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EMC Dell VPLEX Operate Achievement Sample Questions (Q18-Q23):

NEW QUESTION # 18
What is a consideration when using VPLEX RecoverPoint enabled consistency groups?

  • A. Production and local copy journals must be in different consistency groups.
  • B. Local virtual volumes and distributed virtual volumes can be in the same consistency group.
  • C. Local copy volumes and production volumes must reside in separate consistency groups.
  • D. Repository volume and journal volumes must be in different consistency groups.

Answer: A

Explanation:
When using VPLEX with RecoverPoint enabled consistency groups, it's important to consider how journals are managed:
* Production Journals: These are used by the production volumes for logging write I/Os before they are replicated to the remote site or local copy.
* Local Copy Journals: These are used by the local copy volumes for the same purpose as production journals but are specific to the local copies.
* Separation of Journals: To ensure proper replication and recovery processes, production and local copy journals must be kept in separate consistency groups.This separation is crucial for maintaining the
* integrity of the replication and avoiding conflicts between production and local copy operations1.
* RecoverPoint Configuration: In a VPLEX environment, RecoverPoint provides continuous data protection and replication.It is configured to work with VPLEX consistency groups to ensure that all writes are captured and can be recovered in case of a failure1.
* Best Practices: Dell's best practices for VPLEX RecoverPoint configurations recommend this separation of journals to ensure that the system can handle failover scenarios correctly and that data is not lost or corrupted1.
By following this consideration, storage administrators can ensure that their VPLEX RecoverPoint environment is configured for optimal data protection and disaster recovery readiness.


NEW QUESTION # 19
What steps are performed during extent and device migration?

  • A. Start, commit, clean, and remove
  • B. Create, commit, clean, and terminate
  • C. Start, commit, clean, and terminate
  • D. Create, clean, commit, and remove

Answer: B

Explanation:
The process of extent and device migration in a Dell VPLEX environment typically involves the following steps:
* Create: The initial step is to create a migration job for the extent or device. This involves specifying the source and target extents or devices and setting up the migration parameters.
* Commit: Once the migration job is created, the next step is to commit the jB.This action will start the migration process, where data begins to move from the source to the target.
* Clean: After the data has been successfully migrated, the system performs a cleanup operation to remove any temporary data structures or logs that were used during the migration process.
* Terminate: The final step is to terminate the migration jB.This step concludes the migration process and releases any resources that were allocated for the migration.
References:
* The Dell VPLEX documentation provides detailed procedures on how to perform data migration, including the steps involved in migrating extents and devices1.
* Best practices and technical guides from Dell also cover the topic of data migration, offering insights into the process and how to ensure a smooth migration experience1.
By following these steps, a storage administrator can successfully migrate extents and devices within the VPLEX environment, ensuring data availability and minimal disruption to services.


NEW QUESTION # 20

Which number in the exhibit highlights the Director-B front-end ports?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: D

Explanation:
In the exhibit provided, the number that highlights the Director-B front-end ports is 4. Here's the explanation:
* Director-B Identification: In a VPLEX system, each director is a separate hardware component that manages data flow. Director-B is one of these components.
* Front-End Ports: The front-end (FE) ports on a director are the interfaces through which the director communicates with hosts or other external devices.
* Number 4 in the Exhibit: The exhibit shows a hardware component with various sections labeled with numbers. Number 4 is located at the upper right quadrant, which is typically where front-end ports are found on a director module.
* VPLEX Documentation: The Dell EMC VPLEX documentation would provide diagrams and detailed descriptions of the hardware components, including the location of the Director-B front-end ports.
By understanding the layout of VPLEX hardware and referencing the official documentation, one can identify the correct number associated with the Director-B front-end ports in the exhibit.


NEW QUESTION # 21
What is the purpose of issuing the batch-migrate check-plan command?

  • A. Determines if the front-end IO rate is below the predetermined threshold
  • B. Verifies that the target devices have no virtual volumes configured
  • C. Determines if there is currently enough back-end bandwidth
  • D. Verifies that the source devices are not in a storage view

Answer: C

Explanation:
The batch-migrate check-plan command in Dell VPLEX is used to determine if there is currently enough back-end bandwidth to carry out a migration plan. This is crucial to ensure that the migration does not negatively impact the performance of other operations within the VPLEX environment.
* Back-End Bandwidth: The back-end bandwidth refers to the data transfer capacity between the VPLEX and its connected storage arrays.Adequate back-end bandwidth is essential for migration operations to prevent bottlenecks1.
* Migration Plan: Before executing a migration plan created by the batch-migrate create-plan command, it is important to check that the system has the necessary resources, such as sufficient back-end bandwidth, to support the migration without disruption1.
* Command Function: The batch-migrate check-plan command analyzes the current system load and the expected load from the migration to determine if the migration can proceed without exceeding the system's bandwidth capabilities1.
* Ensuring Performance: By verifying the availability of back-end bandwidth, the command helps to ensure that the migration will not interfere with the normal operations of the VPLEX system, maintaining overall system performance1.
* Pre-Migration Assessment: This command is part of the pre-migration assessment process, which is critical for planning and executing migrations effectively and efficiently within the VPLEX environment1.
The batch-migrate check-plan command is an important tool for administrators to validate the feasibility of migration plans and to ensure that migrations do not adversely affect the performance of the VPLEX system.


NEW QUESTION # 22
LUNs belonging to an ESXi cluster were encapsulated behind VPLEX. What information must be shared with the ESXi administrator so that they can re-discover the datastore and the RDM LUNs?

  • A. Virtual volume VPD
  • B. VML ID
  • C. UUID of back-end LUN
  • D. WWN:WWPN

Answer: A

Explanation:
When LUNs belonging to an ESXi cluster are encapsulated behind VPLEX, the information that must be shared with the ESXi administrator for them to re-discover the datastore and the RDM LUNs is the Virtual Volume VPD (Vital Product Data).
* Virtual Volume VPD: The VPD for a virtual volume contains essential information about the volume, such as its identifier, which is used by the ESXi host to recognize and differentiate the volume1.
* Re-Discovery Process: After encapsulation, the ESXi administrator will need to perform a rescan of the storage adapters on the ESXi hosts.During this rescan, the hosts use the VPD information to identify the newly encapsulated LUNs and re-discover the associated datastore and RDM LUNs1.
* Datastore and RDM LUNs: Datastores are storage containers that hold virtual machine files, while RDM (Raw Device Mapping) LUNs allow a virtual machine to directly access a storage device.Both rely on unique identifiers to ensure correct access and operation within the ESXi environment1.
* Sharing Information: The VPLEX administrator should provide the VPD information to the ESXi administrator, typically after the encapsulation process is complete and before the ESXi storage rescan is initiated1.
* Ensuring Access: By sharing the correct VPD information, the ESXi administrator can ensure that the ESXi cluster correctly identifies and regains access to the encapsulated LUNs, maintaining the continuity of services and data availability1.
The sharing of the Virtual Volume VPD is a critical step in the process of LUN encapsulation behind VPLEX, ensuring that the ESXi cluster can successfully re-discover and utilize the datastore and RDM LUNs.


NEW QUESTION # 23
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