Dell EMC Unity Series Replacement Manual
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Dell EMC Unity Series Replacement Manual

Field replacement procedure of faulted 2u dpe
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Field Replacement Procedure
Dell EMC Unity
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.
Before you
start......................................................................................................3
l
Summary of tasks for replacing a
l
l
Shutting down the
enclosure.................................................................................. 9
l
l
l
™
Family
DPE....................................................................8
.......................................................... 9
............................................................................... 11
................................................................................... 29

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  • Page 1 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.
  • Page 2 Returning a faulted part................29...
  • Page 3 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.
  • Page 4 Field Replacement Procedure 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.
  • Page 5 Replacing a faulted 2U DPE If 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.
  • Page 6 Field Replacement Procedure Table 1 Hardware acclimation times (systems and components) (continued) …then let the system or component If the last 24 hours of the acclimate in the new TRANSIT/STORAGE …and the OPERATING environment this many environment was this: environment is this: hours: <86°F (30°C) 4 hours...
  • Page 7 Replacing a faulted 2U DPE Do not remove a faulted replaceable unit until you have the replacement available. When 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.
  • Page 8 Field Replacement Procedure Table 2 Standard touch point colors Touch point color Description Terra-cotta This color indicates that you can perform the task, such as remove a (orange) component with a terra-cotta (orange) lever, while the system remains powered (up/on). Note Some tasks may require additional steps.
  • Page 9 Replacing a faulted 2U DPE 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.
  • Page 10 Field Replacement Procedure 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.
  • Page 11 Replacing a faulted 2U DPE 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.
  • Page 12 Field Replacement Procedure 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.
  • Page 13 Replacing a faulted 2U DPE 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.
  • Page 14 Field Replacement Procedure 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...
  • Page 15 Replacing a faulted 2U DPE 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.
  • Page 16 Field Replacement Procedure 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.
  • Page 17 Replacing a faulted 2U DPE Transfer one component at a time. Transfer power supplies. Transfer I/O modules and fillers. Transfer the SP assembly from the A side. Transfer the SP assembly from the B side. Transfer each disk and disk filler module to the SAME SLOT LOCATION that it occupied in faulted DPE.
  • Page 18 Field Replacement Procedure Figure 8 Remove an SP assembly 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.
  • Page 19 Replacing a faulted 2U DPE 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 4.
  • Page 20 Field Replacement Procedure Figure 10 Removing a 3.5" disk CL5228 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.
  • Page 21 Replacing a faulted 2U DPE Figure 11 Installing a 3.5" disk CL5229 Removing a disk filler module Procedure 1. Insert your thumb into the cutout on the right side of the disk filler module (2). 2. With your finger push in the latch on the left side of the disk filler module, and pull the module out of the slot.
  • Page 22 Field Replacement Procedure Figure 13 Installing a disk filler module CL5227 Transfer the 2.5-inch disks and disk fillers Removing a 2.5" 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).
  • Page 23 Replacing a faulted 2U DPE Installing a 2.5" 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.
  • Page 24 Field Replacement Procedure Figure 16 Removing a disk filler module CL5219 Installing a disk filler Procedure 1. Insert your thumb into the cutout on the right the disk filler module. 2. With your finger push in the latch on the left of the disk filler module and push the module into the slot until it clicks into place.
  • Page 25 Replacing a faulted 2U DPE 2. Plug each SAS cable to the SP assembly back-end port from which it was removed. 3. Connect the LAN cables to the management port and front-end connectors. 4. Connect the power cords to the power supplies. Initiate temporary root user on the system To gain temporary access on a fully powered on Unity system: Procedure...
  • Page 26 Field Replacement Procedure result, you can add the Service Key Generator to your desktop or launch the it in app mode. c. Select the Product Release. d. Select the Challenge String method. e. Copy the current challenge string to the Service Key Generator, complete the remaining required fields, and then click Generate.
  • Page 27 Replacing a faulted 2U DPE 3. After the command completes, exit the root user session. 4. As the service user, clear the counters and restart both SPs into normal mode: Issue both of these commands to each SP. svc_rescue_state -c svc_shutdown -r Verifying the DPE status Procedure...
  • Page 28 Field Replacement Procedure Figure 20 25-drive DPE tag location M 01 ID /S 9 (O 6- 78 3- 45 : 12 ID /S 6 - 7 - 4 5 CL5780 2. Repeat this process to remove the tag from the replacement DPE. This tag can be discarded.
  • Page 29 Replacing a faulted 2U DPE Verifying the new 2U DPE Verify that the new 2U DPE is recognized by your system, and operating correctly using the procedure that follows. Procedure 1. In Unisphere, select System View. 2. On the Summary page, confirm that the system status is OK. 3.
  • Page 30 Field Replacement Procedure © Copyright 2016-2017 Dell Inc. or its subsidiaries. All rights reserved. Published July 2017 Dell believes the information in this publication is accurate as of its publication date. The information is subject to change without notice. THE INFORMATION IN THIS PUBLICATION IS PROVIDED “AS-IS.“ DELL MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WITH RESPECT TO THE INFORMATION IN THIS PUBLICATION, AND SPECIFICALLY DISCLAIMS IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

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Unity all flashUnity hybrid

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