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NEW QUESTION # 73
A customer has an existing host with two 100 GB volumes that are assigned from existing PowerMax storage.
They would like to add three additional volumes of 100 GB each and change the service level that is assigned to the storage group from Gold to Platinum to support the current application SLO requirements.
Answer:
Explanation:
See the explanation for step by step solution.
Explanation:
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 onStorageto expand the storage management section.
* Click onStorage Groupsunder 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 fromGoldtoPlatinum.
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:
* OpenDisk Management(diskmgmt.msc).
* Go toAction > 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 toConfigure > Storage Adapters.
* Select the relevant storage adapter (e.g., your HBA).
* ClickRescan 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
NEW QUESTION # 74
A systems administrator is performing a configuration change on a PowerMax array. Where does the configuration manager perform the change?
Answer: D
NEW QUESTION # 75
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 # 76
What can be managed from the Configure Storage section using the Dell VSI vSphere plug-in?
Answer: D
Explanation:
Step by Step Comprehensive Detailed Explanation:
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.
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 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.
NEW QUESTION # 77
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?
Answer: B
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 # 78
......
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