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EMC DES-1415 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Configuration and Implementation | 25% | - Protocols
|
| PowerScale Hardware Installation | 12% | - Racking and Cabling
|
| PowerScale Hardware Concepts | 20% | - Cluster Architecture
|
| Cluster Administration and Data Services | 25% | - Performance and Monitoring
|
| PowerScale Software Concepts | 18% | - OneFS Architecture
|
EMC Specialist - Technology Architect, PowerScale Solutions Sample Questions:
Question 1
Which cache type contains data blocks from previous read and write transactions?
Response:
A. Metadata stored on SSDs
B. L1 cache
C. L2 cache
D. L3 cache
Question 2
Refer to the exhibit.
A customer calls you and asks if you could come by and interpret their InsightIQ data. You see that namespace reads are 63% of the work load. What would you recommend to help this cluster's namespace performance?
Response:
A. Add SSDs
B. Add A-Series nodes
C. Turn off write cache
D. Add S-Series nodes
Question 3
A company has data protection and recovery requirements that include:
- Point-in-time images of data
- Local data protection
- Directory level granularity
- Manual or scheduled operation
- Minimal storage to maintain
Which Isilon feature satisfies all requirements?
Response:
A. SyncIQ
B. SnapshotIQ
C. Smart Pools
D. NDMP two-way
Question 4
A potential customer requires 4 PB of usable capacity to store media files. The workloads are a combination of streaming video delivery and long term archive of video assets.
There is very little space available in the customer's datacenter, so physical density is very important. The customer is concerned about performance impact and potential data loss when using 3 TB or larger drives.
What Isilon capabilities can address the customer's concerns?
Response:
A. N+3 and N+4 Protection Levels exceed traditional RAID6 availability.Proactive hot sparing eliminates most drive rebuilds.Endurant Cache reduces the overhead for write operations.
B. Isilon nodes have more drives per rack unit so fewer shelves are required.Proactive hot sparing eliminates most drive rebuilds.N+3 and N+4 Protection Levels exceed traditional RAID6 availability.
C. Isilon does not perform rebuilds - data reprotection is typically 2x-3x faster than traditional RAID rebuilds.Data recovery is consistent, taking the same amount of time regardless of cluster size.Isilon ,short strokes, 4TB drives to reduce rebuild time.
D. Isilon does not perform rebuilds - data reprotection is typically 2x-3x faster than traditional RAID rebuilds.N+3 and N+4 Protection Levels exceed traditional RAID6 availability.Data redistribution runs faster with more nodes in the cluster.
Question 5
You have had several meetings with an existing EMC VMAX customer. They have agreed that they would like to review an initial Isilon Solution for unstructured data used by the Product Development Team. All production is managed through a Global Enterprise Resource Planning system based in Germany.
They require 600TiB of usable capacity. The File System must be accessible from Windows and Linux High-End Workstations. The files are generally not accessed after 120 days, and they would like automated tiering.
Which questions about architectural integration will impact the solution design?
Response:
A. How many data centers do they have?Will their Network Infrastructure support implementing Isilon?What Enterprise Resource Planning platform are they using in manufacturing?
B. What non-sizing-specific factors in the customer's environment could impede integration of the Isilon solution?What applications are they using?What are your priorities among performance, scalability, or availability?
C. How many clients will access the File System?Will their VDI clients access the Isilon Cluster?What is the DR plan for the ERP System?
D. What Enterprise Resource Planning platform are they using in manufacturing?What is their Recovery Point Objective?What is their Archival Strategy?
Solutions:
| Question 1 Answer: D | Question 2 Answer: A | Question 3 Answer: B | Question 4 Answer: D | Question 5 Answer: B |



