Dell EMC Unity Series Operating and safety instructions

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
login as the service user.
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
x4
23
1 GbE
x4
2 3 MAC:
1
1
4
5
4
5
10 GbE
0
1
x4
2
3
1 GbE
x4
2
3
MAC:
1
1
4
5
4
5
Field Replacement Procedure
10 Unity All Flash and Unity Hybrid Field Replacement Procedure

Replacing the faulted 2U DPE
Take the following actions to remove the faulted 2U DPE and install the replacement
2U DPE into the system.
Disconnecting cables from the DPE
Procedure
1. Label the two power cords (A or B), release the cable retention bail, and unplug
the power cord from the power supply.
NOTICE
To ensure that all write-cache memory is saved (using battery backup power),
allow the storage processors to power off completely by waiting sixty seconds
after you unplug the power cables. Make sure no LEDs on either SP are lit
before continuing.
2. Label and unplug the LAN cables from the management port and all front-end
connections.
3. Label each SAS back-end cable and unplug it.
To unplug a SAS cable, pull back the release tab and then pull the cable
connector from the port.
4. Label each front-end I/O cable with the SP (A or B), slot number, and the
number of the port to which it is connected and then unplug it.
Removing the front bezel
Procedure
1. If the bezel has a lock, insert the key that shipped with your enclosure into the
lock, and turn the key to unlock the bezel.
2. Press the two latch buttons on the bezel surface to release the bezel from the
cabinet.
3. Pull the bezel off the cabinet and put it on a clean, static-free surface.
Replacing a faulted 2U DPE
Replacing the faulted 2U DPE 11

Figure 3 Removing the front bezel
CL5216
Removing the DPE from the cabinet
NOTICE
Do NOT remove parts, such as SP assemblies or disks, from the faulted DPE before
removing the enclosure from the cabinet. Doing so greatly increases the risk of
returning a component to the wrong slot in the replacement enclosure, which can
result in data loss.
Field Replacement Procedure
12 Unity All Flash and Unity Hybrid Field Replacement Procedure

CAUTION
The enclosure is heavy and should be installed into or removed from a rack by
two people. To avoid personal injury and/or damage to the equipment, do not
attempt to lift and install the enclosure into a rack without a mechanical lift
and/or help from another person.
L’armoire étant lourde, sa mise en place sur une rampe nécessite deux personnes.
Afin de ne pas vous blesser et/ou endommager le matériel, n’essayez pas de
soulever et d’installer l’armoire sur une rampe sans avoir recours à un relevage
mécanique et/ou à l’aide d’une autre personne.
Das Gehäuse ist schwer und sollte nur von zwei Personen in einem Rack
installiert werden. Zur Vermeidung von körperlichen Verletzungen und/oder der
Beschädigung des Gerätes, bitte das Gehäuse nicht ohne die Hilfe einer zweiten
Person anheben und einbauen.
Il contenitore è pesante e dev'essere installato nel rack da due persone. Per
evitare danni personali e/o all’apparecchiatura, non tentare di sollevare ed
installare in un rack il contenitore senza un sollevatore meccanico e/o l’aiuto di
un’altra persona.
Debido a su considerable peso, la instalación del compartimento en el bastidor
deben realizarla siempre dos personas. Para evitar daños personales o en el
equipo, el compartimento no debe levantarse ni instalarse en el bastidor sin la
ayuda de un elevador mecánico o de otra persona.
Procedure
1. Remove the four screws (two per side) that secure the front of the enclosure
to the front vertical channels of the cabinet, and save the screws.
Replacing a faulted 2U DPE
Removing the DPE from the cabinet 13

Figure 4 Removing the screws that secure the enclosure to the front of the cabinet
CL5754
2. With help from another person, slide the enclosure out of the cabinet and place
it on a sturdy, static-free work surface.
Figure 5 Sliding the enclosure out of the cabinet
CL5757
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.
Field Replacement Procedure
14 Unity All Flash and Unity Hybrid Field Replacement Procedure

Installing the empty replacement DPE on the rails
CAUTION
The enclosure is heavy and should be installed into or removed from a rack by
two people. To avoid personal injury and/or damage to the equipment, do not
attempt to lift and install the enclosure into a rack without a mechanical lift
and/or help from another person.
L’armoire étant lourde, sa mise en place sur une rampe nécessite deux personnes.
Afin de ne pas vous blesser et/ou endommager le matériel, n’essayez pas de
soulever et d’installer l’armoire sur une rampe sans avoir recours à un relevage
mécanique et/ou à l’aide d’une autre personne.
Das Gehäuse ist schwer und sollte nur von zwei Personen in einem Rack
installiert werden. Zur Vermeidung von körperlichen Verletzungen und/oder der
Beschädigung des Gerätes, bitte das Gehäuse nicht ohne die Hilfe einer zweiten
Person anheben und einbauen.
Il contenitore è pesante e dev'essere installato nel rack da due persone. Per
evitare danni personali e/o all’apparecchiatura, non tentare di sollevare ed
installare in un rack il contenitore senza un sollevatore meccanico e/o l’aiuto di
un’altra persona.
Debido a su considerable peso, la instalación del compartimento en el bastidor
deben realizarla siempre dos personas. Para evitar daños personales o en el
equipo, el compartimento no debe levantarse ni instalarse en el bastidor sin la
ayuda de un elevador mecánico o de otra persona.
Procedure
1. Lift the enclosure and, from the front of the cabinet, slide the enclosure onto
the rails.
Replacing a faulted 2U DPE
Installing the empty replacement DPE on the rails 15

Figure 6 Sliding the enclosure onto the rails
CL5343
2. Secure the front of the enclosure to the front vertical channels of the cabinet
using four screws (two per side) by installing all four screws, and then
tightening them.
Figure 7 Securing enclosure to the front of the cabinet
CL5752
Transferring parts from the faulted DPE to the replacement DPE
Use the procedures in this section to transfer the components from the faulted DPE
to the corresponding locations in the replacement DPE.
To help ensure the correct placement in the enclosure:
Field Replacement Procedure
16 Unity All Flash and Unity Hybrid Field Replacement Procedure

lTransfer one component at a time.
lTransfer power supplies.
lTransfer I/O modules and fillers.
lTransfer the SP assembly from the A side.
lTransfer the SP assembly from the B side.
lTransfer each disk and disk filler module to the SAME SLOT LOCATION that it
occupied in faulted DPE.
Removing an SP assembly
Procedure
1. Pull the torque limit screw handle out of the SP assembly (1).
2. Turn the handle counterclockwise to release the SP assembly from the
enclosure (1).
As the handle is turned, the SP assembly extracts out of the enclosure. When
outward movement stops, the SP assembly is ready for removal.
CAUTION
The SP assembly comes completely out of the enclosure. Be prepared to
support the SP assembly to avoid dropping it.
Replacing a faulted 2U DPE
Transferring parts from the faulted DPE to the replacement DPE 17

Figure 8 Remove an SP assembly
2
1
CL5720
3. Use the handle to pull the SP assembly outward enough to grasp the sides with
both hands (2). Then with both hands supporting the SP assembly, pull the SP
assembly fully out of the enclosure.
4. Place the SP assembly on a clean static-free work surface.
5. Repeat this procedure to remove the remaining SP assembly.
Installing an SP assembly
NOTICE
You must transfer the SP assembly to the exact corresponding slot in the replacement
chassis that it was removed from.
Procedure
1. Align the SP assembly with the enclosure slot and slide it into the slot until it
stops.
2. Turn the orange torque limit screw handle clockwise until you hear a click sound
from the handle (1). The click sound indicates the torque limit is reached and
the SP assembly is seated in the enclosure.
Field Replacement Procedure
18 Unity All Flash and Unity Hybrid Field Replacement Procedure

3. Push the orange torque limit screw handle into the SP assembly until you hear a
click sound from the handle (2). The click sound indicates screw handle is
secured in the assembly.
Figure 9 Installing the SP assembly
CL5721
1
2
4. Repeat this procedure to install the remaining SP assembly.
Transferring disks and disk filler modules
Starting with the disk or disk filler module in slot 0, transfer disks and any disk filler
modules one at a time from the faulted enclosure to the replacement enclosure.
NOTICE
Make sure to transfer the disks and any disk filler modules to the same slots in the
replacement enclosure that they occupied in the faulted enclosure. Installing disks out
of their original order results in data unavailability, and possible data loss.
Transfer the 3.5-inch disks and disk fillers
Removing a 3.5" disk
Procedure
1. Attach an ESD wristband to your wrist and the enclosure.
2. Press the orange tab in and pull the ejector handle out (1); do not pull the
handle past 45 degrees from the disk (2).
3. slowly pull the disk completely out of the slot (3).
Replacing a faulted 2U DPE
Transferring parts from the faulted DPE to the replacement DPE 19

Figure 10 Removing a 3.5" disk
CL5228
132
4. Place the disk on a static-free surface.
Installing a 3.5" disk
NOTICE
You must transfer the disk to the exact corresponding slot in the replacement chassis
that it was removed from.
Procedure
1. Attach an ESD wristband to your wrist and the enclosure in which you are
installing the disk.
2. Align the disk with the guides in the slot.
3. Ensure the ejector handle is open at a 45 degree angle from the drive.
4. Gently push the disk into the slot by pressing on the right-most thumb space.
5. Engage the ejector handle to fully seat the disk.
Field Replacement Procedure
20 Unity All Flash and Unity Hybrid Field Replacement Procedure