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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	XtremIO X2 Data Replication: For data protection specialists and storage administrators, this section focuses on data replication operations and management within XtremIO X2 systems. It covers XtremIO X2 snapshot creation and management for data backup and recovery. The section also explains RecoverPoint operations for local and remote replication with XtremIO X2, offering comprehensive data protection and disaster recovery solutions.
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.

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EMC Dell XtremIO Design Achievement Sample Questions (Q36-Q41):

NEW QUESTION # 36

A customer wants to connect their Storage Controllers to Fibre Channel switches using as many Fibre Channel ports as possible. Which ports of each Storage Controller shown in the exhibit should be used?

A. 1 and 2
B. 1,2, 3, and 4
C. 2 and 3
D. 3 and 4

Answer: B

Explanation:
To maximize the connectivity between Storage Controllers and Fibre Channel switches, all available ports should be utilized. This ensures redundancy and maximizes throughput. The exhibit provided shows a Storage Controller with four ports labeled 1, 2, 3, and 4. Without specific design documents, the general best practice is to use all available ports for suchconnections, assuming the ports are configured for Fibre Channel traffic and the infrastructure supports it.
References:
* General best practices for Fibre Channel connectivity and port usage are discussed in various Dell EMC documents, such as the "Introduction to XtremIO X2 Storage Array" and "Configuring Fibre Channel Storage Arrays" documents12.
* Specific port configurations and their usage would be detailed in the Dell XtremIO Design documents, which would provide definitive guidance on which ports to use for connecting to Fibre Channel switches.

NEW QUESTION # 37
You are connecting a Linux host to an XtremlO array. The host will be connected to the array using the QLogic HBA's. Based on the recommended best practice, what is the value for the queue depth?

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

Answer: B

Explanation:
When connecting a Linux host to an XtremIO array using QLogic HBAs, the recommended best practice for the queue depth value is 256.This setting ensures that the XtremIO X2 storage arrays handle an optimal number of SCSI commands, including I/O requests, which is crucial for maintaining high performance and efficient data processing1.
References:
* The Dell EMC Ready Solutions for Oracle with XtremIO X2 document specifies the LUN queue depth to the recommended value of 256 for the QLogic HBAs used in their virtualized databases server1.
* Additional discussions on HBA Queue Depth and host settings for environments utilizing XtremIO can be found in the Dell Community forums2.

NEW QUESTION # 38
On an XtremlO cluster that is encrypted, where is the encryption key generated?

A. WebUl
B. AK
C. SED
D. MEK

Answer: C

Explanation:
In an XtremIO cluster that is encrypted, the encryption key is generated within the Self-Encrypting Drives (SEDs). The SEDs are responsible for encrypting and decrypting the data at rest without any performance overhead. The encryption process is transparent to the user and is managed within the drive itself. The keys are generated and stored securely within the SEDs to ensure that data cannot be accessed without proper authorization.
References:
* Dell EMC Data Domain Encryption - Frequently Asked Questions1.
* Policy Files and Default Encryption Keys in Dell Encryption2.

NEW QUESTION # 39
What is true about the Solaris specific configuration settings?

A. Decrease the Maximum I/O Size parameter
B. Enable flow control
C. Increase the Maximum I/O Size parameter
D. Disable flow control

Answer: B

Explanation:
In the context of Dell XtremIO storage arrays and their interaction with host systems such as Solaris, flow control is a network feature that manages data transmission and helps prevent packet loss when network congestion occurs. Enabling flow control on Solaris when it's connected to XtremIO arrays can be crucial for maintaining data integrity and ensuring smooth communication between the host and the storage system.
The Dell EMC Host Connectivity Guide for Oracle Solaris provides detailed instructions and best practices for configuring Solaris systems that are connected to Dell EMC storage arrays, including XtremIO1. While the document does not explicitly mention the setting to "enable flow control," it is generally recommended to enable flow control in enterprise environments to manage data flow effectively and to prevent data loss or corruption during peak loads or network issues.
Enabling flow control can help in managing the pace at which data packets are sent, allowing the receiving device to handle the incoming data without being overwhelmed. This is particularly important in high-performance environments where XtremIO arrays are used, as they often handle large volumes of data transfers.
In summary, enabling flow control is a recommended practice for Solaris specific configurations when interfacing with Dell XtremIO storage arrays to ensure data transfer reliability and system stability.

NEW QUESTION # 40
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 lower than spinning disk
D. Cost per GB is the same as spinning disk

Answer: B

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.
References:
* 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.

NEW QUESTION # 41
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