Dell EMC D-UN-DY-23 Exam Dumps

Get All Dell Unity Deploy 2023 Exam Questions with Validated Answers

D-UN-DY-23 Pack
Vendor: Dell EMC
Exam Code: D-UN-DY-23
Exam Name: Dell Unity Deploy 2023 Exam
Exam Questions: 36
Last Updated: September 10, 2025
Related Certifications: Dell Unity Deploy
Exam Tags: Intermediate Level Dell System Engineers
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Free Dell EMC D-UN-DY-23 Exam Actual Questions

Question No. 1

On a Dell Unity XT file system asynchronous replication session, how many system Snapshots are required to support replication?

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Correct Answer: A

On a Dell Unity XT file system asynchronous replication session, four system Snapshots are required to support replication. Two system Snapshots are created on the source file system, and two system Snapshots are created on the destination file system. The source system Snapshots are used to track the changes that need to be replicated, and the destination system Snapshots are used to apply the changes and maintain a consistent point-in-time copy of the source data. The system Snapshots are automatically created and managed by the replication engine and are not visible to the user.


Question No. 2

A company has an ESXi host installed with FC HBAs that is connected to a Dell Unity XT storage array. A 500 GB LUN is provisioned to this host from the Unity array and is in production. The VMware administrator has configured a new vSwitch with the NICs on the server intended for iSCSI traffic. The storage administrator is asked to configure software iSCSI and provision a new 1 TB LUN from the storage array using iSCSI.

What is a consideration when satisfying this request?

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Correct Answer: B

Mixing FC and iSCSI protocols for the same host and array is not supported by Dell EMC Unity. This can cause issues with multipathing, failover, and performance. The best practice is to use one protocol per host and array pair.If the host needs to access both FC and iSCSI LUNs from different arrays, then separate vSwitches and port groups should be used for each protocol.Reference: Dell EMC Unity: Best Practices Guide1, page 19.


Question No. 3

What is the result of enabling Data Reduction on a LUN in a consistency group containing three LUNs?

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Correct Answer: D

Data Reduction is a feature that reduces the amount of physical storage space required to store user data on a LUN. Data Reduction is enabled at the LUN level and applies to all the data in the LUN, including snapshots and thin clones. Data Reduction consists of two components: compression and deduplication. Compression reduces the size of data blocks by removing redundant information, while deduplication eliminates duplicate blocks across the LUN. When Data Reduction is enabled on a LUN, all writes to the LUN will go through the Data Reduction logic before being written to the storage pool. If the LUN is part of a consistency group, Data Reduction will be enabled on all the LUNs in the consistency group, and all writes to any LUN in the group will go through the Data Reduction logic. This ensures that the data in the consistency group is consistent and protected by the same Data Reduction settings.Reference:

Dell EMC Unity: Data Reduction Overview

Dell EMC Unity: Data Reduction Configuration and Best Practices


Question No. 4

A storage administrator recently disabled the Advanced Deduplication on a LUN.

Which Dell Unity XT action can be used to remove the Advanced Deduplication savings from LUN?

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Correct Answer: B

When Advanced Deduplication is disabled on a LUN, the existing data that was deduplicated remains in its reduced state, and only new data written to the LUN is not deduplicated. To remove the Advanced Deduplication savings from the LUN, the administrator must perform a Local LUN Move operation, which copies the data from the source LUN to a destination LUN without deduplication. The destination LUN must have Advanced Deduplication disabled, and must be in the same storage pool as the source LUN.After the Local LUN Move is completed, the source LUN can be deleted and the destination LUN can be renamed as the original LUN.Reference: Dell Unity: Data Reduction2, page 9.


Question No. 5

A storage engineer must grant access of a Dell Unity XT provisioned NFS datastore to ESXi-1.dell.local. The NAS server used to create the datastore is configured for NFSv4 protocol with Kerberos NFS owner authentication.

Which permission level is required for the ESXi host?

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Correct Answer: C

To grant access of a Dell Unity XT provisioned NFS datastore to an ESXi host, the permission level required for the host depends on the NFS protocol and authentication method used by the NAS server. For NFSv4 with Kerberos NFS owner authentication, the ESXi host must have the Read/write, enable Root permission level. This allows the ESXi host to read and write data to the datastore, as well as perform administrative tasks such as creating and deleting virtual machines. The Read/write permission level alone is not sufficient, as it does not allow the ESXi host to perform root-level operations on the datastore.The Read-only permission level only allows the ESXi host to read data from the datastore, but not write or modify it.Reference: Dell EMC Unity: Configuring hosts to access NFS1, page 9.


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