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.
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.
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.
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Before you start......................................................................................................3
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Summary of tasks for replacing a DPE....................................................................8
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Identifying and locating the faulted 2U DPE .......................................................... 9
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Shutting down the enclosure.................................................................................. 9
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Replacing the faulted 2U DPE ............................................................................... 11
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Verifying the new 2U DPE ................................................................................... 29
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