FEATURES OF EMC D-VPX-OE-A-24 DUMPS PDF FORMAT

Features of EMC D-VPX-OE-A-24 Dumps PDF Format

Features of EMC D-VPX-OE-A-24 Dumps PDF Format

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Quiz 2025 EMC D-VPX-OE-A-24: Dell VPLEX Operate Achievement – Efficient Sure Pass

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EMC Dell VPLEX Operate Achievement Sample Questions (Q29-Q34):

NEW QUESTION # 29
Using the Storage Volume expansion method for virtual volumes built on RAID-1 or distributed RAID-1 devices, what is the maximum number of initialization processes that can run concurrently, per cluster?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: B


NEW QUESTION # 30
What happens to global cache size if a director fails and is removed from the cluster?

  • A. Suspends
  • B. Decreases
  • C. Increases
  • D. Remains as-is

Answer: B

Explanation:
When a director fails and is removed from a VPLEX cluster, the global cache size decreases. This is because each director contributes to the total global cache available in the VPLEX cluster. Here's the explanation:
* Global Cache: The global cache in a VPLEX system is a shared resource that is used by all directors in the cluster to cache data for improved performance1.
* Director Contribution: Each director within the VPLEX cluster has its own local cache, which collectively forms the global cache.When a director is operational, its cache is part of the global cache pool1.
* Director Failure: If a director fails, its cache is no longer available to the cluster.As a result, the total size of the global cache is reduced by the amount that was contributed by the failed director1.
* Removal from Cluster: When the failed director is physically removed from the cluster, its cache is permanently removed from the global cache pool, resulting in a decrease in the total global cache size1.
* Impact on Performance: The reduction in global cache size may impact the performance of the VPLEX system, as there is less cache available for data storage and retrieval operations1.
* System Architecture: VPLEX architecture allows for multiple director failures without loss of access to data down to a single director, but the global cache size will decrease with each director failure1.
By understanding the role of each director's cache in contributing to the global cache, administrators can anticipate the effects of director failures on the overall performance of the VPLEX system.


NEW QUESTION # 31
In a VPLEX Metro, what factor has a direct impact on VPLEX performance with respect to WAN bandwidth?

  • A. Raid rebuild on array
  • B. Write rate on distributed volumes
  • C. Thin pool rebalances
  • D. Read rate on distributed volumes

Answer: B

Explanation:
In a VPLEX Metro environment, the write rate on distributed volumes has a direct impact on VPLEX performance with respect to WAN bandwidth. Here's how:
* Distributed Volumes: Distributed volumes in VPLEX Metro span across two geographically separated clusters and are designed to provide continuous availability and data mobility1.
* Write Operations: Write operations on distributed volumes require data to be written to both clusters before an acknowledgment is sent back to the host.This ensures data consistency across both sites2.
* WAN Bandwidth: The Wide Area Network (WAN) bandwidth between the two clusters is a critical factor in the performance of these write operations.If the WAN bandwidth is insufficient, it can lead to increased latency and reduced throughput3.
* Performance Impact: With only half the available WAN-COM paths, VPLEX can exceed bandwidth limitations on the existing WAN-COM paths, causing severe latency impacting the remote writes of distributed devices3.
* Best Practices: VPLEX best practices indicate that the round-trip time (RTT) between VPLEX clusters shouldn't exceed 5 ms to provide the best performance, and an RTT of 1 ms is recommended for a campus-wide network2.
By managing the write rate on distributed volumes and ensuring adequate WAN bandwidth, VPLEX Metro can maintain high performance and meet the required service levels for data availability and accessibility.


NEW QUESTION # 32
How are physical ports numbered for each I/O module in VS6 VPLEX hardware?

  • A. Director-A: 1 to 4 from the bottom
    Director-B: 1 to 4 from the top
  • B. Director-A: 1 to 4 from the top
    Director-B: 1 to 4 from the bottom
  • C. Director-A: 0 to 3 from the top
    Director-B: 0 to 3 from the bottom
  • D. Director-A: 0 to 3 from the bottom
    Director-B: 0 to 3 from the top

Answer: C

Explanation:
* Physical Port Numbering: Physical ports on I/O modules are numbered to provide a unique identifier for each port. This numbering is important for configuration, management, and troubleshooting purposes.
* Director Modules: In VPLEX hardware, director modules are key components that manage data flow and connectivity. Each director module contains I/O modules with multiple physical ports.
* Numbering Convention: The numbering convention for physical ports may start from either the top or the bottom of the I/O module, depending on the design specifications provided by the manufacturer1.
* VS6 VPLEX Hardware: For the VS6 VPLEX hardware, the specific numbering of physical ports for each I/O module would be detailed in the official Dell VPLEX documentation, which would provide diagrams and descriptions of the hardware components2.
* Configuration and Setup: Understanding the physical port numbering is crucial for the proper configuration and setup of the VPLEX system, as it affects zoning, mapping, and other storage network configurations3.
Since the exact numbering of physical ports for each I/O module in VS6 VPLEX hardware is not provided in the search results, it is recommended to consult the official Dell VPLEX documentation or contact Dell support for verified information.
-date and official guidance.


NEW QUESTION # 33

Which number in the exhibit highlights the Director-A back-end ports?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: C

Explanation:
The image provided appears to be a diagram or photograph of the back panel of a Dell VPLEX system. The back panel is divided into two sections, each presumably representing a director module. Each section has a set of ports highlighted and labeled with numbers 1, 2, 3, and 4. According to the question provided, which asks to identify the Director-A back-end ports from the options given (OA 1, OB 2, OC 4, OD 3), the verified answer is number 3. This can be inferred because typically in such systems, 'A' might refer to the first director or left side when looking at the back panel.


NEW QUESTION # 34
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