Dell EMC D-XTR-DS-A-24 Dell XtremIO Design Achievement Exam Practice Test

Answer : A

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.

Dell community discussions on Qlogic Fibre Channel adapter settings1.

Knowledgebase articles and documentation on Dell EMC's official website2.

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Answer : A

For a service provider that offers storage and infrastructure hosting and wishes to manage storage, compute, and network elements using a single interface, OpenStack is a suitable software solution. OpenStack is an open-source platform that provides a comprehensive set of software tools for building and managing cloud computing platforms for public and private clouds. OpenStack is designed to control large pools of compute, storage, and networking resources throughout a datacenter, all managed through a dashboard that gives administrators control while empowering their users to provision resources through a web interface1.

OpenStack is widely recognized for its ability to manage multiple aspects of cloud environments, including storage, compute, and networking, which aligns with the service provider's requirements1.

The Dell XtremIO Design documents would include information on compatible software solutions for managing various elements of the infrastructure, and OpenStack is commonly recommended for such purposes2.

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Answer : B

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.

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.

Answer : B

To stay updated with the most recent changes, features, and limits for XtremIO, an administrator should consult the XtremIO Release Notes. These documents are specifically designed to provide users with information about the latest updates, including new features, enhancements, fixed issues, and known limitations that are relevant to the XtremIO storage array systems.

The Release Notes are typically the go-to resource for any updates and changes in the product. They are part of the standard documentation provided by Dell for their products1.

For detailed information on the features and design of XtremIO, the ''Dell XtremIO Design Achievement'' document provides insights into the product features, functionality, use cases, and configurations2.

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Answer : A

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.

Dell EMC Ready Solutions for Oracle with XtremIO X2 document2.

Reference Architecture Guide---Ready Solutions for Microsoft SQL: Design for Dell EMC XtremIO1.

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Answer : D

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 the Inventory List button. 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 specific Cluster Name they 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.

Answer : A

The SCSI DIFF instruction 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 DELTA is not a recognized SCSI command2.

SCSI TRANSFER is not a recognized SCSI command3.

SCSI UPDATE is 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.