D-XTR-MN-A-24 Practice Exam Questions with Answers Dell XtremIO Maintenance Achievement Certification

In a multi X-Brick XtremIO X1 cluster, the failure of more than half of the COM (communication) cables forces the cluster into a degraded mode. This degraded mode is a protective measure to ensure that the cluster can continue operating with reduced performance and redundancy until the issues with the COM cables are resolved.

The virtual XtremIO Management Server (XMS) OVA file can be found in theTools & Utilitiesdownload section on support.emc.com.This is confirmed by the information provided in the Dell XtremIO Maintenance Achievement document, which details the resources and procedures for maintaining XtremIO products, including the deployment of the XMS1.

Before an XtremIO X1 cluster can start, it is required that the Battery Backup Units (BBUs) are charged to at least 70%. This ensures that there is sufficient power reserve to maintain data integrity and allow for safe shutdown procedures in case of an unexpected power loss.The BBUs provide power to the Storage Processors and other critical components during an outage, allowing them to complete any in-progress operations and commit data to SSDs1.

The startup process checks the BBU charge level and will only proceed if the minimum charge requirement is met. This is a safety feature designed to protect the system and the data it holds.If the BBUs are not adequately charged, the system will not start, preventing potential data loss or corruption that could occur if the system were to lose power without the ability to properly shut down1.

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Questions no:Which document contains the detailed steps for re-imaging the Storage Controller when preparing for a single-to-dual X-Brick expansion?

Verified Answer:C.XtremIO Hardware Installation and Upgrade Guide

Step by Step Comprehensive Detailed Explanation with References:The detailed steps for re-imaging the Storage Controller when preparing for a single-to-dual X-Brick expansion are contained in theXtremIO Hardware Installation and Upgrade Guide.This document provides comprehensive instructions on the physical installation, initial configuration, and upgrade procedures for XtremIO hardware components, including the process of re-imaging the Storage Controller1.

The steps typically include:

Ensuring that all data is backed up before starting the re-imaging process.

Verifying the current system configuration and health status.

Following the specific instructions for re-imaging the Storage Controller as outlined in the guide.

Performing post-re-imaging tasks such as system verification and configuration as necessary.

It is important to follow the guide closely to avoid any potential issues during the expansion process1.

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For an XtremIO cluster to use FTPS (File Transfer Protocol Secure) for the Connect Home feature, the firewall ports that need to be opened are989 and 990.These ports are used for data connections and control connections under implicit security for FTPS1.

When using explicit security, FTPS can also use port 21, but since the question specifies FTPS for Connect Home, which typically uses implicit security, the correct ports are989 for data transmissionand990 for the control connection1. It’s important to ensure these ports are open to allow secure file transfer capabilities for the XtremIO cluster.

A key feature of the XtremIO storage array is inline compression. This feature allows data to be compressed in real-time as it is written to the storage system, which helps to reduce storage footprint and improve storage efficiency without impacting performance.

This performance metric is derived from the system’s ability to deliver linear scalability, meaning that two X-Bricks can deliver twice the IOPS of a single X-Brick configuration2.

The calculation for this is based on the performance of a single X-Brick, which can achieve up to 300,000 IOPS under the same workload conditions.Therefore, with two X-Bricks, the system can achieve double that amount, resulting in 600,000 IOPS1.

This information is crucial for planning and sizing purposes, ensuring that the storage array meets the performance requirements of the applications it supports2.

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The XtremIO X2 storage system can be expanded for capacity (Scale-Up) or both capacity and performance (Scale-Out). The system begins with a single building block, called an X-Brick, with a minimum of 18 SSDs.When additional capacity is required, the system scales up, with up to 72 SSDs for a single X-Brick1. Therefore, to upgrade a single X-Brick XtremIO X2 cluster that already contains 36 SSDs, the minimum number of SSDs required would be 18, which is the base configuration for an X-Brick.

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When comparing XtremIO X1 to XtremIO X2, the amount of memory installed in a Storage Controller with a DAE attached with 400 GB SSDs differs. For the X1, it is 256 GB, while for the X2, it is 512 GB. This increase in memory in the X2 model supports higher performance and improved handling of data operations.

In a single X-Brick XtremIO X2 configuration, the port SC1-IB1 should be connected to IBSW1-P01. This connection ensures proper communication and data flow between the storage controller and the InfiniBand switch, which is critical for system performance and redundancy.

When modifying the IP addresses on an XtremIO X2 cluster that will remain in the same IP network, the appropriate document to reference is the "XtremIO Storage Array User Guide." This guide contains detailed instructions and best practices for changing network configurations, including IP address modifications.