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EMC D-PSC-DS-01 Exam Syllabus Topics:
| Section | Objectives |
| 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: 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: Performance & Scalability | - Performance tuning
- 1. Cache hierarchy (L1/L2/L3)
- 2. Metadata acceleration
- Cluster scaling behavior
- 1. Linear scale-out architecture benefits
|
| 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
|
EMC Dell PowerScale Design v2 Sample Questions:
1. After raw events are processed by CELOG coalescers, where is the data stored?
A) Audit host logs
B) CELOG database and coalesced into event groups
C) Syslog server database
D) SNMP trap receiver
2. Which data access patterns best match H500 home directory and A200 archive workloads?
A) Streaming for H500, Random for A200
B) Random for both node types
C) Concurrency for H500, Streaming for A200
D) Streaming for both node types
3. What is a consideration when using SnapshotIQ?
A) COW is used for all except large sequential writes.
B) COW is used for small changes; ROW is used for large changes.
C) ROW is used for all except inode changes.
D) ROW is used for small changes; COW is used for large changes.
4. A system administrator notices isi_gather_info takes a long time to complete.
How can the next run be optimized?
A) Exclude non-essential tools from the gathering process
B) Collect logs only from the syslog server
C) Increase the speed of the network link
D) Restart the CELOG daemon
5. 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?
A) Add S-Series storage nodes to the cluster
B) Change the protection scheme to a mirroring policy
C) Add A-Series Performance Accelerator nodes to the cluster
D) Change the SSD strategy on the cluster
Solutions:
Question # 1 Answer: B | Question # 2 Answer: C | Question # 3 Answer: B | Question # 4 Answer: A | Question # 5 Answer: C |