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EMC Dell VPLEX Deploy Achievement 認定 D-VPX-DY-A-24 試験問題 (Q45-Q50):

質問 # 45
A storage administrator created a local RAID-0 virtual volume. However, the administrator decided to increase data protection by requiring a distributed virtual volume.
What is the recommended method to change the local volume to a distributed volume?

A. Place the volume in a consistency group and enable remote access
B. Create a device on the remote cluster without a virtual volume and attach it as a mirror
C. Use device migration to move the device to cluster-2
D. Use VIAS to create a new distributed device, then perform a device migration

正解：B

解説：
To increase data protection by converting a local RAID-0 virtual volume to a distributed virtual volume, the recommended method is to create a corresponding device on the remote cluster and then attach it as a mirror to the existing local device. This process effectively creates a distributed virtual volume that spans across both clusters.
* Create a Device on the Remote Cluster: Start by creating a new device on the remote VPLEX cluster.
This device should be of the same size as the local RAID-0 virtual volume and should not have a virtual volume associated with it1.
* Attach as a Mirror: Once the remote device is created, attach it as a mirror to the local RAID-0 virtual volume. This operation is performed using the VPLEX CLI and will begin the process of mirroring the data from the local device to the remote device1.
* Synchronization: After attaching the remote device as a mirror, the VPLEX system will synchronize the data between the local and remote devices. This ensures that both devices have identical data and are in a consistent state1.
* Distributed Virtual Volume: Once the synchronization is complete, the local and remote devices together form a distributed virtual volume. This volume now has increased data protection because it is distributed across two different clusters1.
* Verification: Verify that the distributed virtual volume is functioning correctly by checking its status and ensuring that it is accessible from both clusters1.
* Best Practices: It is important to follow the best practices for creating and managing distributed virtual volumes as outlined in the Dell VPLEX Deploy Achievement documents. This includes proper planning, execution, and verification of the mirroring process1.
In summary, the recommended method to change a local RAID-0 virtual volume to a distributed virtual volume is to create a corresponding device on the remote cluster and attach it as a mirror, thereby forming a distributed virtual volume with increased data protection.

質問 # 46
Which Management Server command shows the overall VPLEX status?

A. ndu pre-check
B. VPLEXPlatformHealthCheck
C. cluster status
D. cluster summary

正解：C

解説：
The command that shows the overall VPLEX status is cluster status. This command provides a comprehensive view of the health and status of the VPLEX cluster.
* Command Usage: The cluster status command is executed in the VPLEX CLI (Command Line Interface). When run, it will display the status of the VPLEX cluster, including the health of the directors, connectivity, and any issues that may be affecting the system1.
* Overall Status: The output from the cluster status command includes information about the operational state of the cluster, such as the status of the storage volumes, the inter-cluster communication, and the performance metrics1.
* Health Check: This command is often used as a quick health check to ensure that the VPLEX system is functioning correctly and to identify any potential issues that need to be addressed1.
* Monitoring and Troubleshooting: The cluster status command is a valuable tool for monitoring the VPLEX system and for troubleshooting any problems that may arise1.
* Documentation Reference: For more information on the usage of the cluster status command and other management server commands, administrators should refer to the VPLEX CLI and Administration Guides for the code level the VPLEX is running1.
In summary, the cluster status command is used to display the overall status of the VPLEX system, providing administrators with a quick and effective way to monitor the health and performance of the cluster.

質問 # 47
What is a prerequisite for expanding a VPLEX virtual volume using the storage volume method?

A. Virtual volume is mapped 1:1 to storage volume
B. Virtual volume is in a consistency group
C. Virtual volume is in a storage view
D. Storage volume is claimed as thin-enabled

正解：A

解説：
When expanding a VPLEX virtual volume using the storage volume method, it is essential that the virtual volume is mapped 1:1 to a storage volume. This means that each virtual volume corresponds to a single storage volume on the back-end array.
* 1:1 Mapping: A 1:1 mapping ensures that there is a direct relationship between the virtual volume in VPLEX and the underlying storage volume. This is necessary for the VPLEX system to correctly expand the virtual volume when the back-end storage volume is expanded1.
* Expansion Process: To expand the virtual volume, the corresponding back-end storage volume is first expanded using the array's native tools or interfaces. Once the back-end volume is expanded, VPLEX can recognize the additional capacity and expand the virtual volume accordingly1.
* Consistency with Back-End: The expansion of the virtual volume must reflect the actual physical expansion of the storage volume to maintain data integrity and consistency1.
* Storage Volume Method: The storage volume method refers to the process of expanding the physical storage volume on the back-end array, which is then reflected in the virtual volume presented by VPLEX1.
* Documentation Reference: For detailed instructions on expanding virtual volumes using the storage volume method, administrators should refer to the SolVe Desktop Procedure Generator document on
'How to Expand a virtual volume' provided by Dell1.
In summary, the prerequisite for expanding a VPLEX virtual volume using the storage volume method is that the virtual volume must be mapped 1:1 to the storage volume. This mapping is crucial for the expansion process to be carried out successfully.

質問 # 48
What is the correct order of steps to migrate from an old array to a new one without disruption using VPLEX?

正解：

解説：

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.

質問 # 49
What is required to add a RecoverPoint cluster to VPLEX?

A. RecoverPoint cluster license number
B. RecoverPoint cluster Management IP address
C. RecoverPoint cluster name
D. RecoverPoint cluster ID

正解：B

解説：
To add a RecoverPoint cluster to VPLEX, the essential requirement is the RecoverPoint cluster's Management IP address. This IP address is used to manage and integrate the RecoverPoint cluster with the VPLEX system.
* RecoverPoint Cluster Installation: The installation process for a RecoverPoint cluster involves preparing the physical and virtual RecoverPoint Appliances (RPAs) and connecting them using the Deployment Manager1.
* Management IP Address: The Management IP address is crucial as it allows the VPLEX system to communicate with the RecoverPoint cluster for management and operational tasks1.
* Integration Process: The integration of RecoverPoint with VPLEX includes configuring the RecoverPoint system within the VPLEX environment, which requires the Management IP address to
* establish a connection between the two systems1.
* Configuration Steps: The steps to add a RecoverPoint cluster to VPLEX involve accessing the VPLEX Management Console, entering the RecoverPoint cluster's Management IP address, and following the guided setup to complete the integration1.
* Best Practices: It is recommended to follow the best practices and guidelines provided in the Dell VPLEX Deploy Achievement documents and the RecoverPoint deployment guides to ensure a successful integration of the RecoverPoint cluster with VPLEX1.
In summary, the verified answer for what is required to add a RecoverPoint cluster to VPLEX is the RecoverPoint cluster's Management IP address. This address is used to manage the cluster and integrate it with the VPLEX system for enhanced data protection and disaster recovery capabilities.

質問 # 50
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