Dell EMC Unity Series Bedienungs- und Sicherheitshinweise

Field Replacement Procedure

Dell EMC Unity™Family

Dell EMC Unity All Flash and Unity Hybrid

Replacing a faulted 2U DPE

302-002-585

REV 02

July 2017

This document describes how to replace a faulted 2U DPE in

Unity All Flash and Unity Hybrid systems.

You will remove the faulted 12-slot or 25-slot 2U DPE (disk processor enclosure) and

install the replacement DPE, of the same type, from the front of the system. During this

procedure you will transfer certain parts from the faulted DPE into the replacement

DPE.

NOTICE

This task on the system involves powering down the SPs. When all SPs are down, all I/O

services stop and hosts lose access to the system. Once one or both SPs become

available to the system, I/O services to hosts will resume.

WARNING

On a system with Data at Rest Encryption enabled, follow the standard process to

replace faulted parts. Improperly removing hardware can cause data to be

inaccessible.

Replacing the DPE and both SPs requires a special procedure since the keystore is

tied to the hardware. Do not replace all three parts at once, rather retain an SP

until the DPE is online before replacing it. If all hardware was replaced, restore the

keystore from a backup.

lBefore you start......................................................................................................3

lSummary of tasks for replacing a DPE....................................................................8

lIdentifying and locating the faulted 2U DPE .......................................................... 9

lShutting down the enclosure.................................................................................. 9

lReplacing the faulted 2U DPE ............................................................................... 11

lVerifying the new 2U DPE ................................................................................... 29

lReturning a faulted part............................................................................. 29

Before you start

NOTICE

This task on the system involves powering down the SPs. When all SPs are down, all

I/O services stop and hosts lose access to the system. Once one or both SPs become

available to the system, I/O services to hosts will resume.

Before performing this procedure, you should disconnect all network shares and LUNs

from each host to prevent data loss. Once the system is fully powered up, you can

reconnect the hosts to these storage resources.

WARNING

Pay careful attention when installing SAS cable connectors into the system SAS

ports. Improper installation can cause damage to the chassis requiring a

complete chassis replacement. If you meet resistance when installing the cable

connector into the SAS port, ensure that you are installing the connector in the

correct orientation before continuing.

Additional resources

As part of an improvement effort, revisions of the software and hardware are

periodically released. Therefore, some functions described in this document might not

be supported by all versions of the software or hardware currently in use. The product

release notes provide the most up-to-date information on product features. Contact

your technical support professional if a product does not function properly or does not

function as described in this document.

Where to get help

Support, product, and licensing information can be obtained as follows:

Product information

For product and feature documentation or release notes, go to Unity Technical

Documentation at: www.emc.com/en-us/documentation/unity-family.htm.

Troubleshooting

For information about products, software updates, licensing, and service, go to Online

Support (registration required) at: https://Support.EMC.com. After logging in, locate

the appropriate Support by Product page.

Technical support

For technical support and service requests, go to Online Support at: https://

Support.EMC.com. After logging in, locate Create a service request. To open a

service request, you must have a valid support agreement. Contact your Sales

Representative for details about obtaining a valid support agreement or to answer any

questions about your account.

Special notice conventions used in this document

DANGER

Indicates a hazardous situation which, if not avoided, will result in death or

serious injury.

Replacing a faulted 2U DPE 3

WARNING

Indicates a hazardous situation which, if not avoided, could result in death or

serious injury.

CAUTION

Indicates a hazardous situation which, if not avoided, could result in minor or

moderate injury.

NOTICE

Addresses practices not related to personal injury.

Note

Presents information that is important, but not hazard-related.

Handling replaceable units

This section describes the precautions that you must take and the general procedures

that you must follow when removing, installing, and storing any replaceable unit.

Avoiding electrostatic discharge (ESD) damage

When replacing or installing hardware units, you can inadvertently damage the

sensitive electronic circuits in the equipment by simply touching them. Electrostatic

charge that has accumulated on your body discharges through the circuits. If the air in

the work area is very dry, running a humidifier in the work area will help decrease the

risk of ESD damage. Follow the procedures below to prevent damage to the

equipment.

Be aware of the following requirements:

lProvide enough room to work on the equipment.

lClear the work site of any unnecessary materials or materials that naturally build

up electrostatic charge, such as foam packaging, foam cups, cellophane wrappers,

and similar items.

lDo not remove replacement or upgrade units from their antistatic packaging until

you are ready to install them.

lBefore you begin service, gather together the ESD kit and all other materials you

will need.

lOnce servicing begins, avoid moving away from the work site; otherwise, you may

build up an electrostatic charge.

lUse ESD anti-static gloves or an ESD wristband (with strap).

If using an ESD wristband with a strap:

nAttach the clip of the ESD wristband to the ESD bracket or bare metal on a

cabinet/rack or enclosure.

nWrap the ESD wristband around your wrist with the metal button against your

skin.

nIf a tester is available, test the wristband.

Field Replacement Procedure

4Unity All Flash and Unity Hybrid Field Replacement Procedure

lIf an emergency arises and the ESD kit is not available, follow the procedures in

Emergency Procedures (without an ESD kit).

Emergency procedures (without an ESD kit)

In an emergency when an ESD kit is not available, use the following precautions to

reduce the possibility of an electrostatic discharge by ensuring that your body and the

subassembly are at the same electrostatic potential.

NOTICE

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

the event of an emergency.

lBefore touching any unit, touch a bare (unpainted) metal surface of the cabinet/

rack or enclosure.

lBefore removing any unit from its antistatic bag, place one hand firmly on a bare

metal surface of the cabinet/rack or enclosure, and at the same time, pick up the

unit while it is still sealed in the antistatic bag. Once you have done this, do not

move around the room or touch other furnishings, personnel, or surfaces until you

have installed the unit.

lWhen you remove a unit from the antistatic bag, avoid touching any electronic

components and circuits on it.

lIf 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

the unit, repeat these procedures.

Hardware acclimation times

Systems and components must acclimate to the operating environment before

applying power. This requires the unpackaged system or component to reside in the

operating environment for up to 16 hours in order to thermally stabilize and prevent

condensation.

Refer to the table, Table 1 on page 5, to determine the precise amount of

stabilization time required.

Table 1 Hardware acclimation times (systems and components)

If the last 24 hours of the

TRANSIT/STORAGE

environment was this:

…and the OPERATING

environment is this:

…then let the system

or component

acclimate in the new

environment this many

hours:

Temperature Humidity

Nominal

68-72°F

(20-22°C)

Nominal

40-55% 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

Replacing a faulted 2U DPE

Handling replaceable units 5

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

If the last 24 hours of the

TRANSIT/STORAGE

environment was this:

…and the OPERATING

environment is this:

…then let the system

or component

acclimate in the new

environment this many

hours:

Hot

>72°F (22°C)

Dry

<30% RH

<86°F (30°C) 4 hours

Hot

>72°F (22°C)

Humid

30-45% RH

<86°F (30°C) 4 hours

Humid

45-60% RH

<86°F (30°C) 8 hours

Humid

≥60% RH

<86°F (30°C) 16 hours

Unknown <86°F (30°C) 16 hours

NOTICE

lIf there are signs of condensation after the recommended acclimation time has

passed, allow an additional eight (8) hours to stabilize.

lSystems and components must not experience changes in temperature and

humidity that are likely to cause condensation to form on or in that system or

component. Do not exceed the shipping and storage temperature gradient of

45°F/hr (25°C/hr).

lDo NOT apply power to the system for at least the number of hours specified in

the table, Table 1 on page 5. If the last 24 hours of the transit/storage

environment is unknown, then you must allow the system or component 16 hours

to stabilize in the new environment.

Removing, installing, or storing replaceable units

Use 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 or removing it. Dropping a replaceable unit could result in personal

injury or damage to the equipment.

NOTICE

lFor a module that must be installed into a slot in an enclosure, examine the rear

connectors on the module for any damage before attempting its installation.

lA sudden jar, drop, or even a moderate vibration can permanently damage some

sensitive replaceable units.

Field Replacement Procedure

6Unity All Flash and Unity Hybrid Field Replacement Procedure

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

lWhen handling replaceable units, avoid electrostatic discharge (ESD) by wearing

ESD anti-static gloves or an ESD wristband with a strap. For additional

information, refer to Avoiding electrostatic discharge (ESD) damage on page 4.

lAvoid touching any exposed electronic components and circuits on the replaceable

unit.

lNever use excessive force to remove or install a replaceable unit. Take time to

read the instructions carefully.

lStore a replaceable unit in the antistatic bag and the specially designed shipping

container in which you received it. Use the antistatic bag and special shipping

container when you need to return the replaceable unit.

lReplaceable units must acclimate to the operating environment before applying

power. This requires the unpackaged component to reside in the operating

environment for up to 16 hours in order to thermally stabilize and prevent

condensation. Refer to Hardware acclimation times on page 5 to ensure the

replaceable unit has thermally stabilized to the operating environment.

NOTICE

Your storage system is designed to be powered on continuously. Most components

are hot swappable; that is, you can replace or install these components while the

storage system is running. However, the system requires that:

lFront bezels should always be attached to ensure EMI compliance. Make sure you

reattach the bezel after replacing a component.

lEach slot should contain a component or filler panel to ensure proper air flow

throughout the system.

Unpacking a part

Procedure

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

which you 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 the faulted part.

Standard touch point colors

Touch points are component locations where you can:

lGrip the hardware to remove or install a component.

lOpen or close a latch.

lTurn a knob to open, close, or adjust a component.

Standard touch point colors are terra-cotta (orange) or blue.

Note

Within this documentation, the color orange is used instead of terra-cotta for

simplicity.

Replacing a faulted 2U DPE

Standard touch point colors 7

Table 2 Standard touch point colors

Touch point color Description

Terra-cotta

(orange)

This color indicates that you can perform the task, such as remove a

component with a terra-cotta (orange) lever, while the system remains

powered (up/on).

Note

Some tasks may require additional steps.

Blue This color indicates that a shutdown of the system or component is

required before you can perform the task, such as removing a

component with a blue lever.

Summary of tasks for replacing a DPE

To replace a DPE, you must complete the tasks below in the order in which they

appear. This document provides instructions for completing each task:

1. Identify the faulted enclosure.

2. Shutdown the faulted enclosure.

3. Disconnect the cables from the faulted enclosure.

4. Remove the faulted enclosure's front bezel.

5. Remove the faulted enclosure and place it on a work surface.

6. Unpack the replacement enclosure.

7. Install the replacement enclosure in the cabinet.

8. Transfer the faulted enclosure's components to the replacement enclosure:

a. Transfer the storage processor (SP) assemblies.

b. Transfer all the disks and any disk filler modules.

9. Connect the cables to the back of the replacement enclosure.

10. Power up the replacement enclosure.

11. Update the enclosure with the system WWN and serial number.

12. Verify enclosure status.

13. Reinstall the enclosure's front bezel.

14. Verify the operation of the replacement enclosure.

Tools required:

lPhillips screwdriver

lWire cutters or equivalent

Field Replacement Procedure

8Unity All Flash and Unity Hybrid Field Replacement Procedure

Identifying and locating the faulted 2U DPE

Before you replace a faulted 2U DPE , you must locate its placement within the

storage system by using Unisphere.

Using Unisphere, locate the faulted 2U DPE in the enclosure.

Procedure

1. In Unisphere, select System View.

2. Select the Enclosures page.

Select the DPE in the Enclosure dropdown menu and select the Front view of

the enclosure. Locate the new DPE shown in this enclosure view.

3. Locate the faulted 2U DPE marked orange and displayed in the Enclosure view

shown.

Figure 1 Faulted 25-drive DPE - example

Shutting down the enclosure

This system shut down or power down process involves placing both SPs into Service

mode before eventually disconnecting the power cords for the power supplies. When

all SPs are down, all I/O services stop and hosts lose access to the system.

It is recommended that you disconnect all network shares, LUNs, and VMware

datastores from each host to prevent data loss. When the system is fully powered on,

you can reconnect the hosts to these storage resources.

Use the procedure that follows to place both SPs into Service mode to safely stop all

system processes before you replace the faulted DPE.

Note

See the

DC-Powered Unity Enclosures: Installation and operation guide

for instructions

on how to power down and power up a DC powered system (physical deployments

only).

Procedure

1. Collect and record site and system details:

NOTICE

Immediately upon booting the SPs in the replacement enclosure you may need

to contact EMC Remote Support to perform certain steps that require root

access to the system.

Replacing a faulted 2U DPE

Identifying and locating the faulted 2U DPE 9

Service Password

Serial Number

Site ID

OE version

2. Using an SSH/Telnet client, such as PuTTY, type the system IP address and

3. Put both SPs in Service Mode and power off the system:

Issue both of these commands to each SP.

svc_rescue_state -s

svc_shutdown --halt-local

Note

This process can take between 10 and 20 minutes to complete. During this time,

the connection to the system will be lost and you will not have access to

Unisphere or the online help.

4. Wait until the SP fault LEDs on both storage processors are flashing alternating

amber and blue before continuing to the next task.

The SP fault LED flashes alternating amber and blue while the SP remains in

Service mode and is receiving active power.

Figure 2 SP fault LED

10 GbE

0 1

1 GbE

2 3 MAC:

10 GbE

1 GbE

MAC:

Field Replacement Procedure

10 Unity All Flash and Unity Hybrid Field Replacement Procedure

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