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Latest D-XTR-DS-A-24 Exam Question | D-XTR-DS-A-24 Interactive EBook

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

Topic
Details

Topic 1

Designing an XtremIO X2 Solution: For solution architects and storage designers, this comprehensive section addresses design considerations and best practices for XtremIO X2 solutions. It covers performance design considerations to meet required standards, and designing solutions with features like deduplication, compression, encryption, and replication.

Topic 2

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 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.

Topic 4

Host Configurations in XtremIO and X2 Environments: For system administrators and storage specialists, this section explores various host configurations crucial for optimal performance in XtremIO and XtremIO X2 environments. It covers common setups like host bus adapters (HBAs) and multipathing, as well as ESXi-specific configurations. The section also addresses configurations for other operating systems such as Microsoft Windows, Linux, Sun Solaris, IBM AIX, and HP-UX, ensuring broad compatibility and performance across different IT environments.

Topic 5

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.

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EMC Dell XtremIO Design Achievement Sample Questions (Q23-Q28):

NEW QUESTION # 23
When troubleshooting SAN performance problems what would be a key indicator of a physical issue?

A. High Buffer to Buffer Credits
B. High Class 3 Discards
C. High CRC error count
D. Low Buffer to Buffer Credits

Answer: C

Explanation:
When troubleshooting SAN performance problems, a key indicator of a physical issue is a high CRC (Cyclic Redundancy Check) error count. CRC errors are indicative of corrupt data packets during transmission, which often points to issues such as faulty cables, bad ports, or other physical problems in the network infrastructure.
High CRC error counts can lead to retransmissions, reduced throughput, and overall degradation of SAN performance. Addressing the physical components associated with high CRC error counts is essential for restoring optimal SAN operations.
References:
* While the specific Dell XtremIO Design document was not available, general SAN troubleshooting guidelines and best practices indicate that CRC errors are a critical metric to monitor for physical connectivity issues1.
* Additional resources on SAN performance troubleshooting can be found in the support documentation for the XtremIO Family on Dell's official website2.

NEW QUESTION # 24
What is an example of a Decision Support Systems (DSS) workload?

A. Online banking applications
B. Data Warehouse
C. Airline reservation systems
D. Order Entry applications

Answer: B

Explanation:
Explore
A Decision Support System (DSS) is a computer-based tool designed to aid individuals and organizations in making informed decisions. It integrates data, models, and analytical tools to solve complex problems and support strategic planning.A DSS is particularly effective in handling large volumes of data and applying sophisticated algorithms to generate insights that guide effective choices1.
A Data Warehouse is an example of a DSS workload because it is a centralized repository for storing large amounts of data from multiple sources.Its primary purpose is to facilitate reporting and analysis1. Data Warehouses are designed to perform queries and analysis on historical data and are an integral part of business intelligence that supports decision-making processes.
References:
* A comprehensive explanation of what constitutes a DSS and its applications can be found in various resources, including those that define a Data Warehouse as a key component of DSS1.
* The "Introduction to XtremIO X2 Storage Array" document by Dell Technologies provides insights into the system features that support DSS workloads like Data Warehouses2.

NEW QUESTION # 25
When creating XtremlO volumes for a host, which operating systems will benefit by changing the default logical block size for applications consisting of 4 KB I/Os?

A. VMware ESX and Microsoft Windows
B. Microsoft Windows and RHEL
C. RHEL and IBM AIX
D. Sun Solaris and HP-UX

Answer: A

Explanation:
When creating XtremIO volumes for a host, operating systems like Microsoft Windows and RHEL (Red Hat Enterprise Linux) will benefit from changing the default logical block size to better match applications that consist of 4 KB I/Os. This is because these operating systems are commonly used with applications that have a
4 KB I/O size, and aligning the logical block size with the application I/O size can improve performance by reducing the need for read-modify-write cycles.
For instance, in Windows environments, the NTFS file system often uses a default cluster size of 4 KB, which aligns well with a 4 KB logical block size.Similarly, for RHEL, the Ext4 file system can be configured with a
4 KB block size, which is a common setting for many Linux-based applications12.
References:
* Discussions on Dell Technologies community forums indicate that changing the logical block size can prevent issues with unaligned I/O and is part of a larger configuration strategy for optimizing storage performance3.
* The Reference Architecture Guide for Dell EMC XtremIO documents mention using a block size of 64 KB for database data and log file drives after the installation of the operating system in the VMs, for Windows and RHEL operating systems respectively12. This suggests that the block size is an important consideration for performance tuning in these environments.

NEW QUESTION # 26
A customer has a large ESXi server environment they are considering deploying to XtremlO for a VDI implementation. To determine a baseline of the environment, you areproceeding with documenting each server's CPU, NIC, and disk utilization statistics. The customer has provided you with direct CLI access to the servers to conduct thisassessment.
Which utility should be used to monitor these performance parameters?

A. iostat
B. esxtop
C. top
D. resxtop

Answer: B

NEW QUESTION # 27
What is an accurate statement about XtremIO XVC refresh operations?

A. O/S side device scan is not required
B. Unmount of a production volume is not required
C. Refreshed volume cannot be resized
D. Only snapshot-to-production refresh is supported

Answer: B

Explanation:
XtremIO XVC (XtremIO Virtual Copies) allows for efficient snapshot management and operations, including the refresh of volumes. One of the key features of XVC is that it enables the refresh of a production volume from a snapshot without requiring the volume to be unmounted from the host. This capability is designed to minimize disruption and maintain continuous availability of data to applications during refresh operations.The refresh operation is handled within the XtremIO storage array, and the production volume remains accessible to the host during this process1.
References:
* The Dell XtremIO Design Achievement document provides information on the capabilities and features of XtremIO X2 systems, including XVC operations1.
* Additional details on XVC refresh operations can be found in the support documentation for the XtremIO Family on Dell's official website2.

NEW QUESTION # 28
......

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