Dell EMC Dell PowerMax Operate v.2 D-PVM-OE-01 Exam Practice Test

Answer : B

Step by Step Comprehensive Detailed

In PowerMaxOS 5978, the largest TDEV (Thin Device) that can be created is 64 TB. This represents the maximum size for a single, thinly provisioned storage volume on a PowerMax array running that version of the operating system.

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 features and capabilities, including information about storage device sizes and limits.

Dell Solutions Enabler 10.0.0 CLI User Guide: This guide might contain details about the maximum size of TDEVs that can be created using SYMCLI commands.

Topic 2,

SIMULATION

Answer : D

Step by Step Comprehensive Detailed

The Dell VSI (Virtual Storage Integrator) vSphere plug-in is a tool that integrates Dell storage management capabilities into the VMware vSphere environment. It allows administrators to manage storage directly from the vSphere client. Within the 'Configure Storage' section of the VSI plug-in, you can manage:

Snapshots: The plug-in allows you to create, delete, and restore snapshots of virtual machines' storage volumes. This provides a convenient way to protect data and revert to previous states if needed.

Why other options are incorrect:

A . Remote replication: While PowerMax supports remote replication (SRDF), this is typically managed through Unisphere or Solutions Enabler, not the VSI plug-in.

B . Port flags: Port configurations are usually handled through Unisphere or Solutions Enabler.

C . Access control: Access control and security settings are typically managed through Unisphere or other security tools.

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

Dell PowerMax and VMware vSphere Configuration Guide: This guide provides detailed information about the Dell VSI vSphere plug-in and its functionalities, including snapshot management. You can find this document on the Dell Support website by searching for 'PowerMax and VMware vSphere Configuration Guide.'

Dell VSI for VMware vSphere User Guide: This guide specifically focuses on the VSI plug-in and its features, including storage configuration options.

Answer : C

Step by Step Comprehensive Detailed

Before performing an SRDF/S (synchronous) Restore operation, it is crucial to stop all host I/O activity to both the R1 (source) and R2 (target) devices. This ensures data consistency and prevents potential data loss or corruption during the restore process.

Here's why:

Data Integrity: An SRDF/S Restore operation involves copying data from the R1 device to the R2 device, overwriting any existing data on R2. If hosts are actively accessing and modifying data on either device during this process, it can lead to inconsistencies and data integrity issues.

Synchronization: SRDF/S maintains real-time synchronization between the R1 and R2 devices. 1 Performing a Restore operation while hosts are writing data can disrupt this synchronization and lead to unpredictable results.

Why other options are incorrect:

A . Continue accessing the R1 devices. Stop accessing the R2 devices: This would leave R1 vulnerable to data inconsistencies.

B . Stop accessing the R1 devices. Continue accessing the R2 devices: This would make R2 susceptible to data loss or corruption.

D . Continue accessing the R1 and R2 devices: This is the most dangerous option, as it would likely lead to data integrity issues.

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

Dell Solutions Enabler 10.0.0 SRDF Family CLI User Guide: This guide provides detailed information about SRDF operations, including Restore. It emphasizes the importance of halting host I/O before performing such operations to ensure data consistency. You can find this document on the Dell Support website by searching for 'Solutions Enabler SRDF Family CLI User Guide.'

Dell PowerMax Family: Essentials and Best Practices Guide: This guide may offer general information about SRDF management and best practices, which would include recommendations for performing operations like Restore safely.

Answer : A, E

Step by Step Comprehensive Detailed

Non-Disruptive Migration (NDM) is a feature in PowerMax that allows you to migrate data between storage arrays without any downtime or disruption to host applications. During NDM, SRDF (Symmetrix Remote Data Facility) is used to replicate data between the source and target arrays. Here are the configuration rules that apply to SRDF groups and connections during NDM:

A . The source and target arrays are at most one hop away from the control host: The control host, which manages the NDM process, must have direct connectivity to both the source and target arrays. This ensures efficient communication and control during the migration.

E . DM RDF groups are configured with a minimum of one path: SRDF groups used for NDM (DM RDF groups) must have at least one active path between the source and target arrays. This ensures that data can be replicated continuously during the migration.

Why other options are incorrect:

B . Two DM RDF groups are created per SG migration session: This is not a strict requirement. The number of DM RDF groups may vary depending on the configuration and the specific NDM operation.

C . RF and RE ports are supported, with RF ports being selected if both types are available: While RF and RE ports are supported for SRDF, there's no specific preference for RF ports during NDM. The choice of ports depends on the overall network configuration and availability.

D . A single array cannot have multiple DM RDF groups: An array can have multiple DM RDF groups if needed for different NDM operations or configurations.

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 NDM and its requirements, including information about SRDF configuration.

Dell Solutions Enabler 10.0.0 CLI User Guide: This guide provides detailed information about SRDF commands and configuration options, which are relevant for NDM operations.

Answer : D

Step by Step Comprehensive Detailed

In TimeFinder SnapVX, snapshots of a source volume are assigned generation numbers. These numbers indicate the order in which the snapshots were created. The first snapshot taken has a generation number of 0, the second has 1, and so on.

In this case, four snapshots were created at different times:

8:00 AM (Generation 0)

10:00 AM (Generation 1)

12:00 PM (Generation 2)

2:00 PM (Generation 3)

Therefore, the snapshot created at 2:00 PM has a generation number of 3.

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 how generation numbers are assigned to snapshots. You can find this document on the Dell Support website by searching for 'Solutions Enabler TimeFinder SnapVX CLI User Guide.'

Answer : A

Step by Step Comprehensive Detailed

TimeFinder SnapVX is a snapshot technology in PowerMax that allows you to create point-in-time copies of data. When using SnapVX, you can link target volumes to a snapshot to create writable copies of the data at that specific point in time.

The maximum number of target volumes that can be linked to a single snapshot on a source volume is 255. This limitation ensures efficient management and performance of the SnapVX snapshots and linked targets.

Why other options are incorrect:

B . 256, C. 512, D. 1024: These numbers exceed the maximum limit of linked targets per snapshot.

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 limitations, including the maximum number of linked targets per snapshot. You can find this document on the Dell Support website by searching for 'Solutions Enabler TimeFinder SnapVX CLI User Guide.'

Dell PowerMax Family: Essentials and Best Practices Guide: This guide offers a comprehensive overview of PowerMax technologies, including SnapVX. It may provide context for understanding the limitations and best practices for using SnapVX snapshots and linked targets.

Answer : A

You want a detailed, step-by-step guide on how to add three 100 GB volumes to an existing host and change the service level of the associated storage group from Gold to Platinum on a PowerMax array, using the Unisphere for PowerMax interface shown in the image.

Here's a comprehensive guide, broken down into manageable steps:

Phase 1: Provisioning the New Volumes

Step 1: Log in to Unisphere for PowerMax

Open your web browser and enter the URL for your Unisphere for PowerMax management interface.

Log in with your administrator credentials.

Step 2: Navigate to Storage Groups

In the left-hand navigation pane, click on Storage to expand the storage management section.

Click on Storage Groups under the Storage section. This will display a list of existing storage groups on your PowerMax array.

Step 3: Locate the Target Storage Group

Identify the storage group that currently contains the host's existing two 100 GB volumes.

Tip: You can find this by:

Looking at the 'Hosts' tab within each storage group's details. It will list the hosts connected to that storage group.

If you know the host's name, you might be able to search for it using the Unisphere search bar (if available).

Step 4: Initiate Adding Volumes

Once you've found the correct storage group, select it by clicking on its name.

Look for a button or option related to adding volumes. The exact wording might vary slightly depending on your Unisphere version, but it could be:

'Add to Storage Group'

'+' (a plus icon, which often signifies adding something)

'Add Volumes'

Click this button to start the process of adding new volumes to the storage group.

Step 5: Configure Volume Details

A new window or panel will appear, allowing you to specify the characteristics of the new volumes.

Select 'Create new volumes'

Number of Volumes: Enter 3 in the field for the number of volumes.

Capacity: Enter 100 in the field for the capacity of each volume. Make sure the unit is set to GB.

Volume Name (Optional): You can give the volumes a specific name or prefix, or you can let Unisphere auto-generate names.

Service Level: Since the final goal is to move the entire Storage Group to platinum, you can either set this to platinum now or change it for the whole group later.

Other Settings: Review any other available settings (e.g., thin provisioning, data reduction). In most cases, the default settings should be fine, but adjust them if needed based on your environment's best practices.

Step 6: Execute Volume Creation

After you've configured all the volume settings, review them carefully to make sure they are correct.

Click the button to execute the operation. This button might be labeled:

'Run Now'

'OK'

'Finish'

'Apply'

Unisphere will start creating the new volumes. This might take a few moments.

Phase 2: Changing the Storage Group's Service Level

Step 7: Navigate Back to Storage Groups

Once the volume creation is complete, go back to the list of storage groups. You can usually do this by clicking 'Storage Groups' in the left-hand navigation pane again.

Step 8: Select the Target Storage Group

Find the same storage group you worked with in Phase 1 (the one containing the host's volumes).

Click on the storage group's name to open its properties.

Step 9: Modify the Service Level

Look for a setting related to the 'Service Level.' It might be a dropdown menu, a field you can edit, or a link to a separate settings page.

Change the Service Level from Gold to Platinum.

Step 10: Save the Changes

Click the button to save the changes to the storage group's service level. This button might be labeled:

'Apply'

'Save'

'OK'

Phase 3: Host-Side Configuration

Step 11: Rescan for New Storage on the Host

The host needs to be made aware of the newly provisioned storage. The exact process for this depends on the host's operating system:

Windows:

Open Disk Management (diskmgmt.msc).

Go to Action > Rescan Disks.

Linux:

Identify the SCSI host bus numbers (e.g., ls /sys/class/scsi_host).

Use the command echo '- - -' > /sys/class/scsi_host/hostX/scan, replacing hostX with the appropriate host bus number.

You might also be able to use tools like rescan-scsi-bus.sh.

VMware ESXi:

In the vSphere Client, select the host.

Go to Configure > Storage Adapters.

Select the relevant storage adapter (e.g., your HBA).

Click Rescan Storage.

Step 12: Initialize, Partition and Mount (if needed):

Once the host detects the new volumes, you'll need to initialize them, create partitions, format them with a filesystem, and mount them, depending on your operating system and how you intend to use the storage. This is done using the host's operating system tools.

Phase 4: Verification and Monitoring

Step 13: Verify in Unisphere

Go back to the storage group in Unisphere and check the 'Volumes' tab. You should see the three new 100 GB volumes listed along with the original two, and they should all have the 'Platinum' service level.

Step 14: Verify on the Host

Confirm that the host can see and access the new volumes.

Step 15: Monitor Performance

After making these changes, monitor the performance of the storage group and the application using Unisphere's performance monitoring tools. Ensure that the Platinum service level is meeting your application's requirements