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EMC Certification
D-XTR-DS-A-24 Exam
EMC.D-XTR-DS-A-24.v2025-03-01.q21 Dumps

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Question 1

A customer has a complex virtualized environment and wants to see a topology view from virtual or physical hosts down to the storage array volumes to identify application to storage dependencies.
Which Dell EMC product provides this solution?

A.AppSync
B.XtremIO VAAI plug in
C.ViPR SRM
D.Technician Advisor

Correct Answer: C

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Question 2

Which I/O elevator setting should be selected for use with XtremIO?

A.noop
B.anticipatory
C.deadline
D.cfq

Correct Answer: A

The I/O elevator setting for use with XtremIO should be selected based on the operating system and the workload characteristics. For systems running Red Hat Enterprise Linux (RHEL) and connecting to XtremIO X2 storage arrays, the recommended I/O elevator settings are either noop or deadline.The noop scheduler is often recommended for SSDs and all-flash arrays like XtremIO because it is a simple FIFO queue that does not do any merging or reordering of I/O requests, which is unnecessary for SSDs due to their low latency and high performance1.
References:
* Dell EMC Ready Solutions for Oracle with XtremIO X2 document1.
* Support documentation for XtremIO Family on Dell's official website2.

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Question 3

What is an example of a Decision Support Systems (DSS) workload?

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

Correct Answer: A

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.

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Question 4

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

Correct Answer: A

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.

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Question 5

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

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

Correct Answer: A

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.

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