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EMC Dell VPLEX Deploy Achievement Sample Questions (Q40-Q45):

NEW QUESTION # 40
What is the correct order of steps to migrate from an old array to a new one without disruption using VPLEX?

Answer:

Explanation:

Explanation:

The correct order of steps to migrate from an old array to a new one without disruption using VPLEX is as follows:
* Connect the new storage array to VPLEX.
* VPLEX discovers the new array, and the admin creates migration target devices.
* The VPLEX admin initiates mobility job(s).
* VPLEX admin monitors the progress of the migration; I/O to the host continues.
* Once volumes on the new array are fully synchronized, the admin commits the migration.
* Connect New Storage Array: The first step involves physically connecting the new storage array to the VPLEX system and ensuring proper connectivity1.
* Discovery and Device Creation: VPLEX then discovers the new array. The administrator uses the VPLEX management interface to create the target devices that will receive the data from the old array1.
* Initiate Mobility Jobs: The administrator initiates mobility jobs using the VPLEX CLI or management interface. These jobs handle the data transfer from the old array's devices to the new array's devices1.
* Monitor Migration Progress: While the mobility jobs are running, the administrator monitors the progress. During this time, the host continues to perform I/O operations without disruption1.
* Commit Migration: After the data has been fully synchronized to the new array, the administrator commits the migration. This finalizes the transfer and allows the host to use the new array's devices as if they were the original ones1.
This process ensures a smooth and non-disruptive migration from an old storage array to a new one using VPLEX, maintaining continuous availability of applications and data.

NEW QUESTION # 41
What is the purpose of issuing the batch-migrate check-plan command?

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

Answer: D

NEW QUESTION # 42
What is an EMC best practice for connecting VPLEX to back-end arrays?

A. One multiple switch fabric should be used for each VPLEX engine
B. Two active paths per VPLEX engine to any storage volume is optimal
C. Back-end connections should be distributed across one director
D. Each VPLEX director should have four active paths to every back-end array storage volume

Answer: D

Explanation:
EMC recommends specific best practices for connecting VPLEX to back-end storage arrays to ensure high availability and optimal performance. One of these best practices is that each VPLEX director should have four active paths to every back-end array storage volume.
* Multiple Paths: Having multiple active paths from each VPLEX director to the storage volumes ensures that there is no single point of failure. If one path fails, the other paths can continue to provide connectivity1.
* Load Balancing: Multiple paths also allow for load balancing of I/O operations across the different paths, which can improve performance and reduce the risk of bottlenecks1.
* Path Redundancy: Path redundancy is crucial for maintaining continuous availability, especially in environments where the VPLEX is used for mission-critical applications1.
* Configuration: The configuration of the paths should be done in accordance with EMC's best practices, which include proper zoning and masking in the SAN environment1.
* Documentation: Detailed guidelines and best practices for VPLEX SAN connectivity, including back-end array connections, are available in EMC's documentation, which provides comprehensive instructions for setting up and managing these connections1.
In summary, EMC's best practice for connecting VPLEX to back-end arrays is to ensure that each VPLEX director has four active paths to every back-end array storage volume. This setup provides the necessary redundancy and performance for a robust and reliable storage environment.

NEW QUESTION # 43
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: A

Explanation:
* Context: The Dell VPLEX system allows for the expansion of virtual volumes to accommodate growing data storage needs without disrupting ongoing operations.
* Initialization Process: When expanding storage volumes, the system undergoes initialization processes to integrate the new storage capacity effectively.
* Concurrent Processes Limit: For virtual volumes built on RAID-1 or distributed RAID-1 devices, the maximum number of initialization processes that can run concurrently per cluster is 1000. This limit ensures optimal performance and resource management within the cluster.
* Implications: If the limit of 1000 concurrent processes is reached, no new storage volume expansions can be initiated until some of the ongoing initialization processes are completed.
References:
* Dell EMC Metro Node Administrator Guide

NEW QUESTION # 44
During VPLEX installation, four 78 GB metadata volumes have to be assigned to the VPLEX back-end ports.
How are these volumes used?

A. One is used as the meta-volume.
One is used as the meta-volume backup
Two are used as logging volumes when the clusters lose connectivity.
B. Two are mirrored and used as the meta-volume.
Two are used in an alternating fashion as meta-volume backups.
C. Two are mirrored and used as the meta-volume.
Two are also mirrored and used as the meta-volume daily backup.
D. One is used as the meta-volume.
Three are used in an alternating fashion as meta-volume backups.

Answer: B

Explanation:
During the VPLEX installation, metadata volumes play a critical role in the system's operation. Here's how the four 78 GB metadata volumes are utilized:
* Meta-Volume Configuration: Two of the metadata volumes are mirrored to create the active meta-volume. This mirroring provides redundancy, ensuring that metadata, which is essential for the operation of VPLEX, is protected against single points of failure1.
* Backup Meta-Volumes: The other two metadata volumes are used as backups for the meta-volume.
They are used in an alternating fashion, which means that they can be rotated to maintain a fresh and consistent backup of the meta-volume1.
* Importance of Metadata: The metadata in VPLEX contains information about the virtual volumes, mappings, and other configuration details that are crucial for the system's virtualization capabilities1.
* System Resilience: By having mirrored meta-volumes and alternating backup volumes, VPLEX ensures high availability and resilience, which is critical for maintaining continuous operations and data integrity1.
* Operational Continuity: In the event of a failure or corruption of the active meta-volume, VPLEX can quickly switch to one of the backup volumes, minimizing downtime and maintaining operational continuity1.
In summary, the four 78 GB metadata volumes assigned to the VPLEX back-end ports during installation are used to create a mirrored meta-volume and provide alternating backups, ensuring system resilience and data integrity.

NEW QUESTION # 45
......

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EMC Dell VPLEX Deploy Achievement Sample Questions (Q40-Q45):

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