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EMC D-PVM-OE-01 認定試験の出題範囲：
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質問 # 31
Where are the Host l/Os directed to when the Storage Group is in a Non-Disruptive Migration CutoverReady state?
- A. Target array only
- B. Source array only
- C. Held in host cache
- D. Source and target arrays
正解：B
質問 # 32
Where is the automatic backup feature for the Solutions Enabler Group Name Services database set?
- A. SYMAPI options file
- B. Daemon options file
- C. SYMAPI variable
- D. SYMCLI environment variable
正解：C
質問 # 33
What would the RDF device and Link states be after an SRDF Update operation?
- A. R1=RW Link=NR. R2=RW
- B. R1=RW Link=RW; R2=WD
- C. R1=WD Link=RW. R2=RW
- D. R1=WD Link=NR R2=RW
正解：D
質問 # 34
A systems administrator no longer needs the remote replica of a local device. Which step can be performed first in order to perform the deletepair function?
- A. Change the pair state to "NR"
- B. Suspend the SRDF link
- C. Change the type of the group to "regular
- D. Split the SRDF link
正解：B
質問 # 35
Place the steps in the correct order to create clone copy sessions of device groups.
正解：
解説：
Explanation:
Here's the correct sequence of steps along with explanations:
Correct Order:
* Select Data Protection > Device Groups from the navigation pane.
* Why:This is the starting point within Unisphere for PowerMax. You need to navigate to the section where device groups are managed and where TimeFinder operations are initiated.
* Select a PowerMax array.
* Why:In an environment with multiple PowerMax arrays, you must specify the array on which you want to create the clone copy sessions.
* Select a group and click Create Pairs.
* Why:You are selecting the specific device group that will be the source for the clone operation and choosing the "Create Pairs" action to initiate the clone session creation process. This implies you are creating a clone from an existing group of devices.
* Select a source type and a target type.
* Why:This step defines the characteristics of the source and target devices for the clone session.
This could involve selecting from different storage groups, specifying thin or thick provisioning, or other relevant settings. Note that in a clone context, the "target type" often refers to how the clone will be linked to the source (e.g., a full copy or a linked target).
* Click Run Now to run the operation.
* Why:After configuring all the settings for the clone session, this action triggers the actual creation of the clone pairs based on the selected source and target types and other parameters.
* Click the TimeFinder Clone tab to view the list of clones.
* Why:Once the operation has been initiated, this is how you would verify that the clone sessions were created successfully and monitor their status.
* Select Data Protection > Device Groups from the navigation pane.
* Select a PowerMax array.
* Select a group and click Create Pairs.
* Select a source type and a target type.
* Click Run Now to run the operation.
* Click the TimeFinder Clone tab to view the list of clones.
質問 # 36
What function does the storsrvd daemon support?
- A. Listens for SYMAPI sessions and management requests
- B. Provides centralized gatekeeper device management
- C. Provides replication consistency protection
- D. Manages Composite Groups and Device Groups
正解：A
解説：
The storsrvd daemon is a critical component of the Solutions Enabler (SYMCLI) software suite used to manage Dell PowerMax and VMAX storage arrays. Its primary function is to:
* Listen for SYMAPI Sessions:It acts as a communication endpoint, listening for incoming SYMAPI sessions from clients or management tools like Unisphere.
* Handle Management Requests:When a client connects, storsrvd receives and processes SYMAPI commands and requests, forwarding them to the appropriate components within Solutions Enabler for execution.
Essentially, storsrvd acts as an intermediary between SYMCLI clients and the storage array, facilitating communication and management operations.
Why other options are incorrect:
* A. Manages Composite Groups and Device Groups:This is handled by other components within Solutions Enabler.
* B. Provides centralized gatekeeper device management:While storsrvd plays a role in device management, it's not the sole component responsible for it.
* C. Provides replication consistency protection:This is a function of SRDF (Symmetrix Remote Data Facility) and related components.
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 information about the architecture and components of Solutions Enabler, including the role of the storsrvd daemon in handling SYMAPI communication. You can find this document on the Dell Support website by searching for "Solutions Enabler CLI User Guide."
質問 # 37
Which command is used to change the CPU resource distribution for SRDF modes?
- A. symconfigure
- B. symcfg
- C. symrdf
- D. symqos
正解：D
質問 # 38
A systems administrator uses the symrdf createpair command to create an R1/R2 pair. Both devices are dynamic SRDF devices.
What is the default mode of operation for the SRDF pair when the Establish operation is performed?
- A. Synchronous
- B. Adaptive Copy Write Pending
- C. Asynchronous
- D. Adaptive Copy Disk
正解：D
質問 # 39
A production PowerMax array has been configured to replicate to a disaster recovery (DR) array using SRDF Adaptive Copy mode. There are occasional bandwidth constraints on the network connecting the two arrays.
These bandwidth constraints prevent the immediate replication of production data.
Where does the new production data accumulate until it can be replicated to the array at the DR site?
- A. Local journal volumes
- B. Local array cache
- C. R1 device
- D. R2 device
正解：B
質問 # 40
A TimeFinder SnapVX snapshot of source volumes has been linked to target volumes. The target volumes are being used for application testing.
What should be done prior to a relink operation?
- A. Stop accessing the source and target volumes
- B. Continue accessing the source and target volumes
- C. Stop accessing the source volumes; continue accessing the target volumes
- D. Continue accessing the source volumes; stop accessing the target volumes
正解：D
質問 # 41
What is the Deduplication Management Object (DMO) used for with PowerMax Deduplication?
- A. Identifies identical data patterns based on the Hash ID
- B. Representation of data in a deduplication relationship
- C. Stores and manages pointers between front-end devices and a single instance of data stored on disk
- D. Inline process using the same data reduction module as the Adaptive Compression Engine
正解：C
質問 # 42
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 # 43
What is the correct sequence of actions performed by a PowerMax when the SRDF failback command is executed?
正解：
解説：
Explanation:
1.write disable R2
2.suspend
3. Merge
4.Resume
5.read/write enable.
質問 # 44
Place the steps to set Host Flags using the Create Host wizard in the correct order
正解：
解説：
Explanation:
Here's the correct sequence of actions, along with explanations:
Correct Order:
* Select the Hosts > Hosts menu option.
* Why:This is the initial navigation step within Unisphere. You need to go to the "Hosts" section where you can manage and configure host connections to the PowerMax array.
* Navigate to the storage array to be configured.
* Why:In an environment with multiple PowerMax arrays, you need to select the specific array for which you want to configure host settings.
* Click the Create button.
* Why:This initiates the "Create Host" wizard, which will guide you through the process of adding a new host and configuring its settings, including the host flags.
* Click the Set Host Flags button to override or enable any port flag settings.
* Why:Within the Create Host wizard, you'll reach a point where you can configure host flags.
Clicking the "Set Host Flags" button allows you to modify these flags.
* Host Flags:These flags are settings that define how the PowerMax array interacts with the host.
They control things like:
* SCSI support:Different variations of SCSI protocols.
* High availability:Features like auto-negotiation of failover.
* Other host-specific behaviors.
* Select the Hosts > Hosts menu option.
* Navigate to the storage array to be configured.
* Click the Create button.
* Click the Set Host Flags button to override or enable any port flag settings.
質問 # 45
What function can a storage administrator enable on the Port Attributes page?
- A. Manage Protocol
- B. Volume Set Addressing
- C. ORS Ceiling
- D. Select Mgt Option
正解：D
質問 # 46
Which units of measure are used to specify the size type when creating volumes in Unisphere?
- A. MB, TB, PB
- B. MB and GB only
- C. Cylinders, MB, GB, TB
- D. Cylinders, GB, TB. PB
正解：D
質問 # 47
What is the maximum capacity per array in a PowerMax 8500?
- A. 8 PBe
- B. 20 PBe
- C. 18 PBe
- D. 24 PBe
正解：D
解説：
Step by Step Comprehensive Detailed Explanation:
The PowerMax 8500 is a high-end storage array designed for enterprise environments with demanding capacity requirements. The maximum capacity per array in a PowerMax 8500 is24 petabytes effective (PBe)
.
This means that after considering data reduction technologies like deduplication and compression, the array can store up to 24 petabytes of usable data.
Why other options are incorrect:
* A. 8 PBe, B. 18 PBe, C. 20 PBe:These values are lower than the actual maximum capacity of the PowerMax 8500.
References and documents of Dell's public documentation for PowerMax Operate v.2:
* Dell PowerMax 8500 Hardware Information Guide:This guide provides detailed technical specifications for the PowerMax 8500, including its maximum capacity. You can find this document on the Dell Support website by searching for "PowerMax 8500 Hardware Information Guide."
* Dell PowerMax Family: Essentials and Best Practices Guide:This guide offers a general overview of the PowerMax family, including the 8500 model and its key features and capabilities.
質問 # 48
A Storage Administrator runs the command:
syradm list -environment -offline
What migration environments are listed?
- A. The environments controlled by and those from the systems reachable by the host performing the command.
- B. Only the environments controlled by the host from where the list command is run.
- C. The environments where the application has been taken offline to perform the cutover.
正解：A
解説：
Step by Step Comprehensive Detailed Explanation:
The syradm list -environment -offline command in Solutions Enabler is used to display information about migration environments that are currently offline.
Here's what it shows:
* Controlled Environments:It lists the migration environments that are directly controlled by the host where the command is executed. These are the environments where the host acts as the primary control point for the migration.
* Reachable Environments:It also lists environments that are reachable from the host executing the command. This includes environments controlled by other hosts that are connected and accessible within the SAN fabric.
This broader scope allows administrators to get a comprehensive view of offline migration environments across their managed systems.
Why other options are incorrect:
* A. The environments where the application has been taken offline to perform the cutover:While offline environments might be associated with cutovers, the command shows all offline environments regardless of their specific stage in the migration process.
* B. Only the environments controlled by the host from where the list command is run:It also includes reachable environments, not just those directly controlled by the host.
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 syradm command and its various options, including the list -environment -offline command for displaying offline migration environments. You can find this document on the Dell Support website by searching for "Solutions Enabler CLI User Guide."
質問 # 49
The customer has successfully completed a Non-Disruptive Migration.
Use the simulator to verify migration sessions and remove the migration environment.
正解：
解説：
See the explanation for step by step solution.
Explanation:
Okay, I understand. The task is to verify the completion of Non-Disruptive Migrations (NDM) and then remove the migration environment using the Unisphere for PowerMax simulator.
Here's a step-by-step guide on how to do this, based on typical Unisphere functionality and the context of the question:
Steps:
1. Launch the Simulator and Navigate to the Migration Section
* Open Unisphere for PowerMax in your web browser.
* Log in to the simulator.
* In the left-hand navigation pane, locate the section related to migrations. This is usually under either:
* Data Mobility
* Migration
* Expand the relevant section and click onMigrations(or a similar option like "Local Migrations" or
"NDM"). This will take you to the view where you can manage Non-Disruptive Migrations.
2. Verify Migration Session Status
* The Migrations view will list all current and past migration sessions.
* Look for the following status indicators to confirm that the migrations have completed successfully:
* Status:The status should typically be "Completed," "Cutover Complete," or a similar status indicating successful completion.
* Progress:If a progress bar or percentage is shown, it should be at 100% or show that all data has been synchronized.
* Important:If any sessions are still in a "Running," "Synchronizing," or other non-completed state, do not proceed with removing the migration environment. Wait for them to complete.
3. Select Completed Migrations for Removal
* Once you've verified that all relevant migration sessions are successfully completed, select the sessions that you want to remove.
* You can usually select sessions by:
* Clicking a checkbox next to each session.
* Clicking on the session itself (if the interface allows it).
4. Remove the Migration Environment
* After selecting the completed migration sessions, look for an action button or menu option to remove them. This might be labeled:
* "Remove"
* "Delete"
* "Cleanup"
* "Remove Session"
* Click the appropriate button to initiate the removal process.
* Confirmation:You will likely be prompted with a confirmation message to make sure you want to remove the selected migration sessions. Verify that you have selected the correct sessions and confirm the removal.
5. Verify Removal (Optional)
* After the removal operation completes, the Migrations view should refresh.
* Verify that the migration sessions you removed are no longer listed.
質問 # 50
What does the symcf g discover command do when upgrading Solutions Enabler on a Linux host1?
- A. Identifies the running SE version
- B. Builds the SYMAPI database
- C. Verifies that the SE daemons have been stopped
- D. Creates backups of the configuration directories
正解：A
解説：
Step by Step Comprehensive Detailed Explanation:
When upgrading Solutions Enabler (SE) on a Linux host, the symcfg discover command plays a crucial role in preparing for the upgrade. Its primary function in this context is to:
* Identify the running SE version:Before proceeding with the upgrade, it's essential to know the current version of Solutions Enabler installed on the host. The symcfg discover command gathers information about the existing SE environment, including the version number. This information is used to determine the appropriate upgrade path and ensure compatibility.
Why other options are incorrect:
* B. Verifies that the SE daemons have been stopped:While stopping SE daemons is a necessary step before the upgrade, it's not the function of the symcfg discover command.
* C. Builds the SYMAPI database:The SYMAPI database is typically built during the initial installation or after a fresh discovery.
* D. Creates backups of the configuration directories:Backups are important, but they are usually handled separately as part of the upgrade process, not by the symcfg discover command itself.
References and documents of Dell's public documentation for PowerMax Operate v.2:
* Dell Solutions Enabler 10.0.0 Installation Guide:This guide provides detailed instructions for upgrading Solutions Enabler on different operating systems, including Linux. It explains the steps involved and the role of the symcfg discover command in the upgrade process. You can find this document on the Dell Support website by searching for "Solutions Enabler Installation Guide."
質問 # 51
Which Solutions Enabler daemon is responsible forGatekeepermanagement?
- A. storapid
- B. storslpd
- C. storsrvd
- D. storgnsd
正解：A
質問 # 52
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