Cisco Firepower 3500 Technical document

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Cisco Firepower Management Center 750, 1500, 2000, 3500, and 4000 Hardware Installation Guide

APPENDIX

Replacing a RAID Battery Backup Unit

Assembly on the Firepower Management

Center 3500

Use these instructions to replace the RAID battery backup unit (BBU) assembly on Firepower

Management Center 3500. You should power down the device before you replace the BBU assembly

during a maintenance window. See the following sections for more information:

•BBU Overview, page A-1

•Working in an ESD Environment, page A-1

•Safety Warnings, page A-2

•Preparing to Replace the BBU, page A-2

•BBU Replacement Instructions, page A-4

•Monitoring the BBU, page A-10

BBU Overview

The Firepower Management Center 3500 contains a battery backup unit (BBU) that protects the integrity

of cached data on the RAID controllers by providing backup power if there is a complete loss of AC

power or a brief power interruption. Cisco recommends that you replace this BBU once a year.

A new BBU replacement assembly is available from Cisco. The assembly includes a new BBU model

(BBU8) with a five year lifespan and a new plastic battery tray. The BBU is held in place in the plastic

battery tray (see in Figure A-1) that securely locks into the base of the Firepower MC3500 chassis. You

remove the installed BBU and tray and replace them with the new BBU assembly.

Working in an ESD Environment

Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. ESD damage occurs

when electronic components are improperly handled and can result in complete or intermittent failures.

Always follow ESD-prevention procedures when you remove and replace components. Ensure that the

chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it

makes good skin contact. Connect the grounding clip to an unpainted surface of the chassis frame to

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Appendix A Replacing a RAID Battery Backup Unit Assembly on the Firepower Management Center 3500

Safety Warnings

safely ground unwanted ESD voltages. To guard against ESD damage and shocks, the wrist strap and

cord must operate properly. If no wrist strap is available, ground yourself by touching the metal part of

the chassis.

Caution For the safety of your equipment, periodically check the resistance value of the anti-static strap. It should

be between 1 and 10 megohms (Mohm).

Safety Warnings

This section contains important safety warnings for the installation and use of the appliance.

Warning

Before working on a system that has an On/Off switch, turn OFF the power and unplug the power

cord. Statement 1

Warning

Only trained and qualified personnel should be allowed to install, replace, or service this

equipment. Statement 1030

Warning

This equipment must be grounded. Never defeat the ground conductor or operate the equipment

in the absence of a suitably installed ground conductor. Contact the appropriate electrical

inspection authority or an electrician if you are uncertain that suitable grounding is available.

Statement 1024

Warning

Do not work on the system or connect or disconnect cables during periods of lightning activity.

Statement 1001

Warning

Read the installation instructions before connecting the system to the power source. Statement

1004

Warning

Ultimate disposal of this product should be handled according to all national laws and

regulations. Statement 1040

Preparing to Replace the BBU

Tools You Supply

You must provide a #2 Phillips screwdriver and a razor knife to replace the BBU.

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Cisco Firepower Management Center 750, 1500, 2000, 3500, and 4000 Hardware Installation Guide

Appendix A Replacing a RAID Battery Backup Unit Assembly on the Firepower Management Center 3500 Preparing to Replace the BBU

BBU Components

The following illustration shows the BBU assembly components you should be familiar with when

replacing the BBU.

Figure A-1 BBU Assembly Components

Firepower Management Center 3500 Components

This section helps you identify the components of your Firepower MC3500 system. If you are near the

system, you can also use the Quick Reference Label provided on the inside of the chassis cover to assist

in identifying components.

1BBU tray 2BBU

3BBU wire connector and cable ——

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Cisco Firepower Management Center 750, 1500, 2000, 3500, and 4000 Hardware Installation Guide

Appendix A Replacing a RAID Battery Backup Unit Assembly on the Firepower Management Center 3500

BBU Replacement Instructions

Figure A-2 MC3500 Chassis Components

BBU Replacement Instructions

The following sections explain how to replace the RAID BBU in your Firepower MC3500. Follow the

instructions in the order presented:

•Removing the Cover, page A-5

•Removing the Power Supply Air Duct, page A-5

•Removing the Old BBU Assembly, page A-6

•Installing the New BBU Assembly, page A-7

•Replacing the Power Supply Air Duct, page A-8

•Replacing the Cover, page A-9

•Disposing the Old BBU, page A-10

1Rack handles 9Processor air duct

2Power supply air duct 10 Processor and heatsink

3Battery backup unit (BBU) assembly 11 System memory

4Drive bay 12 Bridge board

5Power distribution board 13 Fan assembly

6Power supply modules 14 Midplane board

7Server board 15 Mini control panel

8PCI riser assembly 16 Disk drive bays

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Cisco Firepower Management Center 750, 1500, 2000, 3500, and 4000 Hardware Installation Guide

Appendix A Replacing a RAID Battery Backup Unit Assembly on the Firepower Management Center 3500 BBU Replacement Instructions

Removing the Cover

The Firepower MC3500 must be operated with the chassis cover in place to ensure proper cooling. You

will need to remove the top cover to add or replace components inside of the device.

Note A nonskid surface or a stop behind the MC3500 may be needed to prevent the device from sliding on

your work surface.

To remove the Firepower MC3500 cover:

Step 1 Remove the security screw if it is installed (see “1” in Figure A-3).

Step 2 Cut the warranty label on the unit if it is intact.

Step 3 While holding in the blue button on the top of the FireSIGHT 3500 in (see “3” in Figure A-3), slide the

top cover back until it stops (see “4” in Figure A-3).

Step 4 Insert your finger in the notch (see “2” in Figure A-3) and lift the cover upward to remove it.

Figure A-3 Removing the MC3500 Cover

Removing the Power Supply Air Duct

The RAID BBU is located under the power supply air duct (see Figure A-2). To remove the air duct,

follow these steps:

Step 1 Locate the power supply air duct (see “1” in Figure A-4).

Step 2 Unscrew the thumbscrew (see “2” in Figure A-4) using your fingers or a Phillips head screwdriver. Be

careful to retain the thumbscrew.

Step 3 Carefully lift the air duct upward and set aside.

1Security screw 3Top cover

2Button 4Notch

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Cisco Firepower Management Center 750, 1500, 2000, 3500, and 4000 Hardware Installation Guide

Appendix A Replacing a RAID Battery Backup Unit Assembly on the Firepower Management Center 3500

BBU Replacement Instructions

Figure A-4 Removing the Power Supply Air Duct

Removing the Old BBU Assembly

The RAID BBU is held in place in a plastic battery tray (see in Figure A-1) that securely locks into the

base of the chassis via two tabs on the underside of the battery holder. These tabs securely slide into two

notches located on the bottom of the chassis. Cisco recommends that you remove the BBU assembly as

described in the following procedure.

Note The plastic tray that comes with your replacement BBU assembly is different from the one currently

installed. You can discard the old plastic tray after you install your replacement BBU assembly.

To remove the BBU:

Step 1 Carefully remove the cable from the rear of the BBU unit by gently pulling the connector (not the cable)

uniformly out of the BBU connector. Note the cable polarity as you remove the connector. This is

important when reattaching the cable.

Step 2 Locate the side tab of the BBU assembly tray (see “2” in Figure A-5). This tab secures the BBU assembly

by locking the battery tray into place.

Step 3 Push the side tab inward towards the battery, apply downward pressure on the BBU assembly, and slide

the assembly towards the front of the chassis, away from the power supply.

1Power supply air duct 2Thumbscrew

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Appendix A Replacing a RAID Battery Backup Unit Assembly on the Firepower Management Center 3500 BBU Replacement Instructions

Step 4 Remove the BBU assembly from the chassis.

Installing the New BBU Assembly

Once the old BBU assembly is removed from the chassis, you can install the replacement BBU assembly

which comes pre-assembled for ease of installation. Cisco recommends that you install the replacement

BBU assembly as described in the following procedure.

To install the replacement BBU assembly:

Step 1 Locate the tabs that secure the BBU assembly to the chassis. They are located on the inside floor of the

chassis, on the left side, near the front of the chassis by the power supply (see Figure A-6).

Step 2 Align the clips on the bottom of the plastic battery tray (see “1” in Figure A-5) with the tabs on the

chassis.

Step 3 Slide the BBU assembly unit toward the power supply until the tabs engage with the notches in the

chassis.

Caution Make sure the side clip (see “2” in Figure A-5) has fully engaged with the chassis to lock the tray into

place. Failure to properly secure the battery tray may allow the BBU assembly to move freely inside the

chassis. This could cause a malfunction, such as loosening of the BBU cable, which would jeopardize

the battery protection.

Step 4 Carefully connect the cable to the new BBU. Make sure you observe cable polarity and uniformly insert

the connector into the BBU connector.

Figure A-5 Underside of BBU Battery Tray

1Tray clips 2Side clip

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Cisco Firepower Management Center 750, 1500, 2000, 3500, and 4000 Hardware Installation Guide

Appendix A Replacing a RAID Battery Backup Unit Assembly on the Firepower Management Center 3500

BBU Replacement Instructions

Figure A-6 Installing the Replacement BBU Assembly

Replacing the Power Supply Air Duct

Replace the power supply air duct once the replacement BBU assembly is in place and connected (see

Figure A-7).

To replace the air duct:

Step 1 Locate the power supply air duct and the thumbscrew that you removed previously.

Step 2 Align the power supply air duct over the BBU assembly, the power distribution board, and the matching

thumbscrew hole. Note that the thumbscrew attaches to a chassis standoff underneath the power

distribution board (see “4” in Figure A-7).

Make sure that no cables are pinched by any part of the power supply air duct before securing the duct.

Step 3 Tighten the thumbscrew using your fingers or a Phillips head screwdriver.

1BBU and tray assembly 2Chassis tabs

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Cisco Firepower Management Center 750, 1500, 2000, 3500, and 4000 Hardware Installation Guide

Appendix A Replacing a RAID Battery Backup Unit Assembly on the Firepower Management Center 3500 BBU Replacement Instructions

Figure A-7 Replacing the Power Supply Air Duct

Replacing the Cover

To replace the Firepower MC3500 cover:

Step 1 Place the cover over the device as shown in Figure A-8 so that the side edges of the cover sit just inside

the chassis sidewalls.

Step 2 Slide the cover forward to engage the recessed edge of the cover with the front of the chassis (see “2” in

Figure A-8). Make sure the cover latch clicks into place.

Step 3 Insert the security screw at the center of the top cover (see “3” in Figure A-8).

1Installed BBU assembly 4Chassis standoff

2Power supply air duct 5Power distribution unit

3Thumbscrew ——

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Cisco Firepower Management Center 750, 1500, 2000, 3500, and 4000 Hardware Installation Guide

Appendix A Replacing a RAID Battery Backup Unit Assembly on the Firepower Management Center 3500

Monitoring the BBU

Figure A-8 Replacing the MC3500 Cover

Disposing the Old BBU

Warning

Do not damage the battery pack in any way. Toxic chemicals can be released if it is damaged.

The material in the battery pack contains heavy metals that can contaminate the environment. Federal,

state, and local regulations prohibit the disposal of rechargeable batteries in public landfills. Be sure to

recycle old battery packs properly. Cisco would like to remind you that you must comply with all

applicable battery disposal and hazardous material handling laws and regulations in the country or other

jurisdiction where you are using the BBU.

Monitoring the BBU

After you install a new BBU, use the Intel®RAID BIOS Console Battery Module configuration utility

to reset the battery recharge cycle counter to zero. The utility is independent of the operating system and

can be accessed at device start up by pressing <Ctrl><G>.

To view the BBU information:

Step 1 At boot, press <Ctrl><G> when prompted.

Step 2 From the main menu of the Intel®RAID BIOS Console, choose Adapter Properties.

Step 3 Click Next to view the second Adapter Properties screen.

Step 4 In the Battery Backup field at the top left of the Adapter Properties screen, click Present.

Step 5 The Battery Module screen appears. This screen contains the following information:

— Battery information

— Design information

— Capacity information

1Top cover 3Security screw

2Recessed edge ——

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