Use only interface cables authorized by the manufacturer and locate a proper
device and connector before connecting a cable. Using an unauthorized cable or
connecting a cable to an improper destination may cause a short circuit, resulting in
a fire.
Also, observe the following notes on using and connecting an interface cable.
Do not step on the cable.
Do not place any object on the cable.
Do not use the server with loose cable connections.
Do not use any damaged cable connector.
Make sure the cable is securely locked with the relevant screws.
Do not use or store the product in the place where corrosive gases exist.
Make sure not to locate or use the server in the place where corrosive gases
(sulphur dioxide, hydrogen sulphide, nitrogen dioxide, chlorine, ammonia, ozone,
etc) exist.
Also, do not set it in the environment where the air (or dust) includes components
accelerating corrosion (ex. sulphur, sodium chloride) or conductive metals. There is
a risk of a fire due to corrosion and/or short-circuits of an internal printed board.
Avoid installation in extreme temperature conditions.
Immediately after the server is powered off, its internal components, such as hard
disk drives are very hot. Let the installed components fully cool down before
installing/removing anything.

10
Cleaning and Working with the Product
WARNING
Do not disassemble, repair, or alter the server.
Do not attempt to disassemble, repair, or alter the product in any occasion other
than those described in this User Guide. Failure to follow this instruction may cause
an electric shock or fire as well as malfunctions of the product.
Disconnect the power plug before accessing inside the server.
Make sure to power off the server and disconnect the power plug from the AC outlet
before accessing inside the server. Touching any internal device of the server when
its power cord connected to a power source may cause an electric shock even if the
server is off-powered.
CAUTION
Make sure to complete installation.
Always connect the DC cable and/or interface cable firmly. An incompletely
connected cable may cause a contact failure, resulting in smoke or fire.

11
During Operation
CAUTION
Avoid contact with the server during thunderstorms.
Disconnect the power plug from the outlet when a thunderstorm is approaching.
If the thunderstorm begins before you can disconnect the power plug, do not touch
any part of the server containing the product. Failure to follow this warning may
cause an electric shock.
Keep animals away from the server.
Do not use a cellular phone or a pager around the server.
Turn off cellular phones or pagers near the server containing the product. Radio
interference may cause malfunctions of the server.
Warning Labels
A warning label is attached to the products potentially dangerous or in their vicinity to inform the user that a
hazardous situation may arise when operating the product. (Do not intentionally remove or damage any of
the labels.)
If you find any labels to be totally/partially removed or illegible due to damage, contact your sales
representative.

12
Notes on Use - for correct operation of BBU
Note the following when using the BBU. If you ignore these notes, your assets (including important data
and/or other devices) may be damaged.
The BBU cannot be connected to any RAID controller, but only to the ones for which it was purchased.
The BBU is an extremely sensitive electronic device. Touch the metallic frame of the server to
discharge static electricity from your body before handling the BBU.
Do not drop the BBU.
Do not hit the BBU against other objects.
To recycle or dispose of the BBU, see "Recycle and Disposal" in this chapter.
Turn off your cellular phone or pager near the server containing the product. Radio interferences may
cause malfunctions of the server.
This Manual
The guide is intended for persons who are familiar with operating systems, including Windows, and
fundamental operations of general-purpose I/O devices, including the keyboard and mouse.
Text Conventions
The following conventions are used throughout this User Guide. For safety symbols, see "SAFETY
INDICATIONS" provided earlier.
Notice
Items to be observed or points to be noted when operating the
product.
Check
Items to be checked when operating the product.
Tips
Information useful or convenient for you.

13
In the Package
Check the package contents.
The package contains various accessories, as well as the product itself. Check with the packing list and
make sure you have everything and that individual components are not damaged. If you find any missing or
damaged components, contact your sales agent.
Transportation
To transport the BBU, remove it from the server following "Chapter 1 Overview" and put the BBU and all the
accessories in the package used for the delivery.
Third Party Transfer
Make sure to provide this manual along with the product to a third party.
Notice
About data on the hard disk
Be sure to take appropriate measures not to leak important data (e.g., customers'
information or companies' management information) on the removed hard disk to
any third parties.
Data seems to be erased when you empty "Recycle Bin" of Windows or execute
the "format" command of the operating system. However, the actual data remains
written on the hard disk. Data not erased completely may be restored by special
software and used for unexpected purposes.
It is strongly recommended that the software or service (both available at stores)
for data erasure should be used in order to avoid the trouble explained above. For
details on data erasure, ask your sales representative.
The manufacturer assumes no liability for data leakage if the product is transferred
to third party without erasing the data.

14
Life of BBU
The BBU is equipped with a backup battery. The life of the battery is about 2 years, but can vary depending
on the environmental and operating conditions.
Replace the battery with a new one after about two years starting from the installation of the BBU (check the
battery label put on the server and the BBU). Contact your service representative for the replacement.
Recycling and Disposal
The battery pack of the BBU is equipped with a lithium ion battery which is recyclable. To enable such
valuable resources to be reused, contact your service representative or bring it to the nearest recycle agent.
For the removal of the BBU, see "4. Battery Pack Replacement Procedure" in "Chapter 3 Operation and
Maintenance".
Dispose of other devices following the regulation of the local government. Formore information, contact the
local government or your service representative.
Handle the battery pack according to the precautions listed in "Chapter 3 Operation and Maintenance".
Notice
It is the user's responsibility to completely erase or modify all the data
stored in storage device such as hard disk, backup data cartridge, floppy
disk, or any other media (CD-R/CD-RW) so that the data cannot be
restored.

15
Chapter 1 Overview
Read this chapter if you are using the RAID Battery Backup Unit (called Battery Backup Unit=BBU) for the
first time.
This chapter describes the characteristics and configuration of the BBU and outlines the additional battery
installation procedure.
1. Characteristics of the BBU
Connecting the BBU to the RAID controller can prevent data from being lost in incidents such as
instantaneous power interruptions (in the WriteBack mode).
Backup of data in SDRAMs on the RAID controller for up to 72 hours.
Reliability improvement in WriteBack mode.
Rechargeable lithium ion battery use.
2. Specification
Item Specification Remarks
Maximum data backup time 72 hours Full charging
Outer dimension 67 (width) × 54 (depth) x 13
(height) mm Excluding battery cable
Weight Approx. 0.10 kg
Operating voltage 3.7 V or higher In normal operation
Power consumption 1.85 W
Temperature 10°C to 35°C
Operating
environment Humidity 20% to 80% Without condensation
Temperature 0°C to 35°C
Storage
environment Humidity 20% to 80% Without condensation
Life (battery back) About 2 years Varies depending on the
operating environment and
boundary conditions

16
3. Installation Flow
For more information, refer to the respective chapters.
Start
Check BBU and accessories.
Check notes on installation.
Install BBU.
Check connections and
set write cache mode.
End
Chapter 1
Describes how to check the BBU and
accessories in the package and the
notes on installation.
Chapter 2
2. Check from Utility
Describes the connection checking
procedure after battery installation and
the setting of the write cache mode.
Chapter 2
1. Installation Procedure
Describes how to install the BBU.

17
4. Checking the Package Contents
The package contains the following items. Check the contents to confirm that all the items are provided
before starting the installation job.
Item Qty Remarks
RAID Battery Backup Unit 1 This unit
Setup Date Label 1
Screw 3
The package contains the following items.
Battery Backup Unit
Setup Date Label
Y
.M
Set up Date
Screw

18
5. Names and Functions of Sections
This section describes the sections of the BBU.
Front view
2
1
3
4
1 Battery case
Contains the Lithium battery cell
2 Recycle & Caution Label
This label is put on the battery case.
It indicates the recycle symbol, the battery type, a
warning message, and is filled with the
management revision of the battery.
3 Serial Number Label
Indicates the Rev Number, Product Name, Serial
Number.
4 Screw (3 pcs)
Secures this battery case to the RAID controller
XXXXXXX
RAID Batter
y
Backu
p
Unit

19
Rear view Accessories
Y
.M
Set up Date
7
5
6
5 Battery Board
Relays the electric power from the battery pack to the RAID Controller
6 Battery Connector
Connects to the RAID controller.
7 Setup Date label (accessory)
The label is included with the BBU. Fill the year and month corresponding to the installation
time on the RAID controller, and stick the label on the battery case.