Dell EMC Dell XtremIO Deploy Achievement D-XTR-DY-A-24 Exam Questions

Answer : C

For a four X-Brick XtremIO X1 cluster, the total number of Power Distribution Panels (PDPs) that need to be connected to an electrical source is eight. This is based on the standard configuration for a four X-Brick cluster, which typically includes two power supplies per X-Brick and additional power supplies for the InfiniBand switches and other components1.

The process for connecting PDPs involves:

Identifying Power Requirements: Determine the power requirements for each component of the XtremIO X1 cluster, including X-Bricks and InfiniBand switches.

Allocating PDPs: Allocate the necessary number of PDPs based on the power requirements identified.

Connecting to Electrical Source: Connect each PDP to the electrical source, ensuring that the power distribution is balanced and meets the cluster's needs.

Verifying Power Supply: After connecting, verify that all components are receiving adequate power for operation.

Ensuring Redundancy: Ensure that there is redundancy in the power supply to protect against failures.

Answer : D

When initializing a cluster for the first time with the create-cluster command on an XtremIO X2, the required parameter is the 'package'. This parameter specifies the software package that will be used to create the cluster. It is essential because it determines the version of the operating system and management software that will be installed on the cluster nodes.

The 'package' parameter is part of the command syntax and must be provided for the command to execute successfully. Without specifying the package, the command would not know which software to install, leading to an incomplete or failed initialization process.

Answer : D

To interact with an XtremIO cluster using the REST API, the application that can be used is cURL. cURL is a command-line tool and library for transferring data with URLs and is commonly used for various types of HTTP requests.

The steps to use cURL with the XtremIO REST API are as follows:

Install cURL: Ensure that cURL is installed on your system. It is available for a variety of platforms including Windows, Mac, and Linux.

Prepare the API Request: Formulate your REST API request. This will include the XtremIO cluster's endpoint and the specific API call you wish to make.

Execute the cURL Command: Use the cURL command in your terminal or command prompt to execute the API request. The general syntax for a cURL request is:

curl [options] [URL]

For example, to list all volumes on an XtremIO cluster, you might use:

curl -u username:password -X GET 'https://XMS_IP_Address/api/json/v2/types/volumes'

Replace username:password with your actual credentials and XMS_IP_Address with the IP address of your XtremIO Management Server (XMS).

Analyze the Response: The response from the XtremIO cluster will be output to your terminal. It will typically be in JSON format, which you can then parse and analyze as needed.

Reference Documentation: For detailed information on the REST API calls available and their usage, refer to the official Dell XtremIO Deploy Achievement document1. This document will provide comprehensive guidance on implementing solutions using XtremIO systems, including the use of REST API for cluster interaction.

By following these steps and referring to the official documentation, you can successfully use cURL to interact with an XtremIO cluster via the REST API.

Answer : D

In a fully-populated Data Protection Group (DPG) within an XtremIO X2 array, the system can tolerate up to six disk drives failing sequentially without stopping data services. This is due to the XtremIO X2's ability to maintain operations with double SSD failure protection1. The seventh drive failure would be the point at which the data services are stopped because the system would no longer be able to maintain the required level of redundancy for data protection.

The DPG is designed to handle multiple SSD failures by entering different states of degradation:

Healthy: Double parity protection.

Single Degraded: Single parity protection.

Double Degraded: No parity protection.

Failed: Data Loss.

When the first SSD fails, the system automatically initiates a DPG rebuild to restore double parity protection. If a second SSD fails before the rebuild is complete, the DPG's usable capacity drops by the capacity of one SSD, but it still maintains single parity protection. Only after the failure of a seventh SSD would the DPG enter a failed state, resulting in the cessation of data services2.

Answer : B

The Dell XtremIO Deploy Achievement documents specify different numbers for the maximum volumes in various contexts. However, for the XtremIO Consistency Group, the supported and QA certified number of volumes is 512. This is based on the authoritative information provided in the official release notes and support documents from Dell. It's important to note that while there may be higher numbers mentioned in some technical documents or API responses, such as 60000 or 32000, these are either not recommended or pertain to different aspects of the XtremIO system, not specifically to the Consistency Group1.

Answer : A

In the event of a power failure, the XtremIO X2 system's NVRAM (Non-Volatile Random Access Memory) card will initiate the discharging of the SuperCapacitor (SuperCap). The SuperCap is designed to provide enough power to the NVRAM card to allow it to write any data in transit to a non-volatile storage medium, ensuring data integrity and preventing loss1. This process is a critical part of the XtremIO X2's data protection mechanism during unexpected power interruptions.

Answer : B

Identify the Components: According to the Dell XtremIO Deploy Achievement document, the XtremIO X1 system includes a Storage Controller (SC) and a Battery Backup Unit (BBU)1.

Understand the Configuration: For a single X-Brick cluster, the left power supply in Storage Controller 1 (X1-SC1-PSU-L) should be connected to the corresponding BBU to ensure proper power redundancy and failover capabilities1.

Determine the Correct Connection: The document specifies that each Storage Controller's left power supply connects to Output1 of the BBU within the same X-Brick cluster1.

Verify the Answer: Based on the information provided, the correct power cable Explanation:connection for the left power supply in Storage Controller 1 to the Battery Backup Unit in an XtremIO X1 single X-Brick cluster is to BBU1-Output1, which corresponds to option OB

Verify the Answer: Based on the information provided, the correct power cable Explanation:connection for the left power supply in Storage Controller 1 to the Battery Backup Unit in an XtremIO X1 single X-Brick cluster is to BBU1-Output1, which corresponds to option OB1.