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

Topic	Details
Topic 1	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 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.

EMC Dell XtremIO Design Achievement Sample Questions (Q47-Q52):

NEW QUESTION # 47
What is the recommended execution throttle setting for Windows, Linux, and VMware for Qlogic adapters?

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

Answer: B

Explanation:
The recommended execution throttle setting for Qlogic adapters, when used with Windows, Linux, and VMware, is typically set to the maximum value to allow for the greatest throughput and performance. The execution throttle setting determines the maximum number of outstanding I/O operations that can be queued to the storage controller.For Qlogic Fibre Channel adapters, especially when the HBA speed is 8GBs or over, the execution throttle can be set to 65,5351. This high setting is used to ensure that the storage array can handle a large number of concurrent I/O requests, which is beneficial in environments with high-performance requirements.
References:
* Dell community discussions on Qlogic Fibre Channel adapter settings1.
* Knowledgebase articles and documentation on Dell EMC's official website2.

NEW QUESTION # 48
What is an accurate statement with regards to restoring data to a production volume at a later time using XVC?

A. Restore option is presented only from a read only copy
B. There is no need to unmount a production volume before it can be restored
C. Customer can restore from a read write repurpose copy
D. Restore operation takes longer than snap shot creation time

Answer: B

Explanation:
Using XtremIO Virtual Copies (XVC), data can be restored to a production volume without the need to unmount it first. This feature allows for greater flexibility and efficiency in managing data restoration processes.The XVC technology enables the creation of space-efficient snapshots and copies of volumes that can be used for various purposes, including data restoration1.
References:
* The XtremIO Snapshots (XVC) Inquiries on Dell Technologies Community Forum provides insights into the capabilities of XVC, including the ability to restore data without unmounting the production volume1.
* Additional information on the functionality and usage of XVC can be found in the XtremIO Host Configuration Guide2.

NEW QUESTION # 49
You need to design a VDI solution for a customer. Which recommended best practices should be used for VDI environments?

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

Answer: A

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 # 50
Which XtremlO X2 hardware component provides a backup power source to save journaling data during an unplanned emergency shutdown?

A. NVRAM
B. PSU
C. BBU
D. SuperCap

Answer: D

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.
References:
* 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.

NEW QUESTION # 51
Which SCSI instructions are used to build a bitmap of the changes between the first snapshot and subsequent snapshots when RecoverPoint is used with XtremIO?

A. SCSI DELTA
B. SCSI TRANSFER
C. SCSI UPDATE
D. SCSI DIFF

Answer: D

Explanation:
TheSCSI DIFFinstruction is used to build a bitmap of the changes between the first snapshot and subsequent snapshots when RecoverPoint is used with XtremIO1.
The DIFF protocol is a vendor-specific SCSI command which RecoverPoint uses to query XtremIO in order to obtain a bitmap of changes between two snapshot sets1.RecoverPoint uses the output of the DIFF command to read the actual data and transfer it to the target side1.
The other options provided are not typically used for this purpose:
* SCSI DELTAis not a recognized SCSI command2.
* SCSI TRANSFERis not a recognized SCSI command3.
* SCSI UPDATEis not a recognized SCSI command4.
Therefore, the verified answer is A.SCSI DIFF, as it is the SCSI instruction used to build a bitmap of the changes between the first snapshot and subsequent snapshots when RecoverPoint is used with XtremIO1.

NEW QUESTION # 52
......

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NEW D-XTR-DS-A-24 TEST VCE FREE | TEST D-XTR-DS-A-24 CRAM REVIEW

New D-XTR-DS-A-24 Test Vce Free | Test D-XTR-DS-A-24 Cram Review