Get Dell EMC D-XTR-DS-A-24 Exam Practice Questions - Real and Updated

Answer : B

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.

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 : D

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.

Answer : A

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I/O Elevators refer to the I/O scheduling algorithms used in operating systems to control how I/O operations are submitted to storage12. These algorithms, also known as elevators, determine the order in which I/O requests from different processes or devices are serviced by the underlying hardware, such as hard drives or solid-state drives (SSDs)12. The goal of these algorithms is to improve the efficiency of data access and reduce the time wasted by disk seeks3.

The other options provided are not typically referred to as I/O Elevators:

Option OB, ''The maximum number of consecutive 'sequential' I/Os allowed to be submitted to storage'', refers to a specific parameter of a storage system, not an I/O Elevator4.

Option OC, ''Setting which controls for how long the ESX host attempts to login to the iSCSI target before failing the login'', refers to a specific setting in ESXi host configuration, not an I/O Elevator567.

Option OD, ''The amount of SCSI commands (including I/O requests) that can be handled by a storage device at a given time'', refers to the command handling capacity of a storage device, not an I/O Elevator89.

Therefore, the verified answer is A. I/O scheduling algorithm which controls how I/O operations are submitted to storage, as it accurately describes what I/O Elevators are according to the Dell XtremIO Design Achievement document10 and other sources123.

Answer : C

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.

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.

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