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EMC DES-1415 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Protection and Security | 10% | - Data Protection Features
|
| Topic 2: Implementation and Configuration | 20% | - Network Configuration
|
| Topic 3: PowerScale Fundamentals | 20% | - Core Concepts
|
| Topic 4: Management and Operations | 15% | - Maintenance Tasks
|
| Topic 5: Design and Sizing | 25% | - Capacity and Performance Planning
|
| Topic 6: Integration and Interoperability | 10% | - Integration with Other Systems
|
EMC Specialist - Technology Architect, PowerScale Solutions Sample Questions:
The protection level of an Isilon Gen 6 cluster with eight nodes has been set to the default protection level. How many failures are tolerated without data loss?
Response:
- A. Two drives or one node
- B. Two drives in every node
- C. Two drives and one node
- D. Three drives or three nodes
An Isilon storage administrator is concerned about capacity after ingesting 200 TB of file dat a. They recently added more nodes to the cluster and now want to auto-balance it as soon as possible.
The cluster utilization percentages for an average 24-hour period are:
- 45% during 00:00 - 08:59
- 60% during 09:00 - 17:00
- 85% during 17:01 - 23:59
The administrator wants to keep cluster utilization at a minimum. Which Impact Policy settings should be used to quickly complete the job without impacting the production workload?
Response:
- A. High, Medium, Paused.
- B. Medium, Medium, Low.
- C. Medium, Low, Low.
- D. High, High, Low.
You are working with a healthcare company that is interested in replacing all the backend storage for their PACS system. In general, how should the solution be presented to the customer?
Response:
- A. Isilon A-Series nodes for image cache; Isilon NL-Series nodes for image archive
- B. VNX for image cache; Isilon NL-Series nodes for image archive
- C. Isilon NL-Series nodes for image cache and image archive
- D. VNX for image cache and image archive
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. 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.
- B. 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.
- C. 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.
- D. 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.
Your customer has a new business unit. They are gathering web log files to be analyzed. They are using Hadoop to do the analysis of the logs. The IT department is centrally storing the log files on a 5-node Isilon cluster.
They have enabled the Hadoop cluster to access the files directly on the Isilon storage. The nodes are X400's with two SSD drives in each node and 96GB of RAM.
How many DataNodes does the Isilon cluster have?
Response:
- A. Five
- B. One
- C. Three
- D. Two
