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EMC D-PSC-DS-01 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Cluster Design & Sizing | - Node selection and performance tiers
|
| Performance & Scalability | - Performance tuning
|
| Data Protection & Availability | - Erasure coding / protection levels
|
| Data Management & Storage Efficiency | - SmartPools and tiering
|
| PowerScale Architecture & Fundamentals | - OneFS architecture
|
EMC Dell PowerScale Design v2 Sample Questions:
A customer plans to deploy N+2:1 protection on a 5-node Isilon cluster. How much capacity will be used to store a 1024 KiB file?
- A. 1280 KiB
- B. 1024 KiB
- C. 1920 KiB
- D. 1792 KiB
Correct Answer: A 🗳️
What is the minimum size and the maximum size, respectively, of a single pre-Gen 6 node pool?
- A. 4 and 144
- B. 3 and 288
- C. 4 and 288
- D. 3 and 144
Correct Answer: D 🗳️
How is the journal protected in Gen 6 hardware?
- A. Identical copy is maintained on both nodes of each node pair
- B. Identical copy is maintained on all nodes of the cluster
- C. Each node has a mirrored write cache
- D. Each node has a mirrored M.2 vault
Correct Answer: C 🗳️
Refer to the exhibit.
Which tool was used to create this output and which line item counts the metadata read operations occurring in the file service?
- A. nfsstat and getattr
- B. iostat and fsstat
- C. isi_netlogger and commit
- D. tcpdump and nfsstat
Correct Answer: A 🗳️
Your customer has an existing Isilon cluster comprised of five NL-Series nodes. They have a new project that will quadruple their current throughput requirements. Upon reviewing reports in InsightIQ, you see that the aggregate external network throughput is peaking at 600MB/s. The customer states that data is only active for the first 7 days, but they keep it indefinitely.
Which recommendation best supports their growth requirements?
- A. Add X-Series nodes to the cluster, and use SmartPools to migrate inactive data to the NL-Series nodes.
- B. Use the Isilon Sizing Tool to determine GNA requirements, and add NL-Series nodes with SSD to the cluster.
- C. Add a VNX Unified array for the new project, and use rsync to migrate data to the Isilon cluster for archiving.
- D. Add A-Series nodes to the cluster to boost combined network performance.
Correct Answer: A 🗳️
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