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[General] D-PWF-OE-00 Exam Flashcards, D-PWF-OE-00 Latest Exam Labs

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【General】 D-PWF-OE-00 Exam Flashcards, D-PWF-OE-00 Latest Exam Labs

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EMC D-PWF-OE-00 Exam Syllabus Topics:
TopicDetails
Topic 1
  • Expanding a PowerFlex Cluster: This domain focuses on cluster expansion and maintenance including using maintenance modes, adding nodes, configuring Storage Data Servers and Meta Data Managers, and understanding PowerFlex integration with APEX.
Topic 2
  • PowerFlex Upgrades: This domain covers understanding upgrade procedures and executing cluster upgrades to newer software versions.
Topic 3
  • PowerFlex Logical Entities: This section focuses on configuring the logical structures within PowerFlex including templates, resource groups, protection domains, fault sets, and storage pools that organize and manage storage resources.
Topic 4
  • PowerFlex Storage: This domain addresses daily storage operations including creating and managing volumes, configuring shared file systems, and working with storage data targets.
Topic 5
  • PowerFlex Components and Resource Discovery: This domain covers identifying PowerFlex hardware models and software components, using management interfaces to interact with the system, and completing essential post-installation configuration tasks.

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EMC Dell PowerFlex Operate Exam Sample Questions (Q75-Q80):NEW QUESTION # 75
Which actions can be performed within a Protection Domain? (Choose two).
  • A. Monitor fault tolerance compliance
  • B. Enable automatic volume snapshots
  • C. Group nodes for metadata management
  • D. Create multiple Storage Pools
Answer: A,D
Explanation:
* Create multiple Storage Pools (Option A): A Protection Domain (PD) is a container for nodes. Inside that container, you can define multiple storage pools (e.g., "PD1_Performance_Pool" and
"PD1_Capacity_Pool") to segregate media types within the same group of servers.
* Monitor fault tolerance compliance (Option B): Since the PD is the boundary for mesh mirroring, you monitor the health and rebuild status at the PD level. If a node fails, you monitor the PD to see the
"Rebuild Progress" to ensure fault tolerance is restored.
Incorrect Options: Nodes are grouped for storage (SDS), not metadata management (C). Snapshots (D) are enabled on Volumes, not on the Protection Domain object itself.

NEW QUESTION # 76
What is the minimum number of nodes required to create a Storage Data Server (SDS)?
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Answer: C
Explanation:
* 3 Nodes: While you can technically install the SDS software on a single server, to create a functioning Storage Pool and a valid PowerFlex cluster that supports the standard 2-copy mesh-mirroring protection scheme, a minimum of 3 SDS nodes is required.
* Why? Data is divided into chunks (Primary and Secondary).
* Chunk A Primary goes to Node 1.
* Chunk A Secondary goes to Node 2.
* If Node 1 fails, the system needs a third node (Node 3) to rebuild the missing copy from Node 2 to restore redundancy. A 2-node cluster cannot rebuild data if one node fails (nowhere to put the copy), leaving it permanently degraded.

NEW QUESTION # 77
What are the advantages of using PowerFlex Manager for upgrades? (Choose two).
  • A. Real-time performance monitoring during upgrades
  • B. Automated rollback in case of failure
  • C. Multi-cluster upgrade capabilities
  • D. Scheduled upgrades to minimize downtime
Answer: C,D
Explanation:
PowerFlex Manager (PFxM) serves as the automation engine for Lifecycle Management (LCM).
* Scheduled upgrades to minimize downtime (Option B): PFxM allows administrators to schedule upgrades during maintenance windows. More importantly, it orchestrates the upgrade in a non- disruptive manner (rolling upgrades), ensuring that workloads (VMs, Databases) remain online throughout the process. It handles the complex logic of placing nodes in maintenance mode, waiting for data sync, and rebooting.
* Multi-cluster upgrade capabilities (Option C): PFxM acts as a "single pane of glass" that can manage multiple PowerFlex clusters (services) across the data center. This allows for centralized version control and the ability to push compliant software (RCMs) to multiple distinct clusters from one interface.
Note: While Real-time performance monitoring (D) is a feature of PFxM, it is a daily operational benefit, not a specific advantage of the upgrade process itself.

NEW QUESTION # 78
What are the prerequisites for creating a Fault Set? (Choose two).
  • A. Enabled deduplication
  • B. At least 3 nodes in the cluster
  • C. Existing Storage Pool
  • D. Predefined Protection Domain
Answer: B,D
Explanation:
Fault Sets are a logical subdivision within a Protection Domain used to increase availability (e.g., ensuring that the three copies of data reside in three different racks).
* Predefined Protection Domain (Option B): Fault Sets exist inside a Protection Domain. You cannot create a Fault Set floating in the void; it must be assigned to a parent Protection Domain.
* At least 3 nodes in the cluster (Option A): PowerFlex uses a mesh-mirroring architecture. To guarantee availability, the system generally requires a minimum of 3 Fault Sets (so that if one fails, the data can be rebuilt to the other two). Since a Fault Set must contain at least one node, this implies a minimum requirement of 3 nodes (one per Fault Set) to utilize the feature effectively.
Note on Option C: You typically define Fault Sets before creating Storage Pools or adding SDSs in a greenfield deployment. If Storage Pools already exist, converting to Fault Sets is complex/restricted, so
"Existing Storage Pool" is not a prerequisite for creating the Fault Set structure itself.

NEW QUESTION # 79
What is the recommended method for performing a fully automated upgrade of a PowerFlex cluster?
  • A. Upgrading Metadata Managers first manually
  • B. Manual node-by-node upgrades via CLI
  • C. Reinstalling the operating system on each node
  • D. Using the PowerFlex Manager Lifecycle Management (LCM) feature
Answer: D
Explanation:
PowerFlex Manager (PFxM) is specifically designed to handle the complexity of the lifecycle management (LCM) for the solution.
The recommended method is using PFxM LCM because:
* Orchestration: It automatically determines the correct order of operations (e.g., MDM $ightarrow$ SDS $ightarrow$ SDC).
* Safety: It ensures the cluster is healthy before proceeding. It automatically places nodes into Maintenance Mode (PMM) to ensure data redundancy is maintained throughout the process.
* Compliance: It checks the nodes against a "Compliance File" (RCM - Release Certification Matrix) to ensure that the BIOS, Firmware, Drivers, and OS match the PowerFlex software version.
* Efficiency: Manual upgrades (Option A) are error-prone and time-consuming. Reinstalling the OS (Option C) is destructive and unnecessary. While MDMs are upgraded early in the process (Option D), doing it manually is not the recommended method for the whole cluster when PFxM is available.

NEW QUESTION # 80
......
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