Free Dell EMC D-XTR-DS-A-24 Exam Actual Questions

The questions for D-XTR-DS-A-24 were last updated On Jun 12, 2025

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Question No. 1

A customer's environment is configured as follows:

. Dual X-Brick cluster

. 8 ESXi hosts with 2 Emulex HBAs

. Each ESXi hosts has 8 LUNs

. Each LUN is visible through 4 paths

What should be the LUN queue depth setting per path?

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Correct Answer: A

The LUN queue depth setting per path in a customer's environment configured with a dual X-Brick cluster, 8 ESXi hosts with 2 Emulex HBAs, each ESXi host having 8 LUNs, and each LUN visible through 4 paths, should be set to 1281.

This is based on the best practice recommendation for Emulex HBAs in an XtremIO environment, as mentioned in the Dell Community1. The LUN queue depth on the Emulex HBA should be set to 1281. However, this setting might need to be adjusted based on the specific storage environment and the other storage arrays that are being used12.


Question No. 2

How many DAE Row Controllers are present within the DAE chassis of an XtremIO X2 cluster?

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Correct Answer: C

In an XtremIO X2 cluster, the Disk Array Enclosure (DAE) chassis typically contains two Row Controllers. These Row Controllers are responsible for managing the operations of the SSDs within the DAE and ensuring data availability and integrity. The design of the DAE in an XtremIO X2 cluster is such that it provides a balance between performance, redundancy, and cost-effectiveness, with two Row Controllers being a common configuration for managing the SSDs effectively.


The Dell XtremIO Design Achievement document provides information on the critical components of the XtremIO and X2 systems, including the DAE chassis and its controllers1.

Additional details on the architecture and components of the XtremIO X2 systems can be found in the Introduction to XtremIO X2 Storage Array white paper2.

Question No. 3

A customer is adding a new volume to their XtremlO environment using the RESTful API. When attempting to create the volume, a response code of 400 is returned. What is the

cause of this response code?

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Correct Answer: C

A response code of 400 in the context of RESTful API operations generally indicates that the request made by the client was malformed or contains a syntax error. This means that the data stream sent by the client to the server did not follow the rules as defined by the API specification. It could be due to various reasons such as incorrect request format, missing required parameters, or invalid parameter values1.

In the case of the Dell XtremIO environment, if a customer receives a 400 response code when attempting to create a volume via the RESTful API, it is likely due to a syntax error in the API command. The customer should review the API request to ensure that it conforms to the expected format and includes all necessary information as per the XtremIO API documentation2.


Community discussions on the Dell Technologies website where similar issues have been addressed and the cause of the 400 error was identified as a syntax error in the RESTful API command2.

General information about the meaning of a 400 Bad Request error in REST APIs, which supports the conclusion that a syntax error is the cause1.

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Question No. 4

XtremlO encrypts data that is stored on which drive?

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Correct Answer: D

The Dell EMC XtremIO X2 Storage Array uses Data at Rest Encryption (D@RE) to encrypt data. This encryption occurs on the Self Encrypting Drives (SEDs) within the Data Availability Enclosures (DAE). The DAEs house the physical drives where the actual data is stored and encrypted1.


Introduction to Dell EMC XtremIO X2 Storage Array document2.

Dell EMC XtremIO v6.3 document1.

Question No. 5

Which I/O elevator setting should be selected for use with XtremIO?

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Correct Answer: A

The I/O elevator setting for use with XtremIO should be selected based on the operating system and the workload characteristics. For systems running Red Hat Enterprise Linux (RHEL) and connecting to XtremIO X2 storage arrays, the recommended I/O elevator settings are either noop or deadline. The noop scheduler is often recommended for SSDs and all-flash arrays like XtremIO because it is a simple FIFO queue that does not do any merging or reordering of I/O requests, which is unnecessary for SSDs due to their low latency and high performance1.


Dell EMC Ready Solutions for Oracle with XtremIO X2 document1.

Support documentation for XtremIO Family on Dell's official website2.

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