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DELL D-XTR-DS-A-24 Practice Test - Questions Answers

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Question 1

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What is true about the Solaris specific configuration settings?

Disable flow control
Disable flow control
Increase the Maximum I/O Size parameter
Increase the Maximum I/O Size parameter
Enable flow control
Enable flow control
Decrease the Maximum I/O Size parameter
Decrease the Maximum I/O Size parameter
Suggested answer: C
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.

asked 16/09/2024
Nour Algharbi
47 questions

Question 2

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XtremlO encrypts data that is stored on which drive?

Storage Controller and DAE
Storage Controller and DAE
Storage Controller only
Storage Controller only
Physical XMS, Storage Controller, and DAE
Physical XMS, Storage Controller, and DAE
DAE only
DAE only
Suggested answer: D
Explanation:

The Dell EMC XtremIO X2 Storage Array uses Data at Rest Encryption (D@RE) to encrypt data. This encryption occurs on the Self Encrypting Drives (SEDs) within the Data Availability Enclosures (DAE). The DAEs house the physical drives where the actual data is stored and encrypted1.

Introduction to Dell EMC XtremIO X2 Storage Array document2.

Dell EMC XtremIO v6.3 document1.

asked 16/09/2024
John Eestermans
36 questions

Question 3

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Refer to the exhibit.

DELL D-XTR-DS-A-24 image Question 3 22730 09162024193742000000

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?

3 and 4
3 and 4
2 and 3
2 and 3
1 and 2
1 and 2
1,2, 3, and 4
1,2, 3, and 4
Suggested answer: D
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 such connections, assuming the ports are configured for Fibre Channel traffic and the infrastructure supports it.

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.

asked 16/09/2024
Christian Gyssels
48 questions

Question 4

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A customer wants to consolidate management of their XtremlO environment to as few XMS machines as possible. The customer's XtremlO environment consists of the following:

. Two XtremIO clusters running XIOS 4.0.2-80

. Two XtremlO clusters running XIOS 4.0.4-41

. Two XtremIO clusters running XIOS 4.0.25-27

. Two XtremIO X2 clusters running XIOS 6.0.1-27_X2

What is the minimum number of XMS machines required to complete the consolidation effort?

2
2
4
4
3
3
1
1
Suggested answer: D
Explanation:

To consolidate the management of an XtremIO environment, the minimum number of XtremIO Management Server (XMS) machines required depends on the compatibility of the XMS with the various XtremIO Operating System (XIOS) versions present in the environment. A single XMS can manage multiple clusters as long as the XIOS versions are within the same major release family or are compatible with the XMS version.

Given the XIOS versions listed:

Two clusters running XIOS 4.0.2-80

Two clusters running XIOS 4.0.4-41

Two clusters running XIOS 4.0.25-27

Two XtremIO X2 clusters running XIOS 6.0.1-27_X2

All the clusters running XIOS version 4.x can be managed by a single XMS because they belong to the same major release family. The XtremIO X2 clusters running XIOS 6.0.1-27_X2 would typically require a separate XMS that supports the 6.x family. However, it is possible for a single XMS to manage both 4.x and 6.x clusters if the XMS version is compatible with both, which is often the case with newer XMS versions that support a wider range of XIOS versions.

Therefore, the minimum number of XMS machines required to manage all the listed clusters, assuming compatibility, is one.

Dell community discussions on vXMS version compatibility1.

Introduction to XtremIO X2 Storage Array document, which may include details on XMS and XIOS compatibility2.

XtremIO Bulletin Volume I-A 2022 for XIOS and XMS version guidelines3.

asked 16/09/2024
Jeffrey Ding
36 questions

Question 5

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A customer's environment is expected to grow significantly (more than 150 TB physical capacity) over the next year. Which solution should be recommended?

Start with X2-R cluster and add additional X2-R X-Bricks as needed
Start with X2-R cluster and add additional X2-R X-Bricks as needed
Start with a four X-Brick X2-S cluster and add additional X2-S X-Bricks as needed
Start with a four X-Brick X2-S cluster and add additional X2-S X-Bricks as needed
Start with X2-R cluster and add additional X2-S X-Bricks as needed
Start with X2-R cluster and add additional X2-S X-Bricks as needed
Start with X2-S cluster and add additional X2-S X-Bricks as needed
Start with X2-S cluster and add additional X2-S X-Bricks as needed
Suggested answer: A
Explanation:

For environments expected to grow significantly (more than 150 TB physical capacity), it is better to start with an X2-R cluster and add additional X2-R X-Bricks as needed. X2-R configurations are designed for a variety of use cases and can handle larger capacities and high-performance requirements.

asked 16/09/2024
Matthew Farrington
40 questions

Question 6

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Which software package is required for Fast I/O Failure for the AIX operating system?

ODM
ODM
PowerPath
PowerPath
MPIO
MPIO
LVM
LVM
Suggested answer: C
Explanation:

MPIO (MultiPath I/O) is required for Fast I/O Failure for the AIX operating system as it helps in managing multiple paths for redundancy and failover.

asked 16/09/2024
Quintin van Rooyen
52 questions

Question 7

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

sar
sar
PerfMon
PerfMon
iostat
iostat
resxtop
resxtop
Suggested answer: B
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

asked 16/09/2024
Maureen Lande
49 questions

Question 8

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You need to design an Oracle solution for a customer. Which XtremlO best practices should be used in Oracle environments?

Use consistent LUN numbers on each clustered host Use a 512 byte LUN sector size for databases
Use consistent LUN numbers on each clustered host Use a 512 byte LUN sector size for databases
Use unique LUN numbers on each clustered host Use a 4 kB LUN sector size for databases
Use unique LUN numbers on each clustered host Use a 4 kB LUN sector size for databases
Allocate one large LUN per host Use Eager Zeroed Thick formatting on ESXi
Allocate one large LUN per host Use Eager Zeroed Thick formatting on ESXi
Allocate multiple LUNs per host Use Thin formatting on the ESXi
Allocate multiple LUNs per host Use Thin formatting on the ESXi
Suggested answer: D
Explanation:

When designing an Oracle solution for a customer using XtremIO, it's important to consider the best practices for performance and efficiency.

Option OD, ''Allocate multiple LUNs per host, Use Thin formatting on the ESXi'', is a recommended best practice for Oracle environments12.

Allocating multiple LUNs per host can help distribute the I/O load more evenly across the storage system, which can improve performance1. This is particularly important in Oracle environments, where there can be a high level of concurrent I/O activity1.

Using Thin formatting on the ESXi is also recommended. Thin provisioning is a storage provisioning method that optimizes the efficient use of available space. For a thin virtual disk, ESXi provisions the entire space required for the disk's current and future activities, but the thin disk uses only as much storage space as the disk needs for its initial operations3. If the disk requires more space, it can expand into its entire provisioned space3.

The other options, while they may be part of the overall

asked 16/09/2024
S Tharakanparampil
44 questions

Question 9

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Which host OS supports both 512 bytes and 4 KB XtremIO logical block (LB) volumes?

VMware
VMware
Linux
Linux
IBM AIX
IBM AIX
HP-UX
HP-UX
Suggested answer: A
Explanation:

The Dell EMC XtremIO X2 storage array offers flexible scaling options with building blocks called X-Bricks1. The system can start with a single X-Brick and scale up to 72 SSDs for a single X-Brick1. When additional performance and capacity are required, the system can be expanded by adding additional X-Bricks1.

Among the options provided, VMware is the host OS that supports both 512 bytes and 4 KB XtremIO logical block (LB) volumes23. VMware vSphere 6.7 and later versions support both 512-byte and 4K logical block sizes23. This is because VMware ESXi detects and registers the 4Kn devices and automatically emulates them as 512e3.

The other options, while they may be part of the overall process, are not specifically known to support both 512 bytes and 4 KB XtremIO logical block (LB) volumes:

Linux typically supports multiple file system block sizes of 512, 1024, 2048, and 40964. However, it's not specifically mentioned that it supports both 512 bytes and 4 KB XtremIO logical block volumes5.

IBM AIX also supports multiple file system block sizes of 512, 1024, 2048, and 40966. But again, it's not specifically mentioned that it supports both 512 bytes and 4 KB XtremIO logical block volumes7.

HP-UX does not specifically mention support for both 512 bytes and 4 KB XtremIO logical block volumes89.

Therefore, the verified answer is A. VMware, as it is the host OS that supports both 512 bytes and 4 KB XtremIO logical block (LB) volumes23.

asked 16/09/2024
Jim McKay
41 questions

Question 10

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What are the I/O Elevators?

1/O scheduling algorithm which controls how I/O operations are submitted to storage.
1/O scheduling algorithm which controls how I/O operations are submitted to storage.
The maximum number of consecutive 'sequential' I/Os allowed to be submitted to storage.
The maximum number of consecutive 'sequential' I/Os allowed to be submitted to storage.
Setting which controls for how long the ESX host attempts to login to the iSCSI target before failing the login.
Setting which controls for how long the ESX host attempts to login to the iSCSI target before failing the login.
The amount of SCSI commands (including I/O requests) that can be handled by a storage device at a given time.
The amount of SCSI commands (including I/O requests) that can be handled by a storage device at a given time.
Suggested answer: A
Explanation:

Explore

I/O Elevators refer to the I/O scheduling algorithms used in operating systems to control how I/O operations are submitted to storage12. These algorithms, also known as elevators, determine the order in which I/O requests from different processes or devices are serviced by the underlying hardware, such as hard drives or solid-state drives (SSDs)12. The goal of these algorithms is to improve the efficiency of data access and reduce the time wasted by disk seeks3.

The other options provided are not typically referred to as I/O Elevators:

Option OB, ''The maximum number of consecutive 'sequential' I/Os allowed to be submitted to storage'', refers to a specific parameter of a storage system, not an I/O Elevator4.

Option OC, ''Setting which controls for how long the ESX host attempts to login to the iSCSI target before failing the login'', refers to a specific setting in ESXi host configuration, not an I/O Elevator567.

Option OD, ''The amount of SCSI commands (including I/O requests) that can be handled by a storage device at a given time'', refers to the command handling capacity of a storage device, not an I/O Elevator89.

Therefore, the verified answer is A. I/O scheduling algorithm which controls how I/O operations are submitted to storage, as it accurately describes what I/O Elevators are according to the Dell XtremIO Design Achievement document10 and other sources123.

asked 16/09/2024
Patricia Vontitte
42 questions
Total 60 questions
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