D-PVM-OE-01 Exam Dumps - Dell PowerMax Operate v.2

Step by Step Comprehensive Detailed Explanation:

In an MDM (Migration for Dell EMC) migration, data is moved from a source array to a target array. When the symdm sync -stop command is issued, it puts the migration into the CutoverNoSync state. This state signifies that:

Synchronization Stopped:Active data synchronization between the source and target arrays has been stopped.

Data on Both Arrays:However, the customer data still resides onboththe source and target arrays. This is because the CutoverNoSync state is a transitional state that allows for a controlled cutover to the target array.

The next step would typically involve a cutover operation, where host access is switched to the target array, and the source array is removed from the migration configuration.

Why other options are incorrect:

A. Only the target array:While the goal is to eventually have the data only on the target, in the CutoverNoSync state, data still exists on both arrays.

B. Only on the source array:Data has already been partially or fully copied to the target array during the migration process.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell Solutions Enabler 10.0.0 CLI User Guide:This guide provides detailed information about the symdm command and its various options, including the sync -stop command and the CutoverNoSync state. You can find this document on the Dell Support website by searching for "Solutions Enabler CLI User Guide."

Dell PowerMax Family: Essentials and Best Practices Guide:This guide may offer general information about data migration and the different states involved in the process.

https://visiondatacenter.com/products/DELLEMC_VMAX450F/vmax-software-datasheet.pdf

Step by Step Comprehensive Detailed Explanation:

Non-Disruptive Migration (NDM) in PowerMax offers different modes for migrating data between storage arrays. When migrating from a VMAX array running Enginuity 5876 to a PowerMax running PowerMaxOS 5978, theAdaptive Copymode is used.

Adaptive Copy mode is designed for migrations between different storage array platforms or microcode versions. It provides flexibility and efficiency by dynamically adjusting the migration process based on the source and target array capabilities.

Why other options are incorrect:

A. Asynchronous:This mode is typically used for SRDF replication, not NDM.

C. Pass-through:This mode is not relevant to NDM.

D. Metro-based:This mode is used for specific metro distance configurations in SRDF.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell PowerMax Family: Essentials and Best Practices Guide:This guide provides an overview of NDM and its different modes, including Adaptive Copy. It also discusses the scenarios where each mode is applicable.

Dell Solutions Enabler 10.0.0 CLI User Guide:This guide may provide further details about NDM commands and options, including how to specify the migration mode.

Step by Step Comprehensive Detailed Explanation:

The Workload Planner in Unisphere for PowerMax helps you analyze and predict the performance impact of adding new workloads to your storage array. It uses sophisticated algorithms to calculate howthe addition of a new workload will affect the existing workloads and whether it will violate any service level objectives (SLOs).

To determine if a Storage Group workload is stable, the Planner considers two key calculated values:

Read Response Time:The predicted read response time of the Storage Group after the new workload is added.

Write Response Time:The predicted write response time of the Storage Group after the new workload is added.

The Planner compares these calculated values against the service level (SL) defined for the Storage Group. Ifboththe calculated read and write response times fall within the defined SL response time, the Planner considers the workload to be stable. This means that the new workload can be added without negatively impacting the performance of the existing workloads or violating the SLOs.

Why other options are incorrect:

A. One of the calculated values is within 10-20% of the SL-defined response time:Both read and write response times must be within the defined SL, not just one.

B. Both calculated values are within a 10-15% threshold of the SL-defined response time:The threshold is not fixed at 10-15%. The calculated values must be within the actual SL-defined response time.

C. One of the calculated values remains within the SL-defined response time:Again, both read and write response times need to be within the defined SL.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell Unisphere for PowerMax 10.0.0 Online Help:The online help for Unisphere provides detailed information about the Workload Planner feature, including how it calculates and analyzes workload stability. You can access this help within Unisphere itself or on the Dell Support website.

Dell PowerMax Family: Essentials and Best Practices Guide:This guide may offer general information about performance management and workload planning in PowerMax, providing context for understanding the Workload Planner's functionality.