Get Dell EMC D-PVM-OE-01 Exam Practice Questions - Real and Updated

Answer : A, C, E

Step by Step Comprehensive Detailed

Dell PowerMax storage arrays utilize different device types for various purposes. Solutions Enabler (SYMCLI) and Unisphere for PowerMax are management tools that can interact with these device types. Here's a breakdown:

SRDF Thin Devices (RDF1 or RDF2): These devices are specifically used for SRDF (Symmetrix Remote Data Facility) replication. RDF1 devices represent the local copy of data in an SRDF relationship, while RDF2 devices represent the remote copy. Both Solutions Enabler and Unisphere can manage these devices to configure and monitor SRDF replication.

Internal Thin Devices (Int+TDEV): These are thin provisioned devices that reside within the PowerMax storage array. They are used for general storage purposes and can be managed by both Solutions Enabler and Unisphere for tasks like provisioning, allocating capacity, and monitoring performance.

Thin Devices (TDEV): This is a general term for thin provisioned devices in PowerMax. Thin provisioning allows for efficient storage utilization by allocating capacity on demand. 1 Both Solutions Enabler and Unisphere can manage these devices.

https://www.n-able.com/blog/thin-provision-vs-thick-provision

https://www.n-able.com/blog/thin-provision-vs-thick-provision

Why other options are incorrect:

B . Thin BCV Devices (BCV+TDEV): BCV (Business Continuance Volume) devices are used for creating point-in-time copies for disaster recovery. While Solutions Enabler can manage BCV devices, Unisphere for PowerMax has limited functionality for managing them directly.

D . Data Devices (TDATs): TDATs are physical devices within the PowerMax array. While Solutions Enabler can interact with TDATs at a lower level, Unisphere for PowerMax primarily focuses on managing logical devices and storage groups.

Reference 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 PowerMax devices and their management. It mentions the different device types and how they are used in the PowerMax environment.

Dell Solutions Enabler 10.0.0 CLI User Guide: This guide provides detailed information about Solutions Enabler commands for managing various device types, including SRDF devices, thin devices, and internal devices.

Dell Unisphere for PowerMax 10.0.0 Online Help: The online help documentation for Unisphere for PowerMax explains how to manage different device types through the graphical user interface, including provisioning, monitoring, and configuring storage.

Answer : D

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Both the PowerMax 2500 and 8500 utilize NVMe over Fabrics (NVMe-oF) for high-speed data transfer. However, they differ in their internal fabric architecture:

PowerMax 2500: Uses a direct NVMe/PCIe connection between the compute nodes and the Dynamic Media Enclosures (DMEs).

PowerMax 8500: Employs a fully switched InfiniBand (IB) fabric for all NVMe-oF traffic. This means that the compute nodes and DMEs are interconnected through InfiniBand switches, providing a high-performance, low-latency, and scalable fabric for data transfer.

Therefore, the use of InfiniBand switches is a feature unique to the PowerMax 8500 compared to the PowerMax 2500.

Why other options are incorrect:

A . Persistent Memory: Both PowerMax 2500 and 8500 utilize Storage Class Memory (SCM), which is a type of persistent memory.

B . Mainframe Connectivity: Both models support mainframe connectivity.

C . Storage Class Memory: As mentioned above, both models use SCM.

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

PowerMax 2500 and 8500 Dynamic Fabric---A High-Performance Clustered Architecture for Enterprise Storage: This white paper provides a detailed comparison of the Dynamic Fabric architecture in both models, highlighting the use of InfiniBand switches in the PowerMax 8500. You can find this document on the Dell Technologies Info Hub.

Dell PowerMax Family: Essentials and Best Practices Guide: This guide offers a general overview of the PowerMax family, including the 2500 and 8500 models. It may provide context for understanding the differences in their architecture and features.

Answer : A

Step by Step Comprehensive Detailed

TimeFinder SnapVX snapshots in PowerMax can be configured with a time-to-live (TTL) setting. This setting automatically deletes the snapshot after the specified time period has elapsed. However, there are certain situations where a snapshot might persist beyond its TTL:

Linked Targets: If a snapshot has one or more linked targets associated with it, the snapshot will not be automatically deleted even if the TTL expires. This is because the linked targets depend on the snapshot for their data. The snapshot will remain available until all linked targets are deleted or unlinked.

Why other options are incorrect:

B . Snapshot was not manually terminated: The TTL setting is designed to automatically delete the snapshot; manual termination is not required.

C . Snapshot was created in NoCopy mode: The NoCopy mode affects how the snapshot is initially created, not its TTL behavior.

D . Reserved Capacity limit was exceeded: The Reserved Capacity limit applies to the overall storage space used by snapshots, not the TTL of individual snapshots.

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

Dell Solutions Enabler 10.0.0 TimeFinder SnapVX CLI User Guide: This guide provides detailed information about SnapVX features and functionalities, including the time-to-live setting and how it interacts with linked targets. You can find this document on the Dell Support website by searching for 'Solutions Enabler TimeFinder SnapVX CLI User Guide.'

Answer : C

Step by Step Comprehensive Detailed

When evaluating storage group compliance in PowerMax, Unisphere considers the weighted response time of the storage group against its defined service level objectives (SLOs). The compliance status is determined based on how well the storage group meets its response time goals over different time periods.

In this case, even though the storage group's weighted response time is compliant over the last four hours, the fact that it does not meet the defined response time for the last two weeks indicates an overall non-compliant status.

This means that while the storage group might be performing adequately in the short term, it has not consistently met its performance goals over a longer period. This could indicate potential performance issues or the need for adjustments to the storage group's configuration or service level.

Why other options are incorrect:

A . Stable: A stable status would indicate consistent compliance over all time periods.

B . Marginal: A marginal status might suggest borderline performance, but not necessarily a clear violation of SLOs.

D . Critical: A critical status would likely indicate a severe performance issue or a significant breach of SLOs.

Reference 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 storage group compliance monitoring, including how compliance status is determined and what the different status levels indicate. 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 service level objectives in PowerMax, providing context for understanding storage group compliance.

Answer : C

Step by Step Comprehensive Detailed

Unisphere for PowerMax offers different deployment options to manage PowerMax storage arrays. Based on the exhibit, we can identify the following:

Separate SYMAPI Server: The diagram shows a dedicated SYMAPI server. SYMAPI (Symmetrix Application Programming Interface) is a command-line interface used to manage PowerMax and VMAX storage arrays. This indicates that the Unisphere server is not directly connected to the storage arrays.

Unisphere Server Connected to SYMAPI Server: The Unisphere server is shown to be connected to the SYMAPI server. This means that the Unisphere server relies on the SYMAPI server to communicate with the PowerMax arrays.

No Direct Connection to Arrays: The Unisphere server does not have a direct connection to the PowerMax arrays.

Considering these points, the deployment option depicted in the exhibit is a remote deployment. In a remote deployment, the Unisphere server is installed on a separate host and communicates with the PowerMax arrays through a SYMAPI server. This allows for centralized management of multiple arrays from a single Unisphere instance.

Why other options are incorrect:

A . Embedded: In an embedded deployment, the Unisphere software runs directly on the PowerMax array itself. This eliminates the need for a separate Unisphere server.

B . Either remote or local: While the diagram could technically represent a local deployment with a dedicated SYMAPI server, the presence of the separate SYMAPI server and the lack of direct connection to the arrays strongly suggest a remote deployment.

D . Local: In a local deployment, the Unisphere server is typically installed on the same host as Solutions Enabler, which has direct connectivity to the storage arrays.

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

Dell Unisphere for PowerMax 10.0.0 Installation Guide: This guide provides detailed information about the different Unisphere deployment options, including local, remote, and embedded. It also includes diagrams and explanations of each deployment scenario. You can find this document on the Dell Support website by searching for 'Unisphere for PowerMax Installation Guide.'

Dell PowerMax Family: Essentials and Best Practices Guide: This guide offers a general overview of PowerMax systems and their management using Unisphere. It may provide context for understanding the different deployment options.