EMC - Useful Exam D-PSC-DS-01 Quizzes

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

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

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                        EMC Dell PowerScale Design v2 Exam Sample Questions (Q179-Q184):

                        NEW QUESTION # 179
                        A media and entertainment company needs a Video On Demand (VOD) storage system to support 5000 simultaneous HD streams and store 5000 hours of content.
                        Which node type provides the best price-to-performance ratio?

                        Answer: A


                        NEW QUESTION # 180
                        An Isilon customer is experiencing less than expected performance and poor space utilization with their cluster. They are using the X400 nodes with an N+2d:1n protection policy to host web server log data.
                        Upon further analysis, the customer discovers that the web servers write log files 64KiB in size. The log files are then accessed by an analytics application for reporting purposes.
                        What should be done to increase the write performance of the cluster?

                        Answer: B


                        NEW QUESTION # 181
                        As part of a proof of concept, you are investigating disk performance statistics using the "isi statistics" output.

                        After reviewing the "TimeAVG" column shown in the graphic, which information should be provided to the customer?

                        Answer: B


                        NEW QUESTION # 182
                        While considering expanding a current Isilon cluster, what tool or report can be used to investigate current file sizes used on the cluster?

                        Answer: B


                        NEW QUESTION # 183
                        Three jobs are running, all with a priority of 5. A new job with a priority of 6 needs to be run.
                        What happens?

                        Answer: B


                        NEW QUESTION # 184
                        ......

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