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D-XTR-DS-A-24 Valid Exam Format | Online D-XTR-DS-A-24 Training

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EMC D-XTR-DS-A-24 Exam Syllabus Topics:

Topic
Details

Topic 1

XtremIO and X2 Operations and Management: For storage administrators and IT professionals, this section of the exam covers the core components and functionalities of XtremIO and XtremIO X2 storage systems. It encompasses hardware and software components specific to XtremIO X2, architectural distinctions between XtremIO and XtremIO X2, and management of the XtremIO X2 Management Server.

Topic 2

Positioning XtremIO and X2: For sales engineers and solution architects, this section explores the benefits and positioning of XtremIO and XtremIO X2 storage solutions. It highlights All-Flash array advantages and XtremIO's specific benefits, including high performance and efficiency. The section covers XMS Simulator usage for demonstrations, post-processing operation benefits, and XtremIO Data Protection (XDP) performance value.

Topic 3

XtremIO X2 Optimization and Performance Management: For performance analysts and storage administrators, this section addresses XtremIO X2 system optimization and performance management. It provides an overview of performance metrics, XtremIO X2 architecture, and the application of environmental, host, and benchmarking tools for performance measurement and improvement.

EMC Dell XtremIO Design Achievement Sample Questions (Q29-Q34):

NEW QUESTION # 29
A customer has a workload with the following attributes:
. Generates 500,000 IOPs
. Maximum bandwidth of 14 GB/s
Which XtremlO X2 solution should be recommended to the customer?

A. 1 X-Brick
B. 4 X-Bricks
C. 3 X-Bricks
D. 2 X-Bricks

Answer: B

Explanation:
To accommodate a workload that generates 500,000 IOPS with a maximum bandwidth of 14 GB/s, the recommended XtremIO X2 solution would be 4 X-Bricks.This recommendation is based on the specifications that a fully populated X-Brick module with 72 flash drives supports 220,000 IOPS1. Therefore, to support
500,000 IOPS, more than two X-Bricks are required. Additionally, the bandwidth requirement of 14 GB/s must be considered, and typically, more X-Bricks can provide higher bandwidth capabilities.
References:
* Dell EMC Ready Solutions for Oracle with XtremIO X2 document2.
* Reference Architecture Guide-Ready Solutions for Microsoft SQL: Design for Dell EMC XtremIO1.

NEW QUESTION # 30
Which slot on a physical XtremIO X2 XMS holds the server's boot disk?

A. 0
B. 1
C. 2
D. 3

Answer: C

Explanation:
The Dell XtremIO X2 XMS is designed with a specific slot for the server's boot disk. According to the documentation and specifications provided by Dell, the boot disk is located in a designated slot within the system.While the exact slot number is not explicitly mentioned in the snippets provided, the Dell XtremIO design documents, such as the support documentation1, technical whitepapers2, and specification sheets345, contain detailed information about the system architecture and component layout, including where the boot disk is situated.
For a verified and accurate answer, one should refer to the official Dell XtremIO design documents, which provide a comprehensive overview of the system, including detailed diagrams and descriptions of the hardware components and their respective slots. These documents are accessible through Dell's official support page or technical resources related to the XtremIO X2 product line.

NEW QUESTION # 31
Which statement is accurate about deduplication on an XtremlO array?

A. As the deduplication ratio increases, bandwidth increases while latency decreases
B. As the deduplication ratio increases, bandwidth increases while latency increases
C. As the deduplication ratio decreases, bandwidth decreases while latency increases
D. As the deduplication ratio decreases, bandwidth increases while latency decreases

Answer: A

Explanation:
Deduplication on an XtremIO array is a process where redundant data blocks are identified and only unique data is stored. This results in a reduction of the physical storage required, which is referred to as the deduplication ratio. As the deduplication ratio increases, meaning more redundant data is eliminated, the bandwidth effectively increases because less data needs to be transferred over the network.Additionally, latency decreases because the system has to process fewer data blocks, leading to faster response times1.
References:
* The Dell EMC XtremIO X2: Next-Generation All-Flash Array document explains that XtremIO's in-memory deduplication is global across the entire cluster, which means that only unique data is written to the SSDs.This inline deduplication not only saves significant capacity but can also improve performance1.
* The Introduction to XtremIO X2 Storage Array document details how the XtremIO X2 Storage Array automatically reduces (deduplicates and compresses) data on the fly, as it enters the system, which reduces the amount of data written to flash, improving the longevity of the media and driving down cost2.

NEW QUESTION # 32
What is a benefit of XtremIO All Flash arrays?

A. Cost per I/O per GB is the same as spinning disk
B. Cost per I/O per GB is lower than spinning disk
C. Cost per GB is the same as spinning disk
D. Cost per GB is lower than spinning disk

Answer: B

NEW QUESTION # 33
You need to design a VDI solution for a customer. Which recommended best practices should be used for VDI environments?

A. Align data on 8 kB boundariesPut all VDI-related data on one large LUN
B. Align data on 8 kB boundariesPut the master VM image on an XtremIO LUN
C. Align data on 4 kB boundariesPut persona and user data on XtremIO LUNs
D. Align data on 4 kB boundariesAllocate multiple XtremIO LUNs to each host

Answer: D

Explanation:
When designing a Virtual Desktop Infrastructure (VDI) solution, it's important to consider the best practices for performance and efficiency.
Option OB, "Align data on 4 kB boundariesAllocate multiple XtremIO LUNs to each host", is a recommended best practice for VDI environments12.This is because aligning data on 4 kB boundaries can help to optimize the performance of the storage system12.The XtremIO storage array uses a 4 kB data block size, so aligning data on 4 kB boundaries can help to ensure that data is efficiently stored and retrieved12.
Allocating multiple XtremIO LUNs to each host can also help to distribute the I/O load more evenly across the storage system, which can improve performance12.This is particularly important in VDI environments, where there can be a high level of concurrent I/O activity12.
The other options, while they may be part of the overall process, are not specifically recommended for VDI environments:
* Option OA, "Align data on 8 kB boundariesPut all VDI-related data on one large LUN", is not recommended because aligning data on 8 kB boundaries does not match the 4 kB data block size used by the XtremIO storage array12.Also, putting all VDI-related data on one large LUN can lead to performance issues due to the high level of concurrent I/O activity in VDI environments12.
* Option OC, "Align data on 4 kB boundariesPut persona and user data on XtremIO LUNs", is not recommended because persona and user data typically do not require the high performance provided by XtremIO LUNs12.
* Option OD, "Align data on 8 kB boundariesPut the master VM image on an XtremIO LUN", is not recommended because aligning data on 8 kB boundaries does not match the 4 kB data block size used by the XtremIO storage array12.
Therefore, the verified answer isB.Align data on 4 kB boundariesAllocate multiple XtremIO LUNs to each host, as it provides the most suitable solution for VDI environments according to the Dell XtremIO Design Achievement document12.

NEW QUESTION # 34
......

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