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EMC D-PSC-DS-01 Exam Syllabus Topics:

SectionObjectives
Topic 1: Performance & Scalability- Cluster scaling behavior
  • 1. Linear scale-out architecture benefits
    - Performance tuning
    • 1. Cache hierarchy (L1/L2/L3)
      • 2. Metadata acceleration
        Topic 2: Cluster Design & Sizing- Node selection and performance tiers
        • 1. H-series, A-series, F-series node usage
          • 2. Workload mapping and scaling principles
            Topic 3: Data Management & Storage Efficiency- Snapshots and protection
            • 1. SnapshotIQ behavior and overhead
              - SmartPools and tiering
              • 1. Policy-based data movement
                • 2. Lifecycle management strategies
                  Topic 4: PowerScale Architecture & Fundamentals- OneFS architecture
                  • 1. File system layout and distributed design
                    • 2. Data protection and striping concepts
                      Topic 5: Data Protection & Availability- Erasure coding / protection levels
                      • 1. Drive and node failure tolerance

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                        EMC Dell PowerScale Design v2 Exam Sample Questions (Q214-Q219):

                        NEW QUESTION # 214
                        Your customer is moving from a Restaurant/Bar business model to a Restaurant/Casino business model. You are helping architect the upgrade of a current 4-node X200 48 TB Isilon cluster, with 65% utilized for their video surveillance operations.
                        They wish to achieve the following: Upgrade from 1280 x 720 resolution, with a 15 days retention policy, to 2048 x 1536 resolution with a 30 days retention policy.
                        What is the minimum number of nodes of the same type will you need to add in order to meet the required changes and not exceed 70% raw capacity?

                        Answer: B


                        NEW QUESTION # 215
                        How are files smaller than 128 KB protected?

                        Answer: B


                        NEW QUESTION # 216
                        A customer requires 4 PB of media storage but is concerned about the rebuild times of large drives.
                        How does PowerScale address this concern?

                        Answer: B


                        NEW QUESTION # 217
                        Traditional NAS storage architecture deploys simple two-way failover between two controllers in their storage systems, such as highly-available configurations.
                        How is the Isilon architecture different in terms of system resiliency and availability?

                        Answer: B


                        NEW QUESTION # 218
                        A customer wants to replace a legacy storage environment used for high-definition video editing. Each workstation connecting to the shared storage must sustain 650 MB/s of single-stream bandwidth.
                        Which PowerScale node type is recommended?

                        Answer: A


                        NEW QUESTION # 219
                        ......

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