EMC® VNXe®

Replacing a battery backup unit in a diskprocessor enclosure302-000-203REV 02

July, 2015

This document describes how to replace a faulted battery backup unit (BBU) in a DPE (diskprocessor enclosure).

The BBU is part of an SP assembly and is accessible from the rear of the enclosure.

Topics include:

l Before you start..........................................................................................................2l Handling replaceable units........................................................................................ 2l Replacing the faulted hardware component............................................................... 5l Returning a faulted part........................................................................................... 12

Before you startBefore you begin this procedure, ensure that you have received the new part and havecorrectly identify its intended location in the system. Refer to your Unisphere online help(Servicing your system > Adding or replacing faulted hardware components > Replace afaulted hardware component) for instructions on how to identify failures, order new partsand handle hardware components.

NOTICE

This procedure involves storage processor (SP) reboots coordinated to ensure that atleast one SP is running at all times. During an SP reboot, data will be unavailable to front-or back-end connections that are not duplicated on the peer SP.

Handling replaceable unitsThis section describes the precautions that you must take and the general proceduresthat you must follow when removing, installing, and storing any replaceable unit.

Avoiding electrostatic discharge (ESD) damageWhen replacing or installing hardware units, you can inadvertently damage the sensitiveelectronic circuits in the equipment by simply touching them. Electrostatic charge thathas accumulated on your body discharges through the circuits. If the air in the work areais very dry, running a humidifier in the work area will help decrease the risk of ESDdamage. Follow the procedures below to prevent damage to the equipment.

Read and understand the following instructions:

l Provide enough room to work on the equipment.

l Clear the work site of any unnecessary materials or materials that naturally build upelectrostatic charge, such as foam packaging, foam cups, cellophane wrappers, andsimilar items.

l Do not remove replacement or upgrade units from their antistatic packaging until youare ready to install them.

l Before you begin service, gather together the ESD kit and all other materials you willneed.

l Once servicing begins, avoid moving away from the work site; otherwise, you maybuild up an electrostatic charge.

l Use ESD anti-static gloves or an ESD wristband (with strap).If using an ESD wristband with a strap:

n Attach the clip of the ESD wristband to the ESD bracket or bare metal on acabinet/rack or enclosure.

n Wrap the ESD wristband around your wrist with the metal button against yourskin.

n If a tester is available, test the wristband.

l If an emergency arises and the ESD kit is not available, follow the procedures inEmergency Procedures (without an ESD kit).

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Emergency procedures (without an ESD kit)In an emergency when an ESD kit is not available, use the following procedures to reducethe possibility of an electrostatic discharge by ensuring that your body and thesubassembly are at the same electrostatic potential.

NOTICE

These procedures are not a substitute for the use of an ESD kit. Follow them only in theevent of an emergency.

l Before touching any unit, touch a bare (unpainted) metal surface of the cabinet/rackor enclosure.

l Before removing any unit from its antistatic bag, place one hand firmly on a baremetal surface of the cabinet/rack or enclosure, and at the same time, pick up the unitwhile it is still sealed in the antistatic bag. Once you have done this, do not movearound the room or touch other furnishings, personnel, or surfaces until you haveinstalled the unit.

l When you remove a unit from the antistatic bag, avoid touching any electroniccomponents and circuits on it.

l If you must move around the room or touch other surfaces before installing a unit,first place the unit back in the antistatic bag. When you are ready again to install theunit, repeat these procedures.

Hardware acclimation timesSystems and components must acclimate to the operating environment before applyingpower. This requires the unpackaged system or component to reside in the operatingenvironment for up to 16 hours in order to thermally stabilize and prevent condensation.

Table 1 Hardware acclimation times (systems and components)

If the last 24 hours of theTRANSIT/STORAGEenvironment was this:

…and the OPERATINGenvironment is this:

…then let the system orcomponent acclimate inthe new environmentthis many hours:

Temperature Humidity

Nominal68-72°F (20-22°C)

Nominal40-55% RH

Nominal 68-72°F (20-22°C)40-55% RH

0-1 hour

Cold<68°F (20°C)

Dry<30% RH

<86°F (30°C) 4 hours

Cold<68°F (20°C)

Damp≥30% RH

<86°F (30°C) 4 hours

Hot>72°F (22°C)

Dry<30% RH

<86°F (30°C) 4 hours

Hot>72°F (22°C)

Humid30-45% RH

<86°F (30°C) 4 hours

Humid45-60% RH

<86°F (30°C) 8 hours

Replacing a battery backup unit in a disk processor enclosure

Emergency procedures (without an ESD kit) 3

Table 1 Hardware acclimation times (systems and components) (continued)

If the last 24 hours of theTRANSIT/STORAGEenvironment was this:

…and the OPERATINGenvironment is this:

…then let the system orcomponent acclimate inthe new environmentthis many hours:

Humid≥60% RH

<86°F (30°C) 16 hours

Unknown <86°F (30°C) 16 hours

NOTICE

l If there are signs of condensation after the recommended acclimation time haspassed, allow an additional eight (8) hours to stabilize.

l Systems and components must not experience changes in temperature and humiditythat are likely to cause condensation to form on or in that system or component. Donot exceed the shipping and storage temperature gradient of 45°F/hr (25°C/hr).

l Do NOT apply power to the system for at least the number of hours specified in Table1 on page 3. If the last 24 hours of the transit/storage environment is unknown, thenyou must allow the system or component 16 hours to stabilize in the newenvironment.

Removing, installing, or storing replaceable unitsUse the following precautions when removing, handling, or storing replaceable units:

CAUTION

Some replaceable units have the majority of their weight in the rear of the component.Ensure that the back end of the replaceable unit is supported while installing orremoving it. Dropping a replaceable unit could result in personal injury or damage to theequipment.

NOTICE

l For a module that must be installed into a slot in an enclosure, examine the rearconnectors on the module for any damage before attempting its installation.

l A sudden jar, drop, or even a moderate vibration can permanently damage somesensitive replaceable units.

l Do not remove a faulted replaceable unit until you have the replacement available.

l When handling replaceable units, avoid electrostatic discharge (ESD) by wearing ESDanti-static gloves or an ESD wristband with a strap. For additional information, see: Avoiding electrostatic discharge (ESD) damage on page 2.

l Handle a replaceable unit gently. A sudden jar, drop, or vibration can permanentlydamage some replaceable units.

l Avoid touching any exposed electronic components and circuits on the replaceableunit.

l Never use excessive force to remove or install a replaceable unit. Take time to readthe instructions carefully.

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l Store a replaceable unit in the antistatic bag and the specially designed shippingcontainer in which you received it. Use the antistatic bag and special shippingcontainer when you need to return the replaceable unit.

l Replaceable units must acclimate to the operating environment before applyingpower. This requires the unpackaged component to reside in the operatingenvironment for up to 16 hours in order to thermally stabilize and preventcondensation. Refer to Hardware acclimation times on page 3 to ensure thereplaceable unit has thermally stabilized to the operating environment.

NOTICE

Your storage system is designed to be powered on continuously. Most components arehot swappable; that is, you can replace or install these components while the storagesystem is running. However, the system requires that:

l Front bezels should always be attached to ensure EMI compliance. Make sure youreattach the bezel after replacing a component.

l Each slot should contain a component or filler panel to ensure proper air flowthroughout the system.

Unpacking a partProcedure

1. Wear ESD gloves or attach an ESD wristband to your wrist and the enclosure in whichyou are installing the part.

2. Unpack the part and place it on a static-free surface.

3. If the part is a replacement for a faulted part, save the packing material to return thefaulted part.

Replacing the faulted hardware componentTake the following actions to remove the faulted hardware part and install thereplacement hardware part into the system.

Summary of tasks for replacing a BBUTo replace a faulted BBU you must complete the tasks below in the order listed. Thisdocument provides instructions for completing each task.

1. Prepare the SP with the faulted BBU for service.

2. Remove the SP assembly.

3. Remove the top cover from the SP assembly.

4. Remove the faulted BBU.

5. Unpack the replacement BBU.

6. Install the replacement BBU.

7. Replace the top cover on the SP assembly.

8. Reinstall the SP assembly.

9. Reboot the SP.

10. Verify that the system recognizes the replacement BBU.

Replacing a battery backup unit in a disk processor enclosure

Unpacking a part 5

11. Return the faulted BBU.

Preparing the storage processor (SP) for serviceTo protect your VNXe system from accidental data loss during this maintenance activity,you must prepare the SP for service. You prepare an SP for service by putting it in Servicemode.

NOTICE

Both SPs must NOT be in Service mode at the same time.

Procedure

1. Open Unisphere™ and select Settings, then Service System.

2. Log in with your service password.

3. In the System Components column, select the storage processor with the part you arereplacing (SP A or SP B).

4. Under Service Actions, select Enter Service Mode, then Execute service action.

5. In the Service Confirmation dialog box click OK.

Putting an SP into Service mode takes about 10 minutes to complete.

6. Wait until the SP fault LED is flashing alternating amber and blue before continuing tothe next task.

The storage processor fault LED will flash alternating amber and blue while the SPremains in Service mode and is receiving active power (Figure 1 on page 6).

Figure 1 SP fault LED

046-004-901_03

HDMI

Removing an SP assemblyBefore you begin

Locate the faulted SP assembly with the flashing alternating amber and blue Fault LED.Figure 2 Location of SP assembly fault LED

046-004-901_03

HDMI

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NOTICE

DO NOT REMOVE an SP assembly while the "Unsafe to remove SP" LED shown below is lit.

Refer to Figure 3 on page 7 while performing the procedure that follows.

Procedure

1. Disconnect the network and all other cables from the back of the SP assembly; labelthe cables with the port numbers from which you removed them.

NOTICE

Do not remove any cables from the other SP assembly.

CAUTION

The SP assembly comes completely out of the enclosure. In addition to holding thelatches, be prepared to support the SP assembly to avoid dropping it.

2. Squeeze the orange levers on the latches on the sides of the SP assembly to releasethe latches, and then pull the latches outward.

3. Pull out the latches until they are fully extended and the SP assembly is released fromthe enclosure.

4. Use the latches to slide the SP assembly about half-way out of the enclosure.

5. Use both hands to support the SP assembly and pull it fully out of the enclosure.

6. Place the SP assembly on a clean, flat static-free work surface.

Figure 3 Removing an SP assembly

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7. Wait for all LED indicators on the removed SP to turn OFF before continuing.

This will occur in about 60 seconds.

Replacing a battery backup unit in a disk processor enclosure

Removing an SP assembly 7

Removing the SP top coverRefer to Figure 4 on page 8 while performing the procedure that follows.

Procedure

1. Press the blue button on the cover.

2. Push the cover straight back 1/4 inch.

3. Lift the cover up.

Figure 4 Removing the SP top cover

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Removing the BBURefer to Figure 5 on page 9 while performing the procedure that follows.

Procedure

1. Press the white tabs on each side of the cable connector while gently pulling upwardto release it from the processor board.

You may need to gently rock the connector to remove it.

2. Push the blue tab to the left to release the BBU, and then carefully pull it from itscarrier on the processor board.

3. Place the BBU on a static-free surface.

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Figure 5 Removing the BBU

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Installing the BBURefer to Figure 6 on page 10 while performing the procedure that follows.

Procedure

1. Slide the BBU into the canister on the SP until the release tab catches.

2. Attach the cable connector to the SP processor board.

Replacing a battery backup unit in a disk processor enclosure

Installing the BBU 9

Figure 6 Installing the BBU

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Replacing the SP top coverRefer to Figure 7 on page 10 while performing the procedure that follows.

Procedure

1. Align the cover tabs with the notches in the canister.

2. Slide it forward 1/4 inch until the tab secures the cover.

Figure 7 Replacing the SP top cover

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Installing an SP assemblyRefer to Figure 8 on page 11 while performing the procedure that follows.

Procedure

1. Pull out the latches on each side of the SP assembly and make sure they stay in theopen position.

2. Align the SP assembly with the enclosure opening and push it straight into theenclosure.

The latches begin to close when they contact the enclosure edges.

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3. Close the right and left latches to fully seat the SP assembly in the enclosure.

An audible click indicates that the latches are secure.

Figure 8 Installing an SP assembly

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4. Ensure that the SP assembly starts powering up after installation. If not, reseat the SPassembly.

5. Reconnect the cables to the back of the SP assembly being sure to connect all cablesto the same ports from which you removed them.

Rebooting an SPWhen you have returned the SP assembly to the enclosure, reboot the recently servicedSP to ensure that it leaves Service mode using the procedure that follows.

Procedure

1. From Unisphere, select Settings, then Service System.

2. Log in with your service password.

3. In the System Components column, select the storage processor currently in Servicemode (SP A or SP B).

4. Under Service Actions, select Reboot, then Execute service action.

It may take up to 12 minutes for the system to complete its reboot to return to normalmode.

5. Either refresh your browser or follow the on-screen instructions to bring the softwareout of service mode and restore full-function Unisphere.

Verifying the operation of a partVerify that the new part is recognized by your system, and operating correctly using theprocedure that follows.

Procedure

1. In Unisphere™, select System > System Health.

2. Select the part in the System Component list or the graphical view:

Replacing a battery backup unit in a disk processor enclosure

Rebooting an SP 11

Note

To verify the status of a part contained within the storage processor, like a batterybackup unit, for example, you must locate the part in the System Component list.

l In the System Component list, the part should be marked with a status OK icon:

l In the graphical view, the part should be highlighted green.

If the system health monitor shows the part as faulted, contact your service provider.

Returning a faulted partWe appreciate the return of defective material within 5 business days (for US returns). ForInternational customers, please return defective material within 5-10 business days. Allinstructions and material required to return your defective part were supplied with yourgood part shipment.

Procedure

1. Package the faulted part in the shipping box that contained the replacement part, andseal the box.

2. Ship the failed part to your service provider as described in the instructions that wereincluded with the replacement part.

3. [Optional] For more information about returning customer-replaceable parts, fromUnisphere, click Support > Need more Help? > Customer Replaceable Parts > Return aCustomer Replaceable Part to enter the EMC Online Support website.

If your screen does not show the Return a customer replaceable part option, contactyour service provider for instructions on what to do next.

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Copyright © 2014-2015 EMC Corporation. All rights reserved. Published in USA.

Published July, 2015

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For the most up-to-date regulatory document for your product line, go to EMC Online Support (https://support.emc.com).

Replacing a battery backup unit in a disk processor enclosure

Returning a faulted part 13