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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Protection and Maintenance | 10% | - Maintenance activities
|
| Topic 2: PowerFlex Installation and Initial Configuration | 18% | - Deployment operations
|
| Topic 3: PowerFlex Administration | 32% | - System administration
|
| Topic 4: PowerFlex Monitoring and Troubleshooting | 20% | - Operations monitoring
|
| Topic 5: PowerFlex Components and Resource Discovery | 20% | - PowerFlex architecture
|
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NEW QUESTION # 25
Which prerequisites must be met to enable replication between PowerFlex clusters? (Choose two).
Answer: A,B
NEW QUESTION # 26
Which logical entity is used to group Storage Data Server (SDS) nodes for fault isolation and resource management?
Answer: B
Explanation:
The Protection Domain (PD) is the highest level of logical aggregation for storage nodes in PowerFlex.
* Fault Isolation: The Protection Domain acts as a "walled garden" for failures. If a catastrophic failure occurs (e.g., a power outage affecting a specific rack), the impact is contained within that Protection Domain. Data replication and rebuilding occur within the boundaries of the PD. An SDS in Protection Domain 1 cannot mirror data to an SDS in Protection Domain 2.
* Resource Management: Administrators manage resources at the PD level to balance the cluster. For example, a cluster might have one Protection Domain for "High Performance Flash" nodes and another PD for "High Capacity HDD" nodes.
* Differentiation:
* Storage Pools exist inside a Protection Domain to group disks.
* Fault Sets exist inside a Protection Domain to further granularize failure zones (e.g., preventing mirroring between nodes in the same rack).
NEW QUESTION # 27
Which feature of PowerFlex is leveraged to expand storage capacity in a cluster?
Answer: C
Explanation:
PowerFlex is a scale-out architecture.
* Dynamic Node Addition (Option B): This refers to the ability to add new x86 servers (nodes) to the cluster on the fly. When you add a node with local drives, the PowerFlex software automatically recognizes the new capacity. It then initiates a Rebalance operation, moving data chunks from existing full nodes to the new empty node until usage is uniform across the cluster. This process increases both Storage Capacity and Performance (IOPS/Bandwidth) linearly.
Incorrect Options:
* Fault Sets (A) organize nodes for availability, they do not add capacity.
* Snapshots (C) consume capacity.
* Shared File Systems (D) manage how capacity is accessed (NAS), not the expansion of the raw block layer.
NEW QUESTION # 28
What actions are taken when reconfiguring Storage Data Servers during cluster expansion?
(Choose two).
Answer: A,C
Explanation:
When expanding a cluster by adding new Storage Data Server (SDS) nodes:
Validate new node compatibility (Option A): Before adding a node, you must ensure it matches the hardware compatibility list (HCL). More importantly, to prevent performance bottlenecks ("stragglers"), the new nodes should ideally match the CPU, RAM, and most importantly, the drive type/performance of the existing nodes in the Storage Pool.
Configure Fault Sets for the new nodes (Option C): If the cluster is configured to use Fault Sets (which is recommended for larger clusters to ensure rack-level availability), the new node must be explicitly assigned to a specific Fault Set before it is added. You cannot add a node to a Protection Domain that uses Fault Sets without specifying which Fault Set it belongs to.
NEW QUESTION # 29
Which PowerFlex model includes integrated compute and storage in a single appliance?
Answer: C
Explanation:
PowerFlex Appliance is the model that offers a flexible, semi-customizable solution that includes both compute and storage resources within a single managed server node (Hyper-Converged Infrastructure).
PowerFlex Appliance: This offering allows customers to start small and scale. It provides the full PowerFlex software stack pre-installed on qualified hardware (like Dell PowerEdge R650/R750 nodes) that contributes both processing power (Compute) and disk capacity (Storage) to the cluster.
NEW QUESTION # 30
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