NEC Storage ST1220 User manual

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User Guide
SA2500/WA2500
NEC Storage ST1220

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User Guide
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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.
Trademarks
NEC ESMPRO, NEC DianaScope, NEC MWA, and ExpressBuilder are trademarks or
registered trademarks of NEC Corporation.
Adobe, and Adobe Acrobat are registered trademarks of Adobe Systems, Incorporated.
Microsoft, Microsoft Windows, Windows NT, Windows 95, Windows 98, Windows
2000 and Windows Server 2003 are all registered trademarks of Microsoft Corporation.
MS-DOS is a registered trademark of Microsoft Corporation.
Intel and Xeon are registered trademarks of Intel Corporation.
All other product, brand, or trade names used in this publication are the trademarks or
registered trademarks of their respective trademark owners.
rev 1.1December 2006
Copyright 2006
All Rights Reserved
NEC Computers S.A.S.
10 rue Godefroy
Immeuble OPTIMA
92821 PUTEAUX

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TABLE OF CONTENTS
Table of Contents.............................................................................................................4
Regulatories..................................................................................................................6
Momentary Voltage Drop Prevention ................................................................................... 6
CE Statement ........................................................................................................................ 6
FCC Statement...................................................................................................................... 6
BSMI Statement.................................................................................................................... 6
Packing list ...................................................................................................................7
Notes on Use - Always read the notes.-..........................................................................8
Safety Indications ........................................................................................................8
Symbols Used in This User's Guide and Warning Labels...........................................9
Cautions........................................................................................................................9
Prohibited Actions .......................................................................................................9
Mandatory Actions ......................................................................................................9
SAFETY Notes...............................................................................................................10
General .......................................................................................................................10
Power Supply and Power Cord Use.........................................................................11
Rack ............................................................................................................................13
Installation, Relocation, Storage, and Connection..................................................14
Cleaning, and Working with, Internal Devices.......................................................15
During Operation ......................................................................................................16
Warning Labels..........................................................................................................17
Notes on Handling ∼For Proper Operation∼..........................................................18
Accessories Check......................................................................................................19
Third Party Transfer.................................................................................................19
Disposing of the Disk Expansion Unit and its Consumables.................................19
1. Overview of the Disk Expansion Unit.................................................................... 20
Disk Expansion Unit Specifications.............................................................................20
Disk Expansion Unit Features......................................................................................20
2. Names and Functions of Components ................................................................. 21
Front View......................................................................................................................21
Rear View.......................................................................................................................23
Front Bezel.....................................................................................................................25
LED Indications.............................................................................................................26
Power LED.................................................................................................................26
Status LED..................................................................................................................26
IO Module LED .........................................................................................................26
Heartbeat LED...........................................................................................................26
Power Unit LED.........................................................................................................27
Fan Unit LED.............................................................................................................27
Dummy Power Unit LED..........................................................................................27
SAS Connector LED..................................................................................................27
IO Module States LED ..............................................................................................27
Disk Drive LEDs........................................................................................................28

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3. Installing and Connecting the Disk Expansion Unit............................................ 29
Installing.........................................................................................................................29
Installing to / Removing from Rack.........................................................................31
Checking the Installation Components............................................................................... 31
Required Tools.................................................................................................................... 32
Installing the Disk Expansion Unit in an NEC or Third Vendor Rack................................ 32
Removing the Disk Expansion Unit from the Rack............................................................ 38
Connecting .....................................................................................................................39
SAS Interface Cable............................................................................................................ 40
Installation .......................................................................................................................... 40
Cable Connections (Example) ..................................................................................41
Power Cord ......................................................................................................................... 42
4. Basic Operations .................................................................................................... 43
Installing or Removing the Front bezel.......................................................................43
Removing............................................................................................................................ 43
Installing ............................................................................................................................. 45
Powering on/off..............................................................................................................46
5. Installing Built-in Optional Devices....................................................................... 47
Safety Precautions .....................................................................................................47
Anti-static Measures..................................................................................................48
Preparing for Installation and Removal......................................................................49
Installing and Removing Procedures...........................................................................50
Hard Disk ...................................................................................................................50
Installing a Hard Disk......................................................................................................... 51
Removing a Hard Disk........................................................................................................ 54
Rebuilding Disks........................................................................................................56
Power Unit..................................................................................................................57
Installing a Power Unit ....................................................................................................... 57
Replacing a Defective Power Unit...................................................................................... 58
6. Configuration .......................................................................................................... 60
About the disk array controller................................................................................60
7. Management............................................................................................................ 61
Daily Maintenance.........................................................................................................61
LEDs Check................................................................................................................61
Backup........................................................................................................................61
Cleaning the Disk Expansion Unit...........................................................................62
Troubleshooting.............................................................................................................63
LEDs Error Messages................................................................................................63
Troubleshooting .........................................................................................................63
Relocation and Storage of Disk Expansion Unit.........................................................66
User Support..................................................................................................................67

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Regulatories
Momentary Voltage Drop Prevention
This product may be affected by a momentary voltage drop caused by lightning. To prevent a
momentary voltage drop, an AC uninterruptible power supply (UPS) unit should be used.
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
CE Statement
Warning: This is a Class A product. In domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures (EN55022).
FCC Statement
This device complies with Part 15 of the 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.
BSMI Statement

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Packing list
Check the contents in the package.
The package contains various accessories, as well as the Disk Expansion Unit 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.
If the ST1220 Disk Expansion Unit is shipped with some additional options installed, the
accessories for the options are also included.
Main unit
Contents in the accessory package
M5 Screw (Large size)
(12)
Front Bezel (its key is either attached to
the back or inside the accessory box)
Guide Rail assembly
Countersink Screw
(Small size)
(18)
Washers
(12) Captive nuts
(12)

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NOTES ON USE - ALWAYS READ THE NOTES.-
The following includes information necessary for proper and safe operation of the Disk Expansion
Unit.
Safety Indications
Handle the Disk Expansion Unit as instructed in this User's Guide to ensure proper and safe
operation.
The User’s Guide describes potential dangers resulting from the use of the Disk Expansion Unit,
dangers you encounter if you do not observe the instructions, and ways to avoid any dangerous
situation.
Warning labels are attached to the components posing potential threats or in their vicinity in the
Disk Expansion Unit.
In the User’s Guide, "WARNING" or "CAUTION" is used to indicate a degree of danger. The 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 and notices against hazards are presented with one of the following three symbols.
The individual symbols are defined as follows:
This symbol indicates a hazard.
An image in the symbol illustrates the hazard type. (Attention)
This symbol indicates prohibited actions. An image in the symbol illustrates a
particular prohibited action. (Prohibited Action)
This symbol indicates mandatory actions. An image in the symbol illustrates a
mandatory action to avoid a particular hazard. (Mandatory Action)

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SYMBOLS USED IN THIS USER'S GUIDE AND WARNING LABELS
Cautions
Indicates that improper use may cause an electric shock.
Indicates that improper use may cause fumes or fire.
Indicates that improper use may cause fingers to be caught.
Indicates the possibility of loss due to a high temperature.
Indicates a general notice or warning that cannot be specifically identified.
Prohibited Actions
Indicates a general prohibited action that cannot be specifically identified.
Do not disassemble, repair, or modify the Disk Expansion Unit. Doing so may cause
an electric shock or fire.
Mandatory Actions
Unplug the power cord of the Disk Expansion Unit. 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.

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SAFETY NOTES
Read the notes described below carefully to understand them, these will enable you to use the Disk
Expansion Unit safely. See "Safety Indications" described earlier for the descriptions of symbols.
General
WARNING
Do not use the Disk Expansion Unit for services involving human lives or
requiring high reliability.
The Disk Expansion Unit 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. NEC 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 Disk Expansion Unit in any unapproved place.
Install the Disk Expansion Unit on a standard EIA 19-inch rack assembly for
NEC Express server. Do not install the rack containing the Disk Expansion
Unit in a place inappropriate to the rack installation environment.
For more information, refer to the manual attached to the rack or contact your
sales agent.
Always install the Disk Expansion Unit on a rack for NEC Express servers,
conforming to the relevant standard.
Install the Disk Expansion Unit in a rack confirming to the EIA standard for the
server to be used. Do not install the Disk Expansion Unit in any other rack
than a standard EIA 19-inch rack, and do not operate it when it is not installed
in a rack. Failure to follow these instructions may cause the Disk Expansion
Unit to operate incorrectly and/or personal injury or damages of surrounding
devices to occur. Contact your sales agent for more information on the racks
available for the Disk Expansion Unit.
Do not use the Disk Expansion Unit 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 (switching off the power of the NEC
Express server can cut off power to the Disk Expansion Unit). Contact your
sales agent. Using the Disk Expansion Unit in such conditions may cause a
fire.
Keep needles or metal objects away from the Disk Expansion Unit.
Do not insert needles or metal objects into the ventilation holes of the Disk
Expansion Unit or openings of the hard disk drive. Doing so may cause an
electric shock.

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CAUTION
Keep water or foreign matter away from the Disk Expansion Unit.
Do not let any form of liquid (water etc.) or foreign matter (e.g., pins or paper
clips) enter the Disk Expansion Unit. Failure to follow this warning may cause
an electric shock, a fire, or a failure of the chassis. When such things
accidentally enter the Disk Expansion Unit, immediately turn off the power and
disconnect the power plug from the outlet. Do not disassemble the Disk
Expansion Unit. Contact your sales agent.
Protect the equipment from extremely low or high temperature.
Let the system warm (or cool) to room temperature before using it.
The Maximum Recommended Ambient Operating Temperature (TMRA) for the
Disk Expansion Unit is 35.
Power Supply and Power Cord Use
WARNING
Do not hold the power plug if your hands are wet.
Do not disconnect/connect the plug if your hands are wet. Failure to follow this
warning may cause an electric shock.
Do not remove or defeat the ground prong on the power cord.
This equipment has a 3-wire, grounded power cord. To prevent electrical
hazards, do not remove or defeat the ground prong on the power cord.
Do not connect the ground wire to a gas pipe.
Do not connect the ground wire to a gas pipe. Failure to follow this warning may
cause a gas explosion.

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CAUTION
Plug in to a proper power source.
Use a proper wall outlet. Using an improper power source may cause a fire or
a power leak.
Do not install the Disk Expansion Unit in a place where you will require an
extension cord. Using a cord that does not meet the power specifications of
the Disk Expansion Unit may heat up the cord and cause a fire.
Do not connect the power cord to an outlet in which other equipments are
plugged in.
The electric current exceeding the rated flow will overheat the outlet, and may
cause a fire.
Insert the power plug into the outlet as far as it goes.
Heat generation resulting from a power plug that is only half-way inserted
(imperfect contact) may cause a fire. Heat is also be generated when
condensation forms on the dusty blades of a half-way inserted plug, increasing
the possibility of fire.
Use the authorized power cord only.
Use only the power cord that comes with the Disk Expansion Unit. Using a
power cord that is not authorized may cause a fire when the electric current
exceeds the rated flow.
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 use the attached power cord for other equipments or uses.
The attached power cord is specifically designed for the Disk Extension Unit
and ensures it can be safely used. Don't use it for another equipment or uses,
doing so may cause a fire or an electric shock.

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Rack
CAUTION
Never carry or install the rack by yourself.
More than one person is required to carry or install the rack. Failure to
follow this instruction may cause the rack to fall, resulting in personal injuries
and/or the break of surrounding devices.
Do not concentrate the load on a specific point when installing the rack.
Install stabilizers on the rack so that the total load of the rack and devices
mounted on the rack is evenly shard, or join more several racks to make them
more stables. Failure to follow this instruction may cause the rack to fall,
resulting in personal injuries.
Do not install components in the rack by yourself.
More than one person is required to install parts, including the doors and
trays in the rack. Failure to follow this instruction may cause some parts to
fall and break and/or result in personal injuries.
Do not pull out a device from the rack if the rack is unstable.
Only pull out a device from the rack if the rack is perfectly stable (by the
installation of stabilizers or earthquake-resistant construction).
Do not pull out from the rack more than one device at a time.
Pulling out more than one device from the rack may cause the rack to fall.
Do not let the wiring for the rack exceed the rating of the power supply.
To prevent burns, fires, and device damages, the power supplied to the
power supply in the rack shall not exceed the rating load of the power branch
circuit. Contact the local power company for the requirements on the wiring
and installation of electric facilities.
Secure airflow.
For proper cooling and airflow, always leave at least 100 centimetres before
and behind the rack.

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Installation, Relocation, Storage, and Connection
CAUTION
Do not attempt to lift the Disk Expansion Unit only by yourself.
The disk extension Unit weighs max. 27.4 kg (depending on its hardware
configuration). Always require help from two persons to install, disassembly,
or carry the Disk Expansion Unit.
Do not install the Disk Expansion Unit in any place other than specified.
Do not install the Disk Expansion Unit in the following places or any place other
than specified in this User's Guide. Failure to follow this instruction may cause
a fire.
a dusty place
a place exposed to direct sunlight a humid place such as near a
boiler
an unstable place
Do not install the rack leaving its cover removed.
Always replace the cover of the Disk Expansion Unit. Failure to follow this
instruction may reduce the cooling effect in the unit, resulting in malfunctions.
Dust may also enter the unit, resulting in a fire or an electric shock.
Do not pinch your finger.
Be careful not to pinch yourself when installing a built-in option in the Disk
Expansion Unit.
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 Disk Expansion Unit and unplug the power cord
from a power outlet before connecting/disconnecting the interface cable. If the
Disk Expansion Unit 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 provided by NEC and locate a proper device and
connector before connecting a cable. Using an authorized cable or connecting
a cable to an improper destination may cause a short circuit, resulting in a fire.
Observe the following notes when using and connecting an interface cable.
Do not use a damaged cable connector. Before connecting an interface
cable, confirm that the cable connectors are not damaged and that no
connector pins are bent or dirty.
Do not step on the cable.
Do not place any object on the cable.
Do not use the Disk Expansion Unit with loose interface cable connections.
Once the interface cable is connected, lock it securely using a screw driver.
To disconnect the interface cable, unlock it and hold the connector to pull out
it straight.

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CAUTION
Do not use the equipment 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.
Do not lift the unit by its handle or front bezel.
The handle or the front bezel may be disengaged, causing personal injury or
damages to the Disk Expansion Unit and surrounding devices. Carry the unit
with somebody else, holding firmly the bottom of the Disk Expansion Unit.
Cleaning, and Working with, Internal Devices
WARNING
Do not disassemble, repair, or alter the Disk Expansion Unit.
Do not attempt to disassemble, repair, or alter the Disk Expansion Unit on any
occasion other than those described in this User's Guide. Failure to follow this
instruction may cause an electric shock or fire as well as malfunctions of the
chassis.
Disconnect the power plug before cleaning the Disk Expansion Unit.
Make sure to power off the Disk Expansion Unit and disconnect the power plug
from the power outlet before cleaning or installing/removing option boards.
Touching any internal device of the Disk Expansion Unit when its power cord is
connected to a power source may cause an electric shock or a fire due to short
circuits, even if the Disk Expansion Unit is powered off.
Occasionally disconnect the power plug from the outlet and clean the plug with
a dry cloth. Heat may be generated if condensation forms on a dusty plug,
causing a fire.
CAUTION
High temperature
Immediately after the Disk Expansion Unit 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.
Make sure to complete cable and board installations.
Always install the power cable, interface cable, and option boards firmly. An
incomplete installation may cause a contact failure, resulting in smoke or fire.

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CAUTION
The Disk Expansion Unit contains some components that are only good for a
limited period of time and require replacement, such as the internal fan module
and power unit. For stable operation of the Disk Expansion Unit, NEC
recommends you replace these components on a regular basis. Contact your
sales agent for more information.
During Operation
CAUTION
Do not touch the Disk Expansion Unit during a thunderstorm.
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 Disk Expansion Unit, including the cables. Failure to follow
this warning may cause a fire or an electric shock.
Do not place any object on top of the Disk Expansion Unit.
The Disk Expansion Unit may fall and cause damage to the surroundings.
Do not use a cellular phone or pager around the Disk Expansion Unit.
Turn off cellular phones or pagers around the Disk Expansion Unit. Radio
interferences may cause malfunctions of the Disk Expansion Unit.
Keep all animals away from the Disk Expansion Unit.

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Warning Labels
Warning labels are attached to components posing possible danger or in their vicinity in the Disk
Expansion Unit to inform the user that a hazardous situation may arise when operating the chassis
(do not take off any label or soil it). If you find any label unattached, almost peeled off, or soiled,
making the warning illegible, contact your sales agent.
落下注意
これ以上引くと落下します。
Firmly hold the bottom of the system
when removing from the rack cabinet.
注意
CAUTION

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NOTES ON HANDLING ∼FOR PROPER OPERATION∼
Observe the following notes for successful operation of the Disk Expansion Unit. Using the Disk
Expansion Unit while ignoring the notes will cause malfunctions or failures of the chassis.
Make sure to power off the Disk Expansion Unit before connecting or disconnecting cables
between the chassis and the NEC Express server.
Check that the Disk Power LED on the Disk Expansion Unit is off before turning off the chassis.
When you turn off the Disk Expansion Unit, wait at least 30 seconds before turning it back on.
Turn off the power and unplug the power cord from the outlet before relocating the Disk
Expansion Unit.
Clean the Disk Expansion Unit on a regular basis. Regular cleaning prevents various failures
of the chassis.
Lightning may cause a momentary voltage drop. To prevent this problem, we recommended
you use an uninterruptible power supply.
Make sure to use optional devices supported by the Disk Expansion Unit. Some
non-supported devices may be physically installed and connected but cause failures of the
chassis as well as malfunctions of the chassis.
NEC recommends you use NEC genuine products. Some third-party products claim they
support the Disk Expansion Unit. However, repair of the chassis due to a failure or damage
resulted from use of such third-party products will be charged even during the warranty period.

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Accessories Check
The package of the Disk Expansion Unit contains several accessories as well as the chassis. Refer
to the attached packing list to make sure that all items are provided, and then inspect them. If one
or more items are missing or defective, contact your sales agent.
NOTE: The accessories are required for the setup of the
Disk Expansion Unit or the addition of an optional device.
Store them carefully.
Third Party Transfer
To transfer or sell the Disk Expansion Unit or the accessories that come with the Disk Expansion
Unit to a third party, make sure to provide this User’s Guide along with the chassis or the
accessories to a third party.
Disposing of the Disk Expansion Unit and its Consumables
Dispose the Disk Expansion Unit, hard disk drives, and option boards according to the
laws and regulations of the local government.
The Disk Expansion Unit contains some components that are only good for a limited
period of time and require replacement, such as fans.
For stable operation of the Disk Expansion Unit, NEC recommends you replace these
components on a regular basis. Contact your sales agent for more information.

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1. Overview of the Disk Expansion Unit
This section describes the overview of the Disk Expansion Unit.
DISK EXPANSION UNIT SPECIFICATIONS
Item Specifications Remarks
External Interface Serial Attached SCSI ANSI T10 SAS 1.0/1.1
Compliant.
HDD Capacity 12 (max)
Physical dimensions 444mm(w)×561mm(d)×88mm(h) 2U of standard
19-inches rack
Weight 27.4kg (with 12 HDD)
21.4kg (without HDD)
Power Voltage 100-240V AC (50-60Hz)
Power Current (Maximum) 4A@100V AC, 1.6A@240V AC
Power Consumption 400W Under load
Operating Temperature 10 - 35 degrees C
Humidity 20 - 80 %
Environmental
condition Non-operating Temperature -20- 60 degrees C
Humidity 20 - 80 %
No condensation
DISK EXPANSION UNIT FEATURES
Support for up to 12 hard disk drives.
Serial-Attached SCSI interface support.
Hot-plug hard disk drives, fan modules, and power units can be replaced without
shutting down the Disk Expansion Unit.
High availability
Redundant fan configuration
The Disk Expansion Unit features a redundant fan configuration. This allows the
Disk Expansion Unit to be used as usual even if one of the fans is defective.
Redundant power unit configuration
To achieve a redundant power unit configuration, use the optional redundant power
unit. In this case, the Disk Expansion Unit can be used as usual if one of the
power units is defective.
In general, the Disk Expansion Unit does not feature the redundant power unit
configuration. In this case, the failure of the power unit makes the Disk Expansion
Unit unavailable.
Monitoring feature
Status LEDs indicate the status of the Disk Expansion Unit.