Most Recent Dell EMC D-PWF-DS-23 Exam Dumps

To calculate the required journal capacity, we need to consider the maximum cumulative writes that might occur during an outage. The calculation is based on the application's write bandwidth and the duration of the supported outage. For an application generating 2 GB/s of writes, using a 2-hour outage (which is 7200 seconds), the journal capacity reservation needed is:

JournalCapacity=WriteBandwidthOutageDuration

JournalCapacity=2GB/s7200s=14400GB

However, since the question specifies that the outage is under two hours, we use the minimum outage allowance of 1 hour for the calculation, which is 3600 seconds. Therefore, the correct calculation is:

JournalCapacity=2GB/s3600s=7200GB

But considering the recommendation to use three hours in the calculations for safety, the needed capacity would be approximately 10.547 TB, which is roughly 10.800 GB12. Hence, the verified answer is 10.800 GB.

For a PowerFlex system that requires compression, the necessary components include NVDIMMs and a storage pool with fine granularity. Here's why these two components are required:

NVDIMMs: Non-Volatile Dual In-line Memory Modules (NVDIMMs) provide high-speed DRAM performance coupled with flash-backed persistent storage. They are used specifically for compression on PowerFlex storage-only nodes. At least two NVDIMMs per server are required if storage compression is active1.

Fine Granularity Storage Pool: Inline compression in PowerFlex is enabled when using the fine-granularity data layout for storage pools. This granularity level allows for more efficient data compression and storage optimization2.

These components work together to enable compression in the PowerFlex system, ensuring efficient storage utilization and performance. The use of NVDIMMs for compression enhances the system's ability to handle the additional workload associated with compressing data, while the fine granularity storage pool provides the necessary structure for data layout that supports compression12.

The ''Force Clean'' option in PowerFlex is used when adding devices to an SDS (Storage Data Server) to ensure that any existing data on the device is overwritten during the addition process. This is particularly important when repurposing storage devices that may have been previously used and contain old data or configurations that could interfere with the new PowerFlex deployment1.

Setting the Force Clean SDS option to YES will initiate a process that clears any residual data from the device, effectively returning it to a clean state before it is integrated into the PowerFlex system. This step is crucial for maintaining data integrity and preventing potential conflicts that could arise from leftover data on the devices1.

The other options, such as ensuring the device is error-free and compatible with PowerFlex (Option A), performing a clean check on the device before adding it (Option C), or bypassing restrictions to proceed with adding the device (Option B), are not directly related to the purpose of the Force Clean SDS option. While compatibility checks and clean checks are important, they do not involve actively overwriting data on the device.

Therefore, the correct answer is D. Overwrite existing data on the device during the addition process, as it accurately describes the action taken when the Force Clean SDS option is set to YES in the PowerFlex system.

For setting up a NAS Server with Secure NFS, the following two configuration options are required:

NFSv4: This version of NFS includes support for strong security features and is designed to work well over the internet. NFSv4 has integrated security features and supports the Kerberos authentication protocol, which can provide a secure method for client-server interaction1.

UNIX Directory Service: This service is necessary for managing user and group information in a UNIX-like environment. It is essential for NFSv4 as it relies on this information for access control and mapping between users on the client and the server1.

The other options, such as NFSv3 (Option A), do not inherently support the same level of security features as NFSv4. User Mapping file (Option C) and DNS (Option D) are important for NFS configuration, but they are not specifically required for creating a NAS Server with Secure NFS. DNS is crucial for resolving hostnames to IP addresses, but it is not a security feature, and User Mapping file is more related to user identity mapping between different systems.

Therefore, the two required configuration options for creating a NAS Server with Secure NFS are NFSv4 and UNIX Directory Service, as they provide the necessary security and user management capabilities for a secure NFS setup.

Before permanently removing a node that is the primary MDM from a PowerFlex system, it is crucial to ensure that the MDM roles are reconfigured to maintain cluster availability and avoid errors. This process involves promoting another node to take over the primary MDM role and ensuring that the cluster continues to function correctly without the node that is being removed.

The steps to reconfigure MDM roles using PowerFlex Manager are as follows:

Log in to PowerFlex Manager.

Navigate to the MDM cluster settings.

Identify a suitable node that can be promoted to the primary MDM role.

Use the PowerFlex Manager interface to promote the selected node to the primary MDM role.

Ensure that the cluster is stable and that the new primary MDM is functioning correctly.

Once the new primary MDM is in place and operational, the original primary MDM node can be safely removed from the cluster.

This process is essential to prevent any disruptions in the management and operation of the PowerFlex system. The other options listed, such as using the remove_standby_mdm SCLI command (Option A) or the switch_cluster_mode SCLI command (Option B), do not directly address the reconfiguration of MDM roles. Deactivating the Protection Domain (Option D) is not related to the removal of an MDM node and would not be a recommended step in this scenario.

Therefore, the correct answer is C. Use PowerFlex Manager to reconfigure MDM roles, as it ensures that the MDM responsibilities are transferred to another node before the primary MDM node is removed, thus maintaining the integrity and availability of the PowerFlex system1.