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Dell D-XTR-DS-A-24 Exam (page: 1)
Dell XtremIO Design Achievement
Updated on: 12-Feb-2026

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D-XTR-DS-A-24 PDF 60 Questions

A customer's environment is expected to grow significantly (more than 150 TB physical capacity) over the next year.
Which solution should be recommended?

  1. Start with X2-R cluster and add additional X2-R X-Bricks as needed
  2. Start with a four X-Brick X2-S cluster and add additional X2-S X-Bricks as needed
  3. Start with X2-R cluster and add additional X2-S X-Bricks as needed
  4. Start with X2-S cluster and add additional X2-S X-Bricks as needed

Answer(s): A

Explanation:

For environments expected to grow significantly (more than 150 TB physical capacity), it is better to start with an X2-R cluster and add additional X2-R X-Bricks as needed. X2-R configurations are designed for a variety of use cases and can handle larger capacities and high-performance requirements.



Which software package is required for Fast I/O Failure for the AIX operating system?

  1. ODM
  2. PowerPath
  3. MPIO
  4. LVM

Answer(s): C

Explanation:

MPIO (MultiPath I/O) is required for Fast I/O Failure for the AIX operating system as it helps in managing multiple paths for redundancy and failover.



Which performance monitoring utility can be used for data gathering on Windows?

  1. sar
  2. PerfMon
  3. iostat
  4. resxtop

Answer(s): B

Explanation:

The Performance Monitor (PerfMon) is a built-in tool in Windows that allows users to monitor and analyze the performance of their system in real time123456. It provides a visual display of built-in Windows performance counters, either in real time or as a way to review historical data7. You can add performance counters to Performance Monitor by dragging and dropping, or by creating custom Data



What is the recommended action during the Fill phase of the PoC Toolkit?

  1. Create LUNs equaling 90% of the capacity of the array
  2. Completely overwrite the LUNs at least twice
  3. Use multiple I/O size and read/write ratio workloads
  4. Scatter writes across entire storage system

Answer(s): D

Explanation:

The Fill phase in the PoC Toolkit should involve scattering writes across the entire storage system to simulate ordinary use and to ensure that the array is adequately prepared for the real-world workload.



Which X-Brick cluster topology is exclusive to XtremIO X2?

  1. 4
  2. 3
  3. 2
  4. 1

Answer(s): D

Explanation:

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.



A customer has a large ESXi server environment they are considering deploying to XtremlO for a VDI implementation. To determine a baseline of the environment, you are proceeding with documenting each server's CPU, NIC, and disk utilization statistics. The customer has provided you with direct CLI access to the servers to conduct this assessment.

Which utility should be used to monitor these performance parameters?

  1. iostat
  2. resxtop
  3. top
  4. esxtop

Answer(s): D



You need to design a VDI solution for a customer.
Which recommended best practices should be used for VDI environments?

  1. Align data on 8 kB boundariesPut all VDI-related data on one large LUN
  2. Align data on 4 kB boundariesAllocate multiple XtremIO LUNs to each host
  3. Align data on 4 kB boundariesPut persona and user data on XtremIO LUNs
  4. Align data on 8 kB boundariesPut the master VM image on an XtremIO LUN

Answer(s): B

Explanation:

When designing a Virtual Desktop Infrastructure (VDI) solution, it's important to consider the best practices for performance and efficiency.

Option OB, "Align data on 4 kB boundariesAllocate multiple XtremIO LUNs to each host", is a recommended best practice for VDI environments12. This is because aligning data on 4 kB boundaries can help to optimize the performance of the storage system12. The XtremIO storage array uses a 4 kB data block size, so aligning data on 4 kB boundaries can help to ensure that data is efficiently stored and retrieved12.

Allocating multiple XtremIO LUNs to each host can also help to distribute the I/O load more evenly across the storage system, which can improve performance12. This is particularly important in VDI environments, where there can be a high level of concurrent I/O activity12.

The other options, while they may be part of the overall process, are not specifically recommended for VDI environments:

Option OA, "Align data on 8 kB boundariesPut all VDI-related data on one large LUN", is not recommended because aligning data on 8 kB boundaries does not match the 4 kB data block size used by the XtremIO storage array12. Also, putting all VDI-related data on one large LUN can lead to performance issues due to the high level of concurrent I/O activity in VDI environments12.

Option OC, "Align data on 4 kB boundariesPut persona and user data on XtremIO LUNs", is not recommended because persona and user data typically do not require the high performance provided by XtremIO LUNs12.

Option OD, "Align data on 8 kB boundariesPut the master VM image on an XtremIO LUN", is not recommended because aligning data on 8 kB boundaries does not match the 4 kB data block size used by the XtremIO storage array12.

Therefore, the verified answer is B. Align data on 4 kB boundariesAllocate multiple XtremIO LUNs to each host, as it provides the most suitable solution for VDI environments according to the Dell XtremIO Design Achievement document12.



You need to design an Oracle solution for a customer.
Which XtremlO best practices should be used in

Oracle environments?

  1. Use consistent LUN numbers on each clustered host
    Use a 512 byte LUN sector size for databases
  2. Use unique LUN numbers on each clustered host
    Use a 4 kB LUN sector size for databases
  3. Allocate one large LUN per host
    Use Eager Zeroed Thick formatting on ESXi
  4. Allocate multiple LUNs per host
    Use Thin formatting on the ESXi

Answer(s): D

Explanation:

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



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