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EMC DES-1415 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: PowerScale Hardware Installation | 12% | - Node Initialization
|
| Topic 2: Cluster Administration and Data Services | 25% | - System Management
|
| Topic 3: PowerScale Hardware Concepts | 20% | - Node Types and Models
|
| Topic 4: Configuration and Implementation | 25% | - Network Configuration
|
| Topic 5: PowerScale Software Concepts | 18% | - OneFS Architecture
|
EMC Specialist - Technology Architect, PowerScale Solutions Sample Questions:
1. A customer is running OneFS 8.0 on an Isilon cluster exclusively consisting of NL400 nodes. The storage administrator recently heard that in OneFS 8.1.2 it is possible to use larger journals for higher performance.
What should you advise the storage administrator?
Response:
A) Migrate all data from the current Isilon cluster to an H500 cluster
B) Add SSDs to all nodes of the existing cluster and upgrade to OneFS 8.1.2
C) Add A2000 nodes to the existing Isilon cluster and upgrade to OneFS 8.1.2
D) Replace the batteries of the battery backed volatile storage with NiMH batteries
2. A potential customer has a requirement for 4 PB of usable capacity to store media files. Their data center has limited physical space, so efficient use of that space is important. However, the customer is concerned about using 3 TB or larger drives because of rebuild times.
How does an Isilon cluster address this customer's concern?
Response:
A) Drive recovery takes the same amount of time regardless of drive sizeShort-stroking 4 TB drives to reduce drive seek and access time
B) Nodes have more drives per rack unitProactive hot sparing eliminates most drive rebuilds
C) OneFS protects data rather than rebuilding drivesSplitting drives into failure domains reduces risk
D) Proactive hot sparing eliminates most drive rebuildsEndurant Cache reduces the overhead during drive rebuild operations
3. 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 A-Series nodes
B) Turn off write cache
C) Add SSDs
D) Add S-Series nodes
4. What are three benefits of NDMP multistream backup and recovery?
(Select 3)
Response:
A) Different backup context
B) Backup context is retained
C) Backup concurrently
D) Backup sequentially
E) Same backup context
5. Three jobs of different exclusion sets with a priority level of 5 are concurrently running on a cluster. A new job with a priority of 4 needs to be run. What does the Job Engine do?
Response:
A) Pauses all priority 5 jobs and runs the new job until completion, then restarts the paused job
B) Pauses a priority 5 job and runs the new job until completion, then restarts the paused job from the beginning
C) Queues the old job of the same exclusion set until the job with a higher priority completes
D) Runs the new job in parallel with the other running jobs
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: C | Question # 3 Answer: C | Question # 4 Answer: B,C,E | Question # 5 Answer: B |
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