D-VPX-OE-A-24 VALID EXAM ONLINE & SAMPLE D-VPX-OE-A-24 QUESTIONS PDF

D-VPX-OE-A-24 Valid Exam Online & Sample D-VPX-OE-A-24 Questions Pdf

D-VPX-OE-A-24 Valid Exam Online & Sample D-VPX-OE-A-24 Questions Pdf

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EMC Dell VPLEX Operate Achievement Sample Questions (Q24-Q29):

NEW QUESTION # 24
What is the maximum number of synchronous consistency groups supported by VPLEX?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: A


NEW QUESTION # 25

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

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: B

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 # 26
Why is it EMC best practice that each back-end LUN has a connection to all the A-directors and to all the B-directors in the VPLEX cluster?

  • A. Ensures writes are mirrored on director local cache
  • B. Reduces the number of ITLs
  • C. Prevents data unavailability during a non-disruptive upgrade
  • D. Optimizes global read cache

Answer: C

Explanation:
It is EMC best practice to ensure that each back-end LUN has a connection to all the A-directors and to all the B-directors in the VPLEX cluster to prevent data unavailability during a non-disruptive upgrade. Here's why:
* Non-Disruptive Upgrades: VPLEX allows for non-disruptive upgrades, meaning that system updates and maintenance can occur without impacting data availability or application performance1.
* Director Connectivity: By connecting each back-end LUN to all A-directors and B-directors, VPLEX ensures that there are multiple paths for data access.If one director is being upgraded or is offline, the other directors can continue to provide access to the LUNs1.
* High Availability: This connectivity model supports VPLEX's high availability architecture, allowing for continuous operations even during maintenance activities1.
* Redundancy: The practice of connecting LUNs to all directors provides redundancy, ensuring that there is no single point of failure that could lead to data unavailability1.
* Best Practice: EMC recommends this approach as a best practice to maximize the uptime and resilience of the storage environment, which is critical for mission-critical applications that require constant data access1.
By following this best practice, organizations can leverage VPLEX's capabilities to maintain data availability and ensure business continuity, even when system upgrades or director maintenance is required.


NEW QUESTION # 27
When is expanding a virtual volume using the Storage Volume expansion method a valid option?

  • A. Virtual volume is a metadata volume
  • B. Virtual volume has minor problems, as reported by health-check
  • C. Virtual volume previously expanded by adding extents or devices
  • D. Virtual volume is mapped 1:1 to the underlying storage volume

Answer: D

Explanation:
Expanding a virtual volume using the Storage Volume expansion method is a valid option when the virtual volume is mapped 1:1 to the underlying storage volume. This method is suitable when each virtual volume corresponds directly to a single storage volume on the backend array, and there is a need to expand the volume's capacity.
* 1:1 Mapping: A 1:1 mapping means that there is a direct relationship between a virtual volume in VPLEX and a single storage volume on the backend storage array.This allows for a straightforward expansion process as any increase in the size of the backend volume can be reflected in the virtual volume1.
* Storage Volume Expansion: The Storage Volume expansion method involves increasing the size of the backend storage volume first.This is typically done through the storage array's management interface1.
* VPLEX Recognition: Once the backend storage volume is expanded, VPLEX must recognize the new size.This may require rescanning the storage volumes within VPLEX to detect the changes1.
* Virtual Volume Expansion: After VPLEX recognizes the increased size of the storage volume, the corresponding virtual volume can be expanded to utilize the additional capacity.This is done within the VPLEX management interface1.
* Exclusion of Other Options: The other options listed, such as a virtual volume having minor problems, being a metadata volume, or previously expanded by adding extents or devices, are not typically associated with the Storage Volume expansion methD.These scenarios may require different approaches or may not be suitable for expansion using this method1.
By ensuring that the virtual volume is mapped 1:1 to the underlying storage volume, administrators can effectively utilize the Storage Volume expansion method to increase the capacity of virtual volumes in a VPLEX environment.


NEW QUESTION # 28
What is the maximum number of virtual volumes that can be placed into a single consistency group?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: D

Explanation:
The maximum number of virtual volumes that can be placed into a single consistency group in a Dell VPLEX environment is800. This limit is set to ensure the manageability and performance of the consistency group within the VPLEX system.
Here's a detailed explanation:
* Consistency Group Capacity:A consistency group in VPLEX is a collection of virtual volumes that are managed together to maintain write-order fidelity, which is crucial for applications requiring strong consistency guarantees.
* Limit Rationale:The limit of 800 virtual volumes is determined based on the VPLEX system's ability to handle the overhead associated with managing a large number of volumes in a consistency group, including the coordination of writes and snapshots.
* Operational Management:By capping the number of virtual volumes in a consistency group, VPLEX ensures that the group can be managed effectively without compromising the performance of the storage system.
* Documentation Reference:The Dell VPLEX Operate Achievement documents outline the specifications and limitations of VPLEX systems, including the details of consistency group capacities1.
* Best Practices:Administrators are advised to follow best practices and guidelines provided by Dell when configuring and managing consistency groups to avoid exceeding the recommended limits and to ensure optimal system performance.
It's important for storage administrators to be aware of these limitations when planning and implementing VPLEX storage solutions to ensure they are operating within the supported configurations.


NEW QUESTION # 29
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