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EMC E20-554 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Networking and Protocols | - Network architecture for Isilon clusters - NFS, SMB, and HDFS protocol support |
| Topic 2: Performance and Scalability | - Performance optimization techniques - Cluster scaling and workload distribution |
| Topic 3: Data Protection and Availability | - Snapshots, replication, and backup integration - Erasure coding and data protection schemes |
| Topic 4: Solution Design Considerations | - Customer requirements analysis and sizing - Cluster design and scalability planning |
| Topic 5: Isilon / OneFS Architecture Fundamentals | - OneFS operating system fundamentals - Scale-out NAS architecture concepts |
| Topic 6: Implementation and Troubleshooting | - Common issues and troubleshooting methods - Deployment planning and best practices |
EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:
Your customer's initial use case was Home Directories. They implemented the cluster with four 1Gbps ports and LACP. They are planning to expand their cluster to support their core file services. They plan to upgrade their network infrastructure to 10 GbE to facilitate this.
What are two design impacts this change will have?
- A. Dual 10GbE ports on each node will enable throughput of 20Gbps. Only connect half of the nodes to the network.
- B. LACP and multiple links may be used to increase redundancy, but will not provide more overall
performance to the system.
FCoE should be considered for the External Network Ports on the nodes. - C. Maximum performance is obtained by only using a single 10GbE interface per node. Isilon can support up to 400MB/s per node
- D. Maximum performance is obtained by only using a single 10GbE interface per node. LACP and multiple links may be used to increase redundancy, but will not provide more overall performance to the system
Correct Answer: D 🗳️
You meet a customer for the first time. They explain that their current environment for NAS does not meet their needs. You want to make sure that Isilon is a good fit for their needs.
What would be a good prequalifying question to ask?
- A. What type of racks are in your datacenter?
- B. What applications access this storage?
- C. How many NICs do your clients have?
- D. Are you using a KVM to access your storage?
Correct Answer: B 🗳️
Refer to the exhibit.
You want to add redundancy to your network configuration, rather than performance. You have configured all interfaces into the default SmartConnect zone.
How should you configure the switches and Isilon networking to provide your desired network redundancy?
- A. Configure the switch ports for LACP and use FEC aggregation for subnet0:pool0.
- B. Configure the switch ports as access points and use LACP aggregation for subnet0:pool0.
- C. Configure the switch ports for LACP and use LACP aggregation for subnet0:pool0.
- D. Configure the switch ports as access points, bond ext-0 and ext-1 on all nodes and use Active/Passive aggregation for subnet0:pool0.
Correct Answer: C 🗳️
You are designing a new Isilon system to store mobile device video clips. The files average 800MB in size and the application team tells you to plan for up to 15,000 new files per day. The product manager for this new service wants enough capacity for the first year and reminds you that response time for storing and retrieving the files is important for customer satisfaction.
The files will be accessed frequently for the first 48 hours after creation, and then very infrequently after seven days. You plan to use N+2:1 protection, and will configure a SmartPools policy to move inactive files to an archive tier within the cluster.
Which configuration best fits the project requirements?
- A. 4 x X400 nodes with 1TB drives; 36 x NL400 nodes with 4TB drives
- B. 4 x S200 nodes with SSD; 45 x NL400 nodes with 3TB drives
- C. 4 x X200 nodes with SSD; 36 x NL400 nodes with 4TB drives
- D. 38 x X400 nodes with 4TB drives and SSD
Correct Answer: C 🗳️
Your customer's site uses an old X-Series cluster, and they are interested in consolidating their two primary workflows. iostat shows that one of the applications is sensitive to latency, while isi statistics indicates sensitivity to disk response times. There are approximately 1000 users accessing 70 TB of file data.Which node type would you recommend?
- A. S200
- B. NL400
- C. X200
- D. X400
Correct Answer: A 🗳️
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