D-VPX-DY-A-24 NEW DUMPS BOOK & D-VPX-DY-A-24 CLEAR EXAM

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EMC Dell VPLEX Deploy Achievement Sample Questions (Q52-Q57):

NEW QUESTION # 52
What are the requirements to upgrade a VPLEX from VS2 to VS6?

  • A. GeoSynchrony 6.0 minimum
    Both VS2 and VS6 at same code level
    Same number of engines
    WWN zoning and temporary FC Local COM I/O modules in VS6
  • B. GeoSynchrony 5.0 minimum
    Both VS2 and VS6 at same code level
    Same number of engines
    WWN zoning
  • C. GeoSynchrony 6.0 minimum
    Both VS2 and VS6 at same code level
    Same number of engines
    WWN zoning and temporary FC Local COM I/O modules in VS2
  • D. GeoSynchrony 6.0 minimum
    Both VS2 and VS6 at same code level
    Same number of engines
    WWN zoning

Answer: D

Explanation:
Upgrading a VPLEX from VS2 to VS6 hardware involves several critical requirements to ensure a successful and non-disruptive process:
* GeoSynchrony Version: The system must be running at least GeoSynchrony 6.0. This is the software that orchestrates operations across the VPLEX infrastructure and ensures compatibility between different hardware generations1.
* Code Level Consistency: Both the VS2 and VS6 platforms must be operating at the same software code level. This uniformity is crucial to prevent any incompatibility issues during the upgrade process1.
* Engine Count: The number of engines in the existing VS2 setup must match the number of engines in the VS6 configuration. This alignment is necessary to maintain performance and capacity expectations post-upgrade1.
* WWN Zoning: Proper WWN (World Wide Name) zoning must be in place. WWN zoning is a method of isolating network traffic to ensure that devices within a Fibre Channel network can only communicate with each other if they are in the same zone1.
* Upgrade Process: The upgrade process typically involves replacing the VS2 hardware with VS6 components. This hardware swap should be done in a manner that does not disrupt the ongoing operations and services1.
* Post-Upgrade Verification: After the hardware upgrade, it's essential to verify that all systems are functioning correctly. This includes checking the status of the front-end and back-end ports, as well as the health of the virtual volumes1.
* Documentation and Support: Detailed procedures for the upgrade process can be found in the SolVe Desktop Procedure Generator, which provides step-by-step instructions for upgrading cluster hardware from VS2 to VS61.
In summary, the requirements for upgrading a VPLEX from VS2 to VS6 include running GeoSynchrony 6.0 or higher, ensuring both platforms are at the same code level, matching the number of engines, and having proper WWN zoning in place.


NEW QUESTION # 53
What condition would prevent volume expansion?

  • A. Logging volume in re-synchronization state
  • B. Rebuild currently occurring on the volume
  • C. Volume not belonging to a consistency group
  • D. Metadata volume being backed up

Answer: B

Explanation:
In the context of Dell VPLEX, a rebuild occurring on a volume is a condition that would prevent the expansion of that volume. This is because the system needs to ensure data integrity and consistency during the rebuild process before any changes to the volume size can be made.
* Rebuild Process: A rebuild is a process where VPLEX re-synchronizes the data across the storage volumes, typically after a disk replacement or a failure1.
* Volume Expansion: Expanding a volume involves increasing its size to accommodate more data. This process requires that the volume is in a stable state without any ongoing rebuild operations1.
* Data Integrity: During a rebuild, the system is focused on restoring the correct data across the storage volumes. Attempting to expand a volume during this process could lead to data corruption or loss1.
* System Restrictions: VPLEX systems have built-in mechanisms to prevent administrators from performing actions that could jeopardize the system's stability or data integrity, such as expanding a volume during a rebuild1.
* Post-Rebuild Expansion: Once the rebuild process is complete and the volume is fully synchronized, the administrator can then proceed with the volume expansion1.
In summary, a rebuild currently occurring on a volume is a condition that would prevent the expansion of that volume in a Dell VPLEX system. The system must first ensure that the rebuild process is completed successfully before allowing any changes to the volume's size.


NEW QUESTION # 54
Which command can be used to create a distributed device from specified local devices?

  • A. storage-volume compose
  • B. ds dd create
  • C. storage-tool compose
  • D. virtual-volume create

Answer: B

Explanation:
To create a distributed device from specified local devices in a Dell VPLEX environment, the command used is ds dd create. This command is part of the VPLEX CLI and stands for "distributed storage - distributed device create".
* Identify Local Devices: Before creating a distributed device, you need to identify the local devices that will be part of the distributed device. These are typically volumes that are already provisioned and claimed by the VPLEX system1.
* Use the ds dd create Command: Execute the ds dd create command in the VPLEX CLI, specifying the local devices that you want to include in the distributed device. The syntax for the command includes the names of the local devices and the name you want to assign to the distributed device1.
* Command Execution: The command will initiate the creation of the distributed device, which involves pairing the specified local devices across the VPLEX clusters to create a single distributed volume that spans both clusters1.
* Verification: After running the command, verify that the distributed device has been created successfully by using the ll /distributed-storage/distributed-devices/ command, which lists all the distributed devices in the system1.
* Best Practices: It is important to follow the best practices for creating distributed devices as outlined in the Dell VPLEX Deploy Achievement documents. This includes ensuring that the local devices are properly configured and that the VPLEX clusters are in a healthy state before creating the distributed device1.
In summary, the ds dd create command is used to create a distributed device from specified local devices in a Dell VPLEX environment. This command is a fundamental part of managing distributed storage within VPLEX and is essential for achieving high availability and data mobility across clusters.


NEW QUESTION # 55
When are the front-end ports enabled during a VPLEX installation?

  • A. After exposing the storage to the hosts
  • B. After creating the metadata volumes and backup
  • C. Before launching the VPLEX EZ-Setup wizard
  • D. Before creating the metadata volumes and backup

Answer: B

Explanation:
During a VPLEX installation, the front-end ports are enabled after the metadata volumes and backup have been created. This sequence ensures that the system's metadata, which is crucial for the operation of VPLEX, is secured before the storage is exposed to the hosts.
* Metadata Volumes Creation: The first step in the VPLEX installation process involves creating
* metadata volumes. These volumes store configuration and operational data necessary for VPLEX to manage the virtualized storage environment1.
* Metadata Backup: After the metadata volumes are created, it is essential to back up this data. The backup serves as a safeguard against data loss and is a critical step before enabling the front-end ports1.
* Enabling Front-End Ports: Once the metadata is secured, the front-end ports can be enabled. These ports are used for host connectivity, allowing hosts to access the virtual volumes presented by VPLEX1.
* Exposing Storage to Hosts: With the front-end ports enabled, the storage can then be exposed to the hosts. This step involves presenting the virtual volumes to the hosts through the front-end ports1.
* Final Configuration: The final configuration steps may include zoning, LUN masking, and setting up host access to the VPLEX virtual volumes. These steps are completed after the front-end ports are enabled and the storage is exposed1.
In summary, the front-end ports are enabled during a VPLEX installation after the metadata volumes and backup have been created, which is reflected in option D. This ensures that the system metadata is protected and available before the storage is made accessible to the hosts.


NEW QUESTION # 56
LUNs are being provisioned from active/passive arrays to VPLEX. What is the path requirement for each VPLEX director when connecting to this type of array?

  • A. At least two paths to both the active and passive controllers of each array
  • B. At least four paths to every array and storage volume
  • C. At least two paths to both the active and non-preferred controllers of each array
  • D. At least two paths to every array and storage volume

Answer: A

Explanation:
When provisioning LUNs from active/passive arrays to VPLEX, it is essential that each VPLEX director has at least two paths to both the active and passive controllers of each array. This requirement ensures high availability and redundancy for the storage volumes being managed by VPLEX1.
* Active/Passive Arrays: Active/passive arrays have one controller actively serving I/O (active) and
* another on standby (passive). The VPLEX system must have paths to both controllers to maintain access to the LUNs in case the active controller fails1.
* Path Redundancy: Having at least two paths to both controllers from each VPLEX director provides redundancy. If one path fails, the other can continue to serve I/O, preventing disruption to the host applications1.
* VPLEX Configuration: In the VPLEX configuration, paths are zoned and masked to ensure that the VPLEX directors can access the LUNs on the storage arrays. Proper zoning and masking are critical for the paths to function correctly1.
* Failover Capability: The dual-path configuration allows VPLEX to perform an automatic failover to the passive controller if the active controller becomes unavailable, ensuring continuous data availability1.
* Best Practices: Following the path requirement as per Dell EMC's best practices ensures that the VPLEX system can provide the expected level of service and data protection for the provisioned LUNs1.
In summary, the path requirement for each VPLEX director when connecting to active/passive arrays is to have at least two paths to both the active and passive controllers of each array, providing the necessary redundancy and failover capabilities.


NEW QUESTION # 57
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