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

The questions for D-XTR-OE-A-24 were last updated On Apr 12, 2025

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Question No. 1

Which two successors are created when an XtremlO snapshot is taken of a production volume?

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Correct Answer: B

When an XtremIO snapshot is taken of a production volume, it creates two snapshot entities.

These snapshots are identified as S1 and S2.

The creation of S1 and S2 ensures that the data consistency and integrity are maintained while providing a point-in-time copy of the production volume.

These snapshots can be used for various purposes such as backup, testing, or disaster recovery without impacting the performance of the production volume.


Dell XtremIO Snapshots Guide

XtremIO Best Practices for Snapshot Management

Question No. 2

Which performance metric is a measure of the time taken to complete an operation?

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Correct Answer: B

Latency is the performance metric that measures the time taken to complete an operation. It is often described as the delay between a user's action and the response from the system to that action. In the context of storage systems like XtremIO, latency refers to the time it takes from when a read or write request is issued to when it is completed1.

Here's a breakdown of the options provided:

A . Bandwidth: Bandwidth measures the amount of data that can be transferred over a network or processed by a system in a given amount of time. It is not a direct measure of time taken to complete an operation2.

B . Latency: Latency is the correct answer as it specifically measures the time delay in completing an operation. It is a critical metric in storage and networking environments, where lower latency is generally indicative of faster system performance1.

C . IOPS (Input/Output Operations Per Second): IOPS is a performance metric that measures the number of read and write operations that can be performed in one second. While it is related to system performance, it does not measure the time taken to complete a single operation2.

D . Throughput: Throughput refers to the rate at which data is processed or transferred. It is similar to bandwidth and measures performance over time but does not specifically measure the time taken to complete an individual operation2.


Question No. 3

A Microsoft Windows host is connected to a traditional hybrid array infrastructure. Host resource utilization increases dramatically during VSS operations. Which host-based

feature can XtremIO leverage to reduce host resource utilization?

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Correct Answer: D

Offloaded Data Transfer (ODX) is a feature in Windows that enables efficient data transfer within or between compatible storage arrays, minimizing the host resources used during these operations. When a Microsoft Windows host is connected to an XtremIO array, leveraging ODX can significantly reduce the host's CPU and network resource utilization during Volume Shadow Copy Service (VSS) operations1.

ODX Functionality: ODX offloads the data transfer workload from the host to the storage array itself. This means that data can be moved or copied within the array without passing through the host, thus not consuming host bandwidth or processing power1.

VSS Operations: During VSS operations, which create snapshots or backups of data, there can be a significant amount of data movement. Utilizing ODX allows these operations to be handled more efficiently by the storage array, freeing up the host to perform other tasks1.

XtremIO Compatibility: XtremIO supports ODX, which allows it to handle data movement operations internally. This is particularly beneficial in environments where frequent snapshots or backups are taken, as it ensures minimal impact on host performance1.

Other Options: While MPIO (OA) is used for path redundancy and load balancing, VAAI (OB) offloads certain storage operations to the array, and VSI (OC) is a set of VMware integration tools, none of these specifically address the reduction of host resource utilization during VSS operations as effectively as ODX1.


Question No. 4

A new XtremlO X2-S single X-Brick cluster has been installed into a systems administrator's environment. The administrator needs assistance with configuring a group of

volumes with the largest capacity possible.

What is the largest size supported for each volume?

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Correct Answer: B

The XtremIO X2-S storage array is designed to support a significant amount of capacity per volume. Based on the information available, the largest size supported for each volume in a single X-Brick cluster is 64 TB1. Here's a detailed explanation:

XtremIO X2-S Capacity: The XtremIO X2-S array allows for scaling up with additional SSDs to increase capacity. A single X-Brick can support a considerable number of SSDs, which contributes to the total volume size it can support1.

Volume Size: The volume size refers to the amount of data storage space that can be allocated for use by applications and services. In the case of XtremIO X2-S, the maximum volume size is designed to accommodate large-scale storage needs1.

Configuration: When configuring volumes on the XtremIO X2-S, administrators can specify the desired size up to the maximum supported limit. This ensures that the storage can be tailored to the specific requirements of the environment1.

Largest Supported Size: The option of 64 TB (OB) aligns with the high-capacity design of the XtremIO X2-S array, making it the correct answer for the largest volume size supported per volume on a single X-Brick cluster1.


Question No. 5

Which key components within XtremlO X1 provide an enterprise level of continuous availability?

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Correct Answer: A

XtremIO X1 provides continuous availability through a combination of data protection mechanisms and snapshot capabilities:

Data Protection: XtremIO X1 uses a unique data protection scheme known as XtremIO Data Protection (XDP), which offers better efficiency and rebuild performance compared to traditional RAID configurations. XDP provides high levels of fault tolerance and ensures data integrity, which is essential for continuous availability1.

Snapshots: XtremIO's snapshot technology allows for the creation of instant, space-efficient copies of data volumes. These snapshots can be used for various purposes, including backup and recovery, testing, and development, without impacting the performance of the primary system1.

Continuous Availability: The combination of XDP and snapshots enables XtremIO X1 to provide an enterprise level of continuous availability by ensuring that data is protected against hardware failures and that operations can continue uninterrupted during maintenance or in the event of a disaster1.

XtremIO's approach to data protection and snapshots is designed to meet the demands of enterprise environments where downtime is not an option, and data must be accessible at all times1.


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