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Free Dell EMC Dell XtremIO Design Achievement D-XTR-DS-A-24 Exam Questions

Page: 1 / 6 Total 60 questions

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Question 1

A customer wants you to design an XtremlO solution for an Oracle RAC application environment. The customer maintains two data centers and requires replication to a third site

for disaster recovery purposes. The solution must be fault tolerant and capable of remaining online during planned and unplanned downtime events due to governmental

regulations.

Which Dell EMC technology should be recommended to the customer to meet these requirements?

Correct Answer: A. MetroPoint
Explanation:

For a customer who wants to design an XtremIO solution for an Oracle RAC application environment, maintains two data centers, and requires replication to a third site for disaster recovery purposes, the recommended Dell EMC technology is MetroPoint1.

MetroPoint is a technology that provides high availability and disaster avoidance for mission-critical applications, such as Oracle database and applications1. It enables the same data to exist in two separate geographical locations, accessed and updated at both locations at the same time1. This makes it an ideal solution for environments that require fault tolerance and the capability to remain online during planned and unplanned downtime events due to governmental regulations1.


Question 2

A customer has Microsoft Windows servers running Microsoft Multipath IO (MPIO). Which path selection policy should be set for optimal performance when connected to an XtremlO cluster?

Correct Answer: A. Round Robin
Explanation:

For Microsoft Windows servers running MPIO, the optimal path selection policy when connected to an XtremIO cluster is Round Robin. This policy allows for load balancing across all available paths by distributing I/O evenly, which can lead to better performance and utilization of the storage resources. The Round Robin policy ensures that no single path is overloaded with I/O requests, which helps in maintaining consistent performance levels1.


The Dell EMC SC Series: Microsoft Multipath IO Best Practices document provides insights into the recommended path selection policies for optimal performance2.

Additional information on MPIO and path selection policies can be found in the Dell EMC knowledge base articles1.

Question 3

Which performance monitoring utility can be used for data gathering on Windows?

Correct Answer: B. PerfMon
Explanation:

The Performance Monitor (PerfMon) is a built-in tool in Windows that allows users to monitor and analyze the performance of their system in real time123456. It provides a visual display of built-in Windows performance counters, either in real time or as a way to review historical data7. You can add performance counters to Performance Monitor by dragging and dropping, or by creating custom Data


Question 4

Which performance capture technology helps to evaluate cloud candidacy?

Correct Answer: D. Live Optics
Explanation:

Live Optics is a performance capture technology that helps to evaluate cloud candidacy by providing real-time data collection and visual analysis of an environment's current workload performance. It is designed to offer insights into the infrastructure's capabilities and to identify opportunities for optimization or migration to cloud services. Live Optics captures, analyzes, and visualizes the workload characteristics to help organizations make informed decisions about cloud adoption based on their specific performance metrics and requirements1.


The Dell XtremIO Design documents and training materials emphasize the importance of understanding workload performance and characteristics when considering cloud solutions, which is facilitated by tools like Live Optics1.

Additional information on the role of performance capture technologies in cloud candidacy evaluation can be found in the Dell Technologies Education Services resources2.

Question 5

What is true about the flow control feature when configuring the iSCSI SAN from the host to the XtremlO cluster?

Correct Answer: B. Disable flow control features on the server, switch(s) and array ports
Explanation:

When configuring the iSCSI SAN from the host to the XtremIO cluster, it is recommended to disable flow control features on the server, switches, and array ports. Flow control can cause a performance impact by serializing the flow for iSCSI ports, which is not desirable in high-performance storage solutions like XtremIO1. Disabling flow control ensures that the storage array operates without the limitations that flow control can impose, thus maintaining optimal performance.


Dell EMC Switch Configuration Guide for iSCSI and Software-Defined Storage provides guidelines for the design and configuration of storage networks for iSCSI SAN, which includes recommendations on flow control settings2.

Community discussions on Dell Technologies website where it is mentioned that the latest best practices advise against enabling flow control for iSCSI with XtremIO, as it limits performance1.

Question 6

Which document should an administrator consult to obtain recent changes, features, and limits for XtremIO?

Correct Answer: B. XtremIO Release Notes
Explanation:

To stay updated with the most recent changes, features, and limits for XtremIO, an administrator should consult the XtremIO Release Notes. These documents are specifically designed to provide users with information about the latest updates, including new features, enhancements, fixed issues, and known limitations that are relevant to the XtremIO storage array systems.


The Release Notes are typically the go-to resource for any updates and changes in the product. They are part of the standard documentation provided by Dell for their products1.

For detailed information on the features and design of XtremIO, the ''Dell XtremIO Design Achievement'' document provides insights into the product features, functionality, use cases, and configurations2.

Question 7

A user attempts to create a quorum disk for a host cluster. Volume parameters are:

* Size = 1000 Kb

. Name 1 MB_Vol

However, the volume creation fails. What caused the process to fail?

Correct Answer: C. Volume size is too small
Explanation:

The process to create a quorum disk for a host cluster failed because the volume size is too small12.

In a storage environment, the size of the volume plays a crucial role. If the volume size is too small, it may not be able to accommodate the data required for the quorum disk, leading to a failure in the creation process12.

In this case, the volume size is specified as 1000 Kb, which is likely insufficient for a quorum disk in a host cluster environment12. Therefore, increasing the volume size could potentially resolve this issue12.


Question 8

Which values are required to enter a generic workload into the XtremIO Sizing Tool?

Correct Answer: D. IOPs, I/O size, and bandwidth
Explanation:

When entering a generic workload into the XtremIO Sizing Tool, the required values are IOPs, I/O size, and bandwidth. These parameters are essential for accurately sizing the storage system to ensure it can handle the expected workload. IOPs (Input/Output Operations Per Second) measure the number of read/write operations the storage system can perform in a second. I/O size refers to the size of each read/write operation, and bandwidth is the total amount of data that can be transferred in a given time frame.


The XtremIO Performance Documents discuss different workload testing parameters, including I/O size and limits, which are relevant to sizing the array1.

The Dell XtremIO Design Achievement document outlines the critical components and best practices for designing solutions with XtremIO and X2 storage systems, which would include considerations for workload sizing2.

Question 9

What is a benefit of XtremIO All Flash arrays?

Correct Answer: D. Cost per I/O per GB is lower than spinning disk
Explanation:

XtremIO All Flash arrays provide a significant benefit in terms of cost per I/O per GB when compared to traditional spinning disks. This is due to the higher performance and efficiency of flash storage, which delivers faster data access speeds and better I/O rates. As a result, the cost per I/O operation, when spread over the total capacity of the storage (GB), is lower for all-flash arrays. This efficiency translates into better overall value, especially for workloads that require high I/O throughput1.


It is a common understanding that all-flash arrays, like XtremIO, offer better performance and efficiency compared to spinning disks, which results in a lower cost per I/O per GB1.

The ''Introduction to XtremIO X2 Storage Array'' document from Dell Technologies highlights the efficiency of the storage array, which contributes to reducing the $/GB cost of storage2.

Additional data from industry sources supports the notion that all-flash storage can be more cost-effective in the long run due to operational cost reductions and lower total cost of ownership (TCO) over time1.

Question 10

Which XtremlO X2 hardware component provides a backup power source to save journaling data during an unplanned emergency shutdown?

Correct Answer: C. SuperCap
Explanation:

In the event of an unplanned emergency shutdown, the XtremIO X2 hardware component that provides a backup power source to save journaling data is the SuperCapacitor (SuperCap). The SuperCap is designed to maintain power to the system long enough to ensure that all in-flight writes are committed to non-volatile memory, preserving data integrity. Unlike a battery backup unit (BBU) which may provide power for a longer duration, the SuperCap is specifically designed for short-term power retention to protect data during transient power interruptions1.


The User Guide for XtremIO, which includes power down and power up procedures, would typically detail the role of the SuperCap in emergency shutdown scenarios1.

Additional information on the hardware components and their functions can be found in the Reference Architecture Guide for Dell EMC XtremIO2.

Page: 1 / 6 Total 60 questions