D-XTR-DS-A-24 Braindumps PDF, EMC D-XTR-DS-A-24 Exam Cram
New 2025 D-XTR-DS-A-24 Sample Questions Reliable D-XTR-DS-A-24 Test Engine
NEW QUESTION # 18
A customer has purchased an XtremlO X2-R, four X-Brick cluster. How many ports are available on a single InfiniBand Switch?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
In a Dell XtremIO X2-R system, a four X-Brick cluster configuration includes two InfiniBand Switches1.
Each InfiniBand Switch in a multi X-Brick system, such as the X2-R, is included to interconnect the X-Bricks within the cluster. While the specific number of ports is not directly stated in the search results, the configuration implies a high number of ports to support the connectivity between multiple X-Bricks. Based on the available information and typical configurations of such systems, it is reasonable to infer that each InfiniBand Switch would have 36 ports to provide the necessary interconnectivity for a four X-Brick cluster.
References:
* The XtremIO X2 Specifications document provides details on system configurations and components, including InfiniBand Switches1.
* Additional information on InfiniBand Switches and their role in multi X-Brick systems can be found in the XtremIO X2 Specification Sheet2.
NEW QUESTION # 19
What is an accurate statement about XtremIO XVC refresh operations?
- A. O/S side device scan is not required
- B. Refreshed volume cannot be resized
- C. Only snapshot-to-production refresh is supported
- D. Unmount of a production volume is not required
Answer: D
Explanation:
XtremIO XVC (XtremIO Virtual Copies) allows for efficient snapshot management and operations, including the refresh of volumes. One of the key features of XVC is that it enables the refresh of a production volume from a snapshot without requiring the volume to be unmounted from the host. This capability is designed to minimize disruption and maintain continuous availability of data to applications during refresh operations.The refresh operation is handled within the XtremIO storage array, and the production volume remains accessible to the host during this process1.
References:
* The Dell XtremIO Design Achievement document provides information on the capabilities and features of XtremIO X2 systems, including XVC operations1.
* Additional details on XVC refresh operations can be found in the support documentation for the XtremIO Family on Dell's official website2.
NEW QUESTION # 20
Which performance capture technology helps to evaluate cloud candidacy?
- A. Dossier
- B. Technician Advisor
- C. Unisphere
- D. Live Optics
Answer: D
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.
References:
* 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.
NEW QUESTION # 21
What is the recommended execution throttle setting for Windows, Linux, and VMware for Qlogic adapters?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
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 # 22
A customer's environment is configured as follows:
. Dual X-Brick cluster
. 8 ESXi hosts with 2 Emulex HBAs
. Each ESXi hosts has 8 LUNs
. Each LUN is visible through 4 paths
What should be the LUN queue depth setting per path?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
The LUN queue depth setting per path in a customer's environment configured with a dual X-Brick cluster, 8 ESXi hosts with 2 Emulex HBAs, each ESXi host having 8 LUNs, and each LUN visible through 4 paths, should be set to1281.
This is based on the best practice recommendation for Emulex HBAs in an XtremIO environment, as mentioned in the Dell Community1.The LUN queue depth on the Emulex HBA should be set to
1281.However, this setting might need to be adjusted based on the specific storage environment and the other storage arrays that are being used12.
NEW QUESTION # 23
What is the fingerprint bit size created by the algorithm used by XtremIO?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
The Dell XtremIO X2 Storage Array uses an inline data deduplication process which involves fingerprinting data blocks. The fingerprinting process is a part of the data reduction technique that helps in identifying duplicate data blocks. When data enters the system, it is divided into small chunks, and each chunk is fingerprinted using a hashing algorithm. The size of the fingerprint is crucial as it determines the efficiency and accuracy of the deduplication process.
The specific bit size of the fingerprint created by the algorithm used by XtremIO is256 bits.This information is derived from the detailed descriptions of the system's architecture and operation as provided in the Dell EMC XtremIO X2 Storage Array documentation1. The document outlines the system features, including inline data reduction techniques like deduplication and compression, which are essential components of XtremIO's data management capabilities.
The 256-bit fingerprint size ensures a balance between deduplication efficiency and the probability of hash collisions (where different data blocks could result in the same fingerprint). A larger fingerprint size would reduce the chance of collisions but would require more storage space for metadata, while a smaller size would save metadata space but increase the risk of collisions. Therefore, the 256-bit size is a strategic choice for the XtremIO system's deduplication process.
In summary, the fingerprint bit size for XtremIO's deduplication algorithm is 256 bits, which is designed to optimize the system's performance and data reduction capabilities while maintaining data integrity.
NEW QUESTION # 24
What should the I/O size be set to in a VMware VDI solution utilizing VAAI XCOPY on XtremIO?
- A. 256 kB
- B. 256 MB
- C. 16 kB
- D. 4 MB
Answer: A
Explanation:
In a VMware VDI solution utilizing VAAI XCOPY on XtremIO, the I/O size should be set to 256 kB.This setting is recommended to optimize the performance of the storage array during XCOPY operations, which are used to offload the copying of data within the storage array to the array itself, freeing up host resources1.
References:
* The Dell support knowledge base article on using a VAAI claim rule to set the XCOPY size when using XtremIO for ESXi hosts recommends setting the XCOPY system value to 256 kB for XtremIO arrays1.
* Additional information on VAAI XCOPY and its configuration can be found in the "Introduction to XtremIO X2 Storage Array" document, which provides insights into the system features that support such operations2.
NEW QUESTION # 25
On an XtremlO cluster that is encrypted, where is the encryption key generated?
- A. AK
- B. MEK
- C. SED
- D. WebUl
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 # 26
Which X-Brick cluster topology is exclusive to XtremIO X2?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
XtremIO X2 supports configurations starting from a single X-Brick and scaling up to multiple X-Bricks.
However, the X2 system can support up to 8 X-Bricks in a cluster, not just 4, so option D is more correct.
NEW QUESTION # 27
A customer is adding a new volume to their XtremlO environment using the RESTful API. When attempting to create the volume, a response code of 400 is returned. What is the cause of this response code?
- A. RESTful API command timed out
- B. RESTful API command is not authorized
- C. RESTful API command contains a syntax error
- D. RESTful API command encountered an internal error
Answer: C
Explanation:
A response code of 400 in the context of RESTful API operations generally indicates that the request made by the client was malformed or contains a syntax error. This means that the data stream sent by the client to the server did not follow the rules as defined by the API specification.It could be due to various reasons such as incorrect request format, missing required parameters, or invalid parameter values1.
In the case of the Dell XtremIO environment, if a customer receives a 400 response code when attempting to create a volume via the RESTful API, it is likely due to a syntax error in the API command.The customer should review the API request to ensure that it conforms to the expected format and includes all necessary information as per the XtremIO API documentation2.
References:
* Community discussions on the Dell Technologies website where similar issues have been addressed and the cause of the 400 error was identified as a syntax error in the RESTful API command2.
* General information about the meaning of a 400 Bad Request error in REST APIs, which supports the
* conclusion that a syntax error is the cause1.
NEW QUESTION # 28
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: D
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 # 29 
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. 3 and 4
- C. 2 and 3
- D. 1,2, 3, and 4
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 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 # 30
What should the Oracle Redo Log block size be set to in order to prevent log entries from being misaligned by read-modify-write operations for an Oracle database?
- A. 24 kB
- B. 4 kB
- C. 8 kB
- D. 16 kB
Answer: C
Explanation:
The Oracle Redo Log block size is recommended to be set to 8 kB.This is based on the best practices for Oracle 19c Database, where it was found that increasing the size of the Oracle redo logs can improve database performance12. However, it's important to note that not every workload will show significant performance increase when increasing the size of the redo logs. Customers should evaluate the AWR to determine if the redo logs have an associated high number and duration of wait times.If the redo logs show a possible bottleneck, then increasing the size of the redo logs could improve performance2.
NEW QUESTION # 31
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 the same as spinning disk
- D. Cost per GB is lower than spinning disk
Answer: B
NEW QUESTION # 32
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 operation takes longer than snap shot creation time
- D. Restore option is presented only from a read only copy
Answer: A
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 # 33
How would a storage administrator navigate to different XtremIO clusters from the WebUl if the administrator has more than one cluster managed by the same XMS?
- A. Click the Inventory List button on the Navigation Menu
- B. Click the Administration tab and locate the Cluster Name
- C. Click on System Settings icon on the top Menu bar
- D. Click the Cluster Name on the Status bar at the bottom of the screen
Answer: A
Explanation:
In a multi-cluster environment managed by the same XtremIO Management Server (XMS), a storage administrator can navigate between different XtremIO clusters using the WebUI through the Inventory List.
The Inventory List provides a centralized view of all the clusters and allows administrators to select and manage them individually.
The process for navigating to different clusters is as follows:
* Log into the XtremIO WebUI using the appropriate credentials.
* Once logged in, locate the Navigation Menu on the left side of the WebUI interface.
* In the Navigation Menu, find and click on theInventory Listbutton. This action will display a list of all the XtremIO clusters that are currently managed by the XMS.
* From the list, the administrator can click on the specificCluster Namethey wish to manage. This will bring up the detailed view and management options for that selected cluster.
This information is consistent with the best practices for managing XtremIO X2 storage systems as outlined in the Dell EMC documentation and support articles related to XtremIO management1. The Inventory List is a key feature in the WebUI that simplifies the management of multiple clusters, providing a straightforward method for administrators to switch between clusters without having to navigate through multiple settings or tabs.
In summary, to navigate between different XtremIO clusters managed by the same XMS in the WebUI, the storage administrator should use the Inventory List button on the Navigation Menu.
NEW QUESTION # 34
You have been requested to connect to the TECH port of a physical XtremIO X2 XMS by Global Technical Support. Which port should the service machine be connected to onthe server?
- A. USB-TOP
- B. USB-MIDDLE
- C. USB-BOTTOM
- D. MGMT ETHO
Answer: D
Explanation:
When Global Technical Support requests a connection to the TECH port of a physical XtremIO X2 XMS, the service machine should be connected to the MGMT ETH0 port on the server. This port is typically used for management purposes and allows for the necessary communication between the service machine and the XtremIO X2 XMS for technical operations and support.
References:
* The Dell EMC support document outlines issues related to the management network configuration failure and mentions the physical XMS management port, which is relevant to the TECH port connection1.
* Additional information on the XtremIO X2 system operation and management can be found in the
"Introduction to XtremIO X2 Storage Array" document, which includes details on the XtremIO Management Server (XMS) and its ports2.
NEW QUESTION # 35
A customer has a workload with the following attributes:
. Generates 500,000 IOPs
. Maximum bandwidth of 14 GB/s
Which XtremlO X2 solution should be recommended to the customer?
- A. 4 X-Bricks
- B. 2 X-Bricks
- C. 3 X-Bricks
- D. 1 X-Brick
Answer: A
Explanation:
To accommodate a workload that generates 500,000 IOPS with a maximum bandwidth of 14 GB/s, the recommended XtremIO X2 solution would be 4 X-Bricks.This recommendation is based on the specifications that a fully populated X-Brick module with 72 flash drives supports 220,000 IOPS1. Therefore, to support
500,000 IOPS, more than two X-Bricks are required. Additionally, the bandwidth requirement of 14 GB/s must be considered, and typically, more X-Bricks can provide higher bandwidth capabilities.
References:
* Dell EMC Ready Solutions for Oracle with XtremIO X2 document2.
* Reference Architecture Guide-Ready Solutions for Microsoft SQL: Design for Dell EMC XtremIO1.
NEW QUESTION # 36
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