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

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 : A

When troubleshooting SAN performance problems, a key indicator of a physical issue is a high CRC (Cyclic Redundancy Check) error count. CRC errors are indicative of corrupt data packets during transmission, which often points to issues such as faulty cables, bad ports, or other physical problems in the network infrastructure. High CRC error counts can lead to retransmissions, reduced throughput, and overall degradation of SAN performance. Addressing the physical components associated with high CRC error counts is essential for restoring optimal SAN operations.

While the specific Dell XtremIO Design document was not available, general SAN troubleshooting guidelines and best practices indicate that CRC errors are a critical metric to monitor for physical connectivity issues1.

Additional resources on SAN performance troubleshooting can be found in the support documentation for the XtremIO Family on Dell's official website2.

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Answer : D

When designing an Oracle solution for a customer using XtremIO, it's important to consider the best practices for performance and efficiency.

Option OD, ''Allocate multiple LUNs per host, Use Thin formatting on the ESXi'', is a recommended best practice for Oracle environments12.

Allocating multiple LUNs per host can help distribute the I/O load more evenly across the storage system, which can improve performance1. This is particularly important in Oracle environments, where there can be a high level of concurrent I/O activity1.

Using Thin formatting on the ESXi is also recommended. Thin provisioning is a storage provisioning method that optimizes the efficient use of available space. For a thin virtual disk, ESXi provisions the entire space required for the disk's current and future activities, but the thin disk uses only as much storage space as the disk needs for its initial operations3. If the disk requires more space, it can expand into its entire provisioned space3.

The other options, while they may be part of the overall

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

The Dell EMC XtremIO X2 storage array offers flexible scaling options with building blocks called X-Bricks1. The system can start with a single X-Brick and scale up to 72 SSDs for a single X-Brick1. When additional performance and capacity are required, the system can be expanded by adding additional X-Bricks1.

Among the options provided, VMware is the host OS that supports both 512 bytes and 4 KB XtremIO logical block (LB) volumes23. VMware vSphere 6.7 and later versions support both 512-byte and 4K logical block sizes23. This is because VMware ESXi detects and registers the 4Kn devices and automatically emulates them as 512e3.

The other options, while they may be part of the overall process, are not specifically known to support both 512 bytes and 4 KB XtremIO logical block (LB) volumes:

Linux typically supports multiple file system block sizes of 512, 1024, 2048, and 40964. However, it's not specifically mentioned that it supports both 512 bytes and 4 KB XtremIO logical block volumes5.

IBM AIX also supports multiple file system block sizes of 512, 1024, 2048, and 40966. But again, it's not specifically mentioned that it supports both 512 bytes and 4 KB XtremIO logical block volumes7.

HP-UX does not specifically mention support for both 512 bytes and 4 KB XtremIO logical block volumes89.

Therefore, the verified answer is A. VMware, as it is the host OS that supports both 512 bytes and 4 KB XtremIO logical block (LB) volumes23.