IBM N7800 Manuel utilisateur

IBM System Storage

N7000 Series Hardware and Service Guide

Covering the N7600, N7800, N7700, and N7900 systems

GC26-7953-13



IBM System Storage

N7000 Series Hardware and Service Guide

Covering the N7600, N7800, N7700, and N7900 systems

GC26-7953-13



Note:

Before using this information and the product it supports, be sure to read the general information in “Notices” on page 143.

The following paragraph does not apply to any country (or region) where such provisions are inconsistent with

local law.

INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION “AS IS” WITHOUT

WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE

IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states (or

regions) do not allow disclaimer of express or implied warranties in certain transactions; therefore, this statement

may not apply to you.

Order publications through your IBM representative or the IBM branch office serving your locality.

Safety notices

This section contains information about:

v“Safety notices and labels”

v“Laser safety” on page vi

v“Rack safety” on page vii

v“Fire suppression systems” on page ix

For information about environmental notices, see the IBM®Environmental Notices

and User Guide.

Safety notices and labels

When using this product, observe the danger, caution, and attention notices

contained in this guide. The notices are accompanied by symbols that represent the

severity of the safety condition.

The following sections define each type of safety notice and provide examples.

The following notices and statements are used in IBM documents. They are listed

below in order of increasing severity of potential hazards. Follow the links for

more detailed descriptions and examples of the danger, caution, and attention

notices in the sections that follow.

vNote: These notices provide important tips, guidance, or advice.

v“Attention notices” on page v: These notices indicate potential damage to

programs, devices, or data.

v“Caution notices” on page v: These statements indicate situations that can be

potentially hazardous to you.

v“Danger notices”: These statements indicate situations that can be potentially

lethal or extremely hazardous to you. Safety labels are also attached directly to

products to warn of these situations.

vIn addition to these notices, “Labels” on page v may be attached to the product

to warn of potential hazards.

Danger notices

About this task

A danger notice calls attention to a situation that is potentially lethal or extremely

hazardous to people. A lightning bolt symbol accompanies a danger notice to

represent a dangerous electrical condition. A sample danger notice follows.

DANGER

An electrical outlet that is not correctly wired could place

hazardous voltage on metal parts of the system or the devices that

attach to the system. It is the responsibility of the customer to

ensure that the outlet is correctly wired and grounded to prevent

an electrical shock. (D004)

iii

A comprehensive danger notice provides instructions on how to avoid shock

hazards when servicing equipment. Unless instructed otherwise, follow the

procedures in the following danger notice.

DANGER

When working on or around the system, observe the following

precautions:

Electrical voltage and current from power, telephone, and

communication cables are hazardous. To avoid a shock hazard:

vConnect power to this unit only with the IBM provided power

cord. Do not use the IBM provided power cord for any other

product.

vDo not open or service any power supply assembly.

vDo not connect or disconnect any cables or perform installation,

maintenance, or reconfiguration of this product during an

electrical storm.

vThe product might be equipped with multiple power cords. To

remove all hazardous voltages, disconnect all power cords.

vConnect all power cords to a properly wired and grounded

electrical outlet. Ensure outlet supplies proper voltage and phase

rotation according to the system rating plate.

vConnect any equipment that will be attached to this product to

properly wired outlets.

vWhen possible, use one hand only to connect or disconnect

signal cables.

vNever turn on any equipment when there is evidence of fire,

water, or structural damage.

vDisconnect the attached power cords, telecommunications

systems, networks, and modems before you open the device

covers, unless instructed otherwise in the installation and

configuration procedures.

vConnect and disconnect cables as described below when

installing, moving, or opening covers on this product or attached

devices.

To Disconnect:

1. Turn off everything (unless instructed otherwise).

2. Remove power cords from the outlet.

3. Remove signal cables from connectors.

4. Remove all cables from devices.

To Connect:

1. Turn off everything (unless instructed otherwise).

2. Attach all cables to devices.

3. Attach signal cables to the connectors.

4. Attach power cords to the outlets.

5. Turn on the devices.

(D005)

iv IBM System Storage: N7000 Series Hardware and Service Guide

Labels

As an added precaution, safety labels are often installed directly on products or

product components to warn of potential hazards.

The actual product safety labels may differ from these sample safety labels:

(L001)

DANGER

Hazardous voltage, current, or energy levels are present

inside any component that has this label attached. Do not

open any cover or barrier that contains this label.

(L003)

DANGER

Multiple power cords. The product might be equipped

with multiple power cords. To remove all hazardous

voltages, disconnect all power cords.

Caution notices

A caution notice calls attention to a situation that is potentially hazardous to

people because of some existing condition. A caution notice can be accompanied

by different symbols, as in the examples below:

If the symbol is... It means....

A hazardous electrical condition with less severity than

electrical danger.

A generally hazardous condition not represented by other

safety symbols.

A hazardous condition due to the use of a laser in the

product. Laser symbols are always accompanied by the

classification of the laser as defined by the U. S.

Department of Health and Human Services (for example,

Class I, Class II, and so forth).

Attention notices

An attention notice indicates the possibility of damage to a program, device, or

system, or to data. An exclamation point symbol may accompany an attention

notice, but is not required. A sample attention notice follows:

Attention: Do not bend a fibre cable to a radius less than 5 cm (2 in.);

you can damage the cable. Tie wraps are not recommended for optical

cables because they can be easily overtightened, causing damage to the

cable.

Safety notices v

Laser safety

Note: When using an NVRAM5 or NVRAM6 active/active or high availability

copper-fiber converter, the storage system must be installed in a restricted access

location.

CAUTION:

This product contains a Class 1M laser. Do not view directly with optical

instruments. (C028)

This equipment contains Class 1 laser products, and complies with FDA radiation

Performance Standards, 21 CFR Subchapter J and the international laser safety

standard IEC 825-2.

CAUTION:

Data processing environments can contain equipment transmitting on

system links with laser modules that operate at greater than Class 1 power

levels. For this reason, never look into the end of an optical fiber cable or

open receptacle. (C027)

Attention: In the United States, use only SFP or GBIC optical transceivers that

comply with the FDA radiation performance standards, 21 CFR Subchapter J.

Internationally, use only SFP or GBIC optical transceivers that comply with IEC

standard 825–1. Optical products that do not comply with these standards may

produce light that is hazardous to the eyes.

Usage restrictions

The optical ports of the modules must be terminated with an optical connector or

with a dust plug.

vi IBM System Storage: N7000 Series Hardware and Service Guide

Rack safety

Rack installation

About this task

DANGER

Observe the following precautions when working on or around

your IT rack system:

vHeavy equipment - personal injury or equipment damage might

result if mishandled.

vAlways lower the leveling pads on the rack cabinet.

vAlways install stabilizer brackets on the rack cabinet.

vTo avoid hazardous conditions due to uneven mechanical

loading, always install the heaviest devices in the bottom of the

rack cabinet. Always install servers and optional devices starting

from the bottom of the rack cabinet.

vRack-mounted devices are not to be used as shelves or work

spaces. Do not place objects on top of rack-mounted devices.

vEach rack cabinet might have more than one power cord. Be

sure to disconnect all power cords in the rack cabinet when

directed to disconnect power during servicing.

vConnect all devices installed in a rack cabinet to power devices

installed in the same rack cabinet. Do not plug a power cord

from a device installed in one rack cabinet into a power device

installed in a different rack cabinet.

vAn electrical outlet that is not correctly wired could place

hazardous voltage on the metal parts of the system or the

devices that attach to the system. It is the responsibility of the

customer to ensure that the outlet is correctly wired and

grounded to prevent an electrical shock.

(R001 part 1 of 2)

Safety notices vii

CAUTION:

vDo not install a unit in a rack where the internal rack ambient temperatures

will exceed the manufacturer's recommended ambient temperature for all your

rack-mounted devices.

vDo not install a unit in a rack where the air flow is compromised. Ensure that

air flow is not blocked or reduced on any side, front, or back of a unit used

for air flow through the unit.

vConsideration should be given to the connection of the equipment to the

supply circuit so that overloading of the circuits does not compromise the

supply wiring or overcurrent protection. To provide the correct power

connection to a rack, refer to the rating labels located on the equipment in the

rack to determine the total power requirement of the supply circuit.

v(For sliding drawers.) Do not pull out or install any drawer or feature if the rack

stabilizer brackets are not attached to the rack. Do not pull out more than one

drawer at a time. The rack might become unstable if you pull out more than

one drawer at a time.

v(For fixed drawers) This drawer is a fixed drawer and should not be moved for

servicing unless specified by manufacturer. Attempting to move the drawer

partially or completely out of the rack may cause the rack to become unstable

or cause the drawer to fall out of the rack.

(R001 part 2 of 2)

viii IBM System Storage: N7000 Series Hardware and Service Guide

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