Authentic EMC Certification Exam D-VPX-DY-A-24 Questions Answers

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.

When LUNs belonging to an ESXi cluster are encapsulated behind VPLEX, the ESXi administrator needs to be provided with the Virtual Volume Page Data (VPD) of the virtual volumes. The VPD contains metadata about the virtual volumes that allows the ESXi host to properly identify and interact with them.

Encapsulation Process: During the encapsulation process, the physical LUNs are virtualized and presented as virtual volumes through VPLEX. This process involves the VPLEX claiming the LUNs and presenting them to the ESXi hosts as new devices1.

Re-discovery of Datastore and RDM LUNs: After encapsulation, the ESXi administrator must perform a rescan of the storage adapters to discover the new virtual volumes. The VPD of the virtual volumes, which includes information such as the device identifiers and characteristics, is crucial for the ESXi host to recognize and mount the datastores and RDM LUNs2.

Importance of VPD: The VPD is essential because it provides the ESXi host with the necessary information to differentiate between the virtual volumes and other storage devices. Without the VPD, the ESXi host may not be able to properly identify the encapsulated LUNs, leading to issues with datastore accessibility1.

Best Practices: It is recommended to follow the best practices and required configurations for a vSphere Metro Storage Cluster using EMC VPLEX Storage array as outlined in VMware KB articles and Dell support documents. This ensures a smooth encapsulation process and proper functioning of the ESXi hosts with the VPLEX storage volumes1.

In summary, sharing the Virtual Volume VPD with the ESXi administrator is a critical step in ensuring that the ESXi cluster can successfully re-discover the datastore and the RDM LUNs after they have been encapsulated behind VPLEX.

For zoning FC WAN COM ports on a VPLEX Metro, the requirement is that each WAN COM port in the local cluster must be zoned to all WAN COM ports in the remote cluster. This setup ensures that there is a redundant network capability where each director on one cluster communicates with all the directors on the other site, even in the event of a fabric or network failure1.

Zoning Configuration: The zoning needs to be fixed such that all A2-FC00 only see (are zoned with) remote A2-FC00 ports, and similarly for A2-FC01 with A2-FC01, and so on for all WAN COM ports1.

Redundant Network: This zoning configuration provides a redundant network capability, which is essential for maintaining communication between the two VPLEX clusters in a Metro configuration1.

Fabric Separation: The FC WAN COM ports will be connected to dual separate backbone fabrics or networks that span two sites, allowing for data flow between the two VPLEX clusters without requiring a merged fabric between the two sites1.

Best Practices: For configuring FC WAN COM ports, it is recommended to refer to the “Implementation and Planning Best Practices for EMC VPLEX Technical Notes” provided by Dell1.

In summary, the requirement for zoning FC WAN COM ports on a VPLEX Metro is to ensure that each WAN COM port in the local cluster is zoned to all WAN COM ports in the remote cluster, providing a robust and fault-tolerant communication network.