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EMC D-PVM-OE-01 Exam Syllabus Topics:
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NEW QUESTION # 15
What is the default size of a Gatekeeper on a PowerMax array?
- A. 3 cylinder
- B. 6 KB
- C. 3 MB
- D. 6 cylinder
Answer: A
NEW QUESTION # 16
How can TimeFinder SnapVX snapshots be scheduled?
- A. With Unisphere for PowerMax, using the Protect Storage Group Wizard
- B. With Unisphere for PowerMax, under the Jobs List details
- C. With SYMCLI, using the symsnapvx set ttl command
- D. With SYMCLI, using the symsnapvx establish command
Answer: A
NEW QUESTION # 17
Which symrdf flag and operation allows new devices to be added to an active SRDF/A session without suspending the session?
- A. establish with the movepair operation
- B. cons_exempt with the modifygrp operation
- C. establish with the resume operation
- D. cons_exempt with the movepair operation
Answer: D
NEW QUESTION # 18
Refer to the exhibit.
What is the topology shown1?
- A. Cascaded SRDF
- B. SRDF/Star
- C. Concurrent SRDF
- D. SRDF/Metro
Answer: A
Explanation:
Step by Step Comprehensive Detailed Explanation:
The topology shown in the exhibit depictsCascaded SRDF. This SRDF configuration involves three storage arrays (or sites) connected in a chained or cascaded manner.
Here's how it works:
* Primary Site (R1):The production host is connected to the primary storage array (R1).
* Intermediate Site (R2):The primary array (R1) synchronously replicates data to an intermediate array (R2).
* Remote Site (R2):The intermediate array (R2) then asynchronously replicates data to a remote array (also labeled R2 in the diagram).
This cascading setup provides a multi-hop disaster recovery solution, where data is first replicated synchronously to a nearby site for high availability and then asynchronously replicated to a further remote site for disaster recovery.
Why other options are incorrect:
* B. SRDF/Star:SRDF/Star involves a central array replicating to multiple remote arrays in a star-like pattern.
* C. SRDF/Metro:SRDF/Metro is designed for synchronous replication over short distances, typically within a metropolitan area.
* D. Concurrent SRDF:Concurrent SRDF allows multiple SRDF relationships to exist simultaneously for the same device.
References 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 different SRDF configurations, including Cascaded SRDF. 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 offers a comprehensive overview of SRDF and its functionalities, including various topologies and use cases.
NEW QUESTION # 19
Place the steps in the correct order for performing a Non-Disruptive Migration
Answer:
Explanation:
Explanation:
* Set up the migration environment to migrate applications from the source array to the target array.
* Examine the specific storage for the applications on the source array and automatically provision equivalent storage on the target array.
* Initiate data synchronization from the source to the target and cutover to make source array paths inactive so target array services all host I/O.
* Commit the necessary changes after the source to target data synchronization is complete and all application data has been migrated to the target.
* Remove the configured array-to-array connectivity for the data migration pathway on both storage arrays.
Correct Order:
* Set up the migration environment to migrate applications from the source array to the target array.
* Why:This is the initial setup phase, where you configure the necessary settings on both the source and target arrays to enable the migration. This involves actions like:
* Verifying compatibility between the source and target arrays.
* Ensuring that the required licenses are in place (e.g., NDM license).
* Configuring network connectivity (FC or iSCSI) for data transfer between the arrays.
* Examine the specific storage for the applications on the source array and automatically provision equivalent storage on the target array.
* Why:Before migrating data, you need to ensure that the target array has the appropriate storage capacity and configuration to host the applications.
* How:NDM can often automatically provision equivalent storage on the target based on the source configuration. This includes creating storage groups, volumes, and masking views that mirror the source.
* Initiate data synchronization from the source to the target and cutover to make source array paths inactive so target array services all host I/O.
* Why:This is the core of the migration process. Data is copied from the source to the target while the application continues to run. Cutover is the final step where I/O is redirected to the target array.
* How:
* Synchronization:Data is copied in the background.
* Cutover:Once synchronization is complete, a brief cutover is performed. In a well-planned NDM, this cutover is designed to be within the I/O timeout limits of most applications.
* Commit the necessary changes after the source to target data synchronization is complete and all application data has been migrated to the target.
* Why:This step finalizes the migration and makes it permanent.
* What it involves:The migration session is acknowledged and the configuration is finalized on the target array.
* Remove the configured array-to-array connectivity for the data migration pathway on both storage arrays.
* Why:After the migration is complete, the temporary connections used for data transfer between the arrays should be removed to free up resources and maintain a clean configuration.
* What it involves:This typically means removing the FC zones or iSCSI settings that were configured specifically for the NDM process.
NEW QUESTION # 20
What are the Compliance levels for Storage Groups in Unisphere for PowerMax?
- A. Critical, Marginal, Stable, and No Status
- B. Fatal, Critical, Stable, and No Status
- C. Critical, Marginal, Warning, and No Status
- D. Fatal, Critical, Warning, and No Status
Answer: A
NEW QUESTION # 21
Which services are active after a Unisphere for PowerMax installation on a Microsoft Windows host?
- A. SMASandSTP
- B. SYMAPI and symrdfg
- C. SMASandGNS
- D. SMAS and smasdb
Answer: D
Explanation:
Step by Step Comprehensive Detailed Explanation:
When you install Unisphere for PowerMax on a Microsoft Windows host, it installs several services necessary for its operation. The two primary services that are active after installation are:
* SMAS (Storage Management Agent Service):This service is responsible for communication between the Unisphere server and the PowerMax storage array. It handles tasks like collecting data, sending commands, and receiving alerts from the array.
* smasdb:This service manages the local database used by Unisphere for storing configuration information, performance data, and other relevant information.
Why other options are incorrect:
* A. SYMAPI and symrdfg:SYMAPI is a command-line interface tool, not a service. symrdfg is a service related to SRDF (Symmetrix Remote Data Facility) replication, which may not be active if SRDF is not configured.
* B. SMASandGNS:GNS is not a standard service associated with Unisphere for PowerMax.
* C. SMASandSTP:STP is not a standard service associated with Unisphere for PowerMax.
References 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 instructions for installing Unisphere for PowerMax on different operating systems, including Windows. It also lists the services that are installed and their functions. You can find this document on the Dell Support website by searching for "Unisphere for PowerMax Installation Guide."
* Dell Unisphere for PowerMax 10.0.0 Online Help:The online help documentation for Unisphere may also provide information about the services it uses and their roles.
NEW QUESTION # 22
Which Threshold levels must be set when creating customized threshold alerts in Unisphere for PowerMax?
- A. Stable, Marginal, and Critical
- B. Stable, Critical, and Fatal
- C. Warning, Marginal, and Critical
- D. Warning, Critical, and Fatal
Answer: D
NEW QUESTION # 23
A Storage Group is serving host read/write I/O. The Storage Administrator started an MDM migration and ran a symdm sync -stop command, putting the migration in a CutoverNoSync migration state Where does the customer data in the Storage Group reside?
- A. Only on the source array
- B. Only the target array
- C. On both the source and the target array
Answer: C
Explanation:
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.
NEW QUESTION # 24
A PowerMax systems administrator has created three storage groups with the diamond, gold, and silver service levels. How does the system ensure the service level response times are met during heavy workloads?
- A. Service levels are identical on All Flash systems
- B. By throttling the back-end IOs
- C. By allocating more device cache slots to Diamond
- D. By throttling the host front-end IOs
Answer: D
NEW QUESTION # 25
A systems administrator asks whether non-disruptive migration (NDM) is supported between their VMAX All Flash arrays. The arrays are located 800 km apart.
What information should be provided to the administrator?
- A. NDM is only supported if the source array is running HYPERMAX OS 5977
- B. NDM is not supported between the arrays
- C. NDM is only supported if the target array is running PowerMax OS 5978
- D. NDM is supported between the arrays
Answer: D
NEW QUESTION # 26
You have just presented storage to an ESXi server and want to rescan the storage adapter to ensure the server can see the new volume Based on recommended best practices, what is the preferred method to perform this task?
- A. Run the command from a non-cluster host using the ESX CLI
- B. Run the command from the ESXi server with the ESX CLI enabled
- C. Use the vSphere VSI plugin to rescan the entire cluster
- D. Use the vSphere Client to perform the rescan of the host
Answer: D
NEW QUESTION # 27
On a PowerMax array, what is the default Dynamic I/O distribution mode setting when a Storage Group is associated with Host I/O Limits'?
- A. Always
- B. Balanced
- C. OnFailure
- D. Never
Answer: D
Explanation:
Host I/O Limits in PowerMax allow you to control the maximum IOPS (Input/Output Operations Per Second) or bandwidth that a storage group can consume. This helps prevent performance issues caused by one application or workload monopolizing resources.
When you associate Host I/O Limits with a Storage Group, the default Dynamic I/O distribution mode is set to Never.
* Never:This means that the I/O limits are statically distributed across the directors in the associated masking view. If a director fails, its allocated portion of the I/O limit is lost. This is the most conservative setting, as it ensures that the I/O limits are strictly enforced even in the event of a director failure.
You can change this setting toBalancedorAlwaysif you need more dynamic distribution of I/O limits.
References 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 Host I/O Limits, including the different distribution modes and their benefits. You can find this document on the Dell Support website by searching for "PowerMax and VMware vSphere Configuration Guide."
* Dell Solutions Enabler 10.0.0 CLI User Guide:This guide provides information on how to set Host I
/O Limits using SYMCLI commands, including the -dynamic option for specifying the distribution mode.
NEW QUESTION # 28
A PowerMax array has been added to the environment. As part of the configuration, a weekly backup is done every Sunday during the 8:00 AM hour. The load for all components during the backup window should not be in system-level compliance calculations.
Using the simulator, set a recurring exclusion window at the system level on the array for the backup window.
Answer:
Explanation:
See the explanation for step by step solution.
Explanation:
Okay, I understand. We need to configure a recurring exclusion window in the Unisphere for PowerMax simulator to exclude performance load during a weekly backup that occurs every Sunday from 8:00 AM to 9:
00 AM. This exclusion will prevent the backup load from affecting system-level compliance calculations.
Here's a step-by-step guide on how to do this, based on typical Unisphere functionality:
Steps:
1. Launch the Simulator and Navigate to the System Settings
* Open Unisphere for PowerMax in your web browser.
* Log in to the simulator (you should already be logged in with the array SID 1762 selected, based on the image).
* In the left-hand navigation pane, locate the settings or configuration section. The exact location might vary slightly, but it's often found under:
* Home>System Settings
* Settings(an icon representing settings, like a gear)
* Admin>System
* In this instance, click thegearicon on the top right corner of the Unisphere interface.
2. Find the Exclusion Window Settings
* Within the system settings, look for a section related to performance monitoring, metrics, or thresholds.
* Within this section, search for an option to configure "Exclusion Windows," "Scheduled Exclusions," or something similar. The exact name may vary.
3. Create a New Exclusion Window
* Click on a button or link to create a new exclusion window. This might be labeled:
* "Create"
* "Add"
* "+"(a plus icon)
* A new window or panel will appear, allowing you to configure the exclusion window settings.
4. Configure the Exclusion Window Settings
* Name (Optional):You can give the exclusion window a descriptive name, such as "Weekly Backup Exclusion."
* Type:Select"Recurring"or"Repeating"as the exclusion window type.
* Schedule:
* Day of the Week:Select"Sunday".
* Start Time:Set the start time to 08:00 (or 8:00 AM). Make sure the time is in 24-hour format or that you correctly select AM if using 12-hour format.
* End Time:Set the end time to 09:00 (or 9:00 AM).
* Scope/Target:Since we want this exclusion to apply at the system level, make sure the scope is set to
"System"or the entire array (SID 1762 in this case). You might not need to explicitly select this if system-level is the default.
* Components/Metrics:In some Unisphere versions, you can choose which components or metrics to exclude. In our case, we want to exclude the load for "all components." If there's an option to select components, either choose "All" or leave it at the default (which likely includes all components).
5. Save the Exclusion Window
* After configuring all the settings, review them carefully to make sure they are correct.
* Click the button to save the exclusion window. This might be labeled:
* "Create"
* "Save"
* "OK"
* "Apply"
6. Verify Exclusion Window Creation (Optional)
* After the exclusion window is created, you can usually verify its settings in the exclusion window list.
* You should see the new exclusion window listed with the correct schedule (Sunday, 8:00 AM - 9:00 AM) and scope (system level).
Topic2, Multiple Choice Questions
NEW QUESTION # 29
The Reserved Capacity for a PowerMax Storage Resource Pool (SRP) has been set to 15%. A TimeFinder SnapVX snapshot has been created for a Storage Group containing 10 devices. An application is actively performing read and write I/Os to these devices. The snapshot is linked to the target in Copy mode. Allocation for the SRP reaches 85%.
What will happen to the copy process?
- A. Copy to target will continue and complete
- B. Array increases compression to free up space
- C. Copy to target will fail
- D. Copy to target will halt
Answer: D
NEW QUESTION # 30
What are the main options used to complete a configuration change using the synconfigure command?
- A. preview query, commit
- B. preview query, reserve
- C. preview, prepare, commit
- D. preview, prepare, reserve
Answer: C
NEW QUESTION # 31
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