試験合格保証付きのStorage Administrator D-PVM-OE-01試験問題集
EMC D-PVM-OE-01日常練習試験は2025年最新のに更新された156問あります
EMC D-PVM-OE-01 認定試験の出題範囲：
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質問 # 85
What is the performance metric for the read-to-write ratio of workloads on a specific logical block address?
- A. Prefetch
- B. Workload type
- C. Workload clustering
- D. Data spanning
正解：B
質問 # 86
An SRDF/Metro pair was created with vWitness After a network outage, the administrator discovers that the SRDF pair is in an ActiveBias state What is the correct sequence of events to bring the SRDF pair into an ActiveActive state?
正解：
解説：
質問 # 87
Which emulations can be added through the SYMCLI?
- A. EDS, FA, and SE
- B. RE, RF, and SE
- C. RF, SE, and DX
- D. IM, DX, and RF
正解：B
質問 # 88
An administrator is using the Workload Planner feature in Unisphere for PowerMax How does the Planner calculate if the Storage Group workload is stable?
- A. Both calculated values are within the SL-defined response time.
- B. Both calculated values are within a 10-15% threshold of the SL-defined response time
- C. One of the calculated values is within 10-20% of the SL-defined response time
- D. One of the calculated values remains within the SL-defined response time
正解：A
解説：
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 how the 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. If boththe 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.
質問 # 89
Data is written on a source track and the original data needs to be preserved for a snapshot. Which technology does TimeFinder SnapVX use to prevent a new write from being demoted to a lower tier?
- A. NoCopy mode
- B. Copy-on-write
- C. Copy mode
- D. Redirect-on-write
正解：B
質問 # 90
Your organization is preparing for a major software update, and it is crucial to ensure data integrity during this process. As a system administrator, create a secure snapshot named "Stor1" from the storage group
"StorGroup1." The snapshot cannot be deleted for two days to safeguard against any potential data loss during the update.
Using the simulator, complete the operation.
正解：
解説：
See the explanation for step by step solution.
Explanation:
We need to create a secure snapshot named "Stor1" from the storage group "StorGroup1" in the Unisphere for PowerMax simulator, and the snapshot should be protected from deletion for two days.
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 Storage Groups Section
* 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).
* In the left-hand navigation pane, click onStorageand then selectStorage Groups.
2. Locate and Select "StorGroup1"
* In the Storage Groups view, you'll see a list of all storage groups on the array.
* Find the storage group named "StorGroup1".
* Click on the name "StorGroup1" to open its details view.
3. Initiate the Snapshot Creation Process
* Within the "StorGroup1" details view, look for an option related to creating snapshots or protecting the storage group. This might be a button labeled:
* "Protect"
* "Create Snapshot"
* "SnapVX"
* Or an icon representing snapshot creation.
* Click the appropriate button or icon to start the snapshot creation process.
4. Configure Snapshot Settings
* A new window or panel will appear, allowing you to configure the snapshot settings.
* Snapshot Name:Enter Stor1 as the snapshot name.
* Snapshot Technology:SelectSnapVX(or a similar option) as the snapshot technology.
* Secure Snapshot:This is crucial. Look for an option labeled "Secure Snapshot," "Enable Secure Snap,"
"Secure Snap," or something similar.Check this option.
* Retention/Expiration:You need to set the retention period for the secure snapshot. This will define how long the snapshot cannot be deleted. There are usually a few ways to configure this:
* Expiration Time:Set an explicit expiration date and time that is two days from now.
* Retention Period:Specify a retention period of 2 days.
* No Expiry:This option is not what we want here. We want the snap to be secure for 2 days.
* Choose the appropriate option to make the snapshot undeletable for two days.
* Other Settings:Review any other available settings. You might be able to choose between creating a new snapshot or linking to an existing one. Select the option to create anew snapshot.
5. Create the Snapshot
* After configuring all the snapshot settings, review them carefully to ensure they are correct.
* Click the button to create the snapshot. This button might be labeled:
* "Run Now"
* "OK"
* "Create"
* "Finish"
6. Verify Snapshot Creation (Optional)
* After the snapshot creation operation completes, you can verify that the snapshot was created successfully:
* Go back to the "StorGroup1" details view.
* Look for a tab or section related to snapshots (e.g., "Snapshots," "TimeFinder," "Local Replication").
* You should see the "Stor1" snapshot listed there, and its status should indicate that it's a secure snapshot with the correct retention period (2 days).
質問 # 91
What are two characteristics of a SnapVX Linked Target?
- A. They can be made secure
- B. They are read writable (R/W).
- C. They cannot send data to SRDF
- D. They support a maximum of 1024 snaps per volume
正解：B、C
解説：
Step by Step Comprehensive Detailed Explanation:
* SnapVX Linked Targets:SnapVX is a snapshot technology used in Dell PowerMax storage arrays. A linked target is a volume that provides read/write access to a specific point-in-time copy (snapshot) of a source volume.
* Read/Write Access:Unlike traditional snapshots, which are typically read-only, SnapVX linked targets allow modifications. This makes them suitable for use cases like testing, development, and data analysis where changes need to be made to a copy of the data without affecting the original source.
* Secure Snapshots:SnapVX offers the capability to create "secure snapshots." These snapshots are write-protected and prevent any modifications or deletion, ensuring data integrity and protection against accidental or malicious changes.
Why other options are incorrect:
* B. They support a maximum of 1024 snaps per volume:This is partially correct. While a source volume can have up to 1024 snapshots, this limit includes all types of snapshots (manual, automated, and legacy), not just linked targets.
* B. They cannot send data to SRDF:This is incorrect. SnapVX linked targets can participate in SRDF (Symmetrix Remote Data Facility) replication, allowing for disaster recovery and data mobility.
References 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 commands, including how to create, link, and manage snapshots. It confirms the read/write capability of linked targets and the ability to create secure snapshots. 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 highlights the benefits of SnapVX linked targets for various use cases. You can find this document on the Dell Support website by searching for
"PowerMax Family Essentials and Best Practices Guide."
質問 # 92
A systems administrator plans to use Non-Disruptive Migration (NDM) to migrate data from a VMAX3 running HYPERMAX OS 5977 to a PowerMax running PowerMaxOS 5978. Which NDM mode will be used?
- A. Asynchronous
- B. Metro-based
- C. Adaptive Copy
- D. Pass-through
正解：B
質問 # 93
A PowerMax 8000 was initially ordered as a multi-engine system. How does this system differ from a PowerMax 8000 that was initially ordered as a single-engine even if it is upgraded to a multi-engine system at a later time?
- A. Each director has one more NVMe Flash module
- B. Each director has one more Universal FE slot
- C. Each director has the compression/deduplication module in Slot 9
- D. Each director has twice the backend connectivity
正解：B
質問 # 94
What takes place during an SRDF Restore operation?
- A. Resumes normal SRDF mirroring and host access
- B. Changes made to the R1 are propagated to the R2. Changes made to the R2 are discarded
- C. Changes made to the R2 are propagated to the R1 Changes made to the R1 are discarded
- D. Enables access to both the R1 and R2 devices for their hosts
正解：B
解説：
Step by Step Comprehensive Detailed Explanation:
In SRDF (Symmetrix Remote Data Facility), a "Restore" operation is used to resynchronize the source (R1) and target (R2) devices after a situation where the target device might have been modifiedindependently. This typically occurs after a failover scenario where the target device becomes the primary and undergoes changes.
During an SRDF Restore operation:
* R2 Changes Discarded:Any changes made to the target (R2) device since the last synchronization are discarded.
* R1 Changes Propagated:The current data on the source (R1) device is copied over to the target (R2), overwriting any existing data on the target.
This effectively restores the target device to a state consistent with the source device, ensuring data integrity and consistency.
Why other options are incorrect:
* B. Resumes normal SRDF mirroring and host access:While a Restore operation can be part of the failback process, it's not the only step involved. Failback might involve additional actions like reversing replication direction and restoring host access.
* C. Changes made to the R2 are propagated to the R1. Changes made to the R1 are discarded:This describes an "Update" operation, not a "Restore."
* D. Enables access to both the R1 and R2 devices for their hosts:This describes a "Split" operation, where both devices are made accessible independently.
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 SRDF commands and operations, including the symrdf restore command. 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 disaster recovery scenarios and the use of the
"Restore" operation.
質問 # 95
When using TimeFinder SnapVX, what is the maximum number of linked targets allowed per source?
- A. 0
- B. 1
- C. 2
- D. 3
正解：B
質問 # 96
Where are the Host l/Os directed to when the Storage Group is in a Non-Disruptive Migration CutoverReady state?
- A. Held in host cache
- B. Source and target arrays
- C. Target array only
- D. Source array only
正解：D
質問 # 97
Which VMAX All Flash software package includes Non-Disruptive Migration?
- A. FX
- B. AppSync Starter
- C. Pro
- D. Essentials
正解：A
解説：
https://visiondatacenter.com/products/DELLEMC_VMAX450F/vmax-software-datasheet.pdf
質問 # 98
A systems administrator plans to use Non-Disruptive Migration (NDM) to migrate data from a VMAX array running Enginuity 5876 to a PowerMax running PowerMaxOS 5978 Which NDM mode will be used?
- A. Pass-through
- B. Asynchronous
- C. Adaptive Copy
- D. Metro-based
正解：A
質問 # 99
What are the main options used to complete a configuration change using the synconfigure command?
- A. preview, prepare, reserve
- B. preview query, commit
- C. preview, prepare, commit
- D. preview query, reserve
正解：C
質問 # 100
What is the correct sequence of steps to obtain PowerMax licenses and ensure the PowerMax is configured to allow the licensed features to work properly?
正解：
解説：
質問 # 101
What is a feature unique to the PowerMax 8500 compared to the PowerMax 2500?
- A. Mainframe Connectivity
- B. InfiniBand Switches
- C. Persistent Memory
- D. Storage Class Memory
正解：B
解説：
Step by Step Comprehensive Detailed Explanation:
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.
References 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.
質問 # 102
How does Solutions Enabler use Gatekeepers to pass commands to the PowerMax array?
- A. Automatically creates the Gatekeeper and locks the device Processes the system commands; unlocks and deletes the Gatekeeper.
- B. Automatically creates the Gatekeeper and unlocks the device. Processes the system commands; locks and deletes the Gatekeeper
- C. Obtains the Gatekeeper and locks the device. Processes the system commands and unlocks the device
- D. Obtains the Gatekeeper and unlocks the device Processes the system commands and locks the device.
正解：C
質問 # 103
Which tasks can a storage administrator manage from the Data Protection menu in the Unisphere for PowerMax?
- A. Configure Data Protection for z systems
- B. Convert front-end ports to SRDF ports
- C. Configure and manage SRDF groups
- D. Review the audit log for unwanted logins
正解：C
解説：
Step by Step Comprehensive Detailed Explanation:
The "Data Protection" menu in Unisphere for PowerMax provides a centralized location for managing various data protection features and functionalities. Specifically, it allows storage administrators to:
* Configure and manage SRDF groups:SRDF (Symmetrix Remote Data Facility) is a key technology for disaster recovery and data replication in PowerMax. The Data Protection menu enables administrators to create, modify, and monitor SRDF groups, establish replication relationships between devices, and control replication settings.
Why other options are incorrect:
* A. Convert front-end ports to SRDF ports:This is typically done through the "System > Hardware" or "Connectivity" sections of Unisphere, where port configurations are managed.
* C. Configure Data Protection for z Systems:While PowerMax supports mainframe environments, the specific configuration for z Systems might involve specialized tools or interfaces.
* D. Review the audit log for unwanted logins:Audit logs and security-related events are usually found in the "Monitoring" or "Security" sections of Unisphere.
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 a detailed explanation of the functionalities available in each menu, including the Data Protection menu. You can access this help within Unisphere itself or on the Dell Support website.
* Dell PowerMax Family: Essentials and Best Practices Guide:This guide offers a general overview of data protection features in PowerMax and how they are managed through Unisphere.
質問 # 104
Refer to the exhibit.
What is the topology shown1?
- A. Concurrent SRDF
- B. SRDF/Metro
- C. Cascaded SRDF
- D. SRDF/Star
正解：C
解説：
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.
質問 # 105
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