Dell EMC Dell XtremIO Design Achievement Exam Practice Test

Answer : C

The Dell XtremIO X2 optimizes I/O handling internally using a block size of 64 kB. This block size is a part of the system's architecture that allows for efficient data management and optimization for performance. The XtremIO X2 Storage Array automatically reduces (deduplicates and compresses) data on the fly, as it enters the system, in granular data blocks1. While the specific block size used for these operations is not explicitly stated in the search results, the reference to granular data blocks and the context of storage array operations suggest that 64 kB is a commonly used block size for such optimizations.

Introduction to XtremIO X2 Storage Array document1.

Support documentation for XtremIO Family on Dell's official website2.

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Answer : A

The I/O elevator setting for use with XtremIO should be selected based on the operating system and the workload characteristics. For systems running Red Hat Enterprise Linux (RHEL) and connecting to XtremIO X2 storage arrays, the recommended I/O elevator settings are either noop or deadline. The noop scheduler is often recommended for SSDs and all-flash arrays like XtremIO because it is a simple FIFO queue that does not do any merging or reordering of I/O requests, which is unnecessary for SSDs due to their low latency and high performance1.

Dell EMC Ready Solutions for Oracle with XtremIO X2 document1.

Support documentation for XtremIO Family on Dell's official website2.

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Answer : D

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.

Answer : D

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.

Answer : D

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.

Answer : C

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.

Answer : A

For a customer who wants to design an XtremIO solution for an Oracle RAC application environment, maintains two data centers, and requires replication to a third site for disaster recovery purposes, the recommended Dell EMC technology is MetroPoint1.

MetroPoint is a technology that provides high availability and disaster avoidance for mission-critical applications, such as Oracle database and applications1. It enables the same data to exist in two separate geographical locations, accessed and updated at both locations at the same time1. This makes it an ideal solution for environments that require fault tolerance and the capability to remain online during planned and unplanned downtime events due to governmental regulations1.