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EMC E20-554 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Networking and Protocols | - Client access optimization - Network topology design - NFS, SMB, and multiprotocol environments |
| Topic 2: Isilon Architecture and Components | - Data layout and striping methodology - Node types and cluster design - OneFS architecture fundamentals |
| Topic 3: Data Protection and Availability | - Protection levels and mirroring strategies - Disaster recovery design - Snapshot and backup integration |
| Topic 4: Cluster Design and Sizing | - Scale-out design principles - Capacity planning and workload assessment - Performance considerations |
| Topic 5: System Management and Operations | - Monitoring and maintenance - Security and access control - Upgrades and lifecycle management |
EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:
1. 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) Maximum performance is obtained by only using a single 10GbE interface per node. Isilon can support up to 400MB/s per node
B) Dual 10GbE ports on each node will enable throughput of 20Gbps. Only connect half of the nodes to the network.
C) 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.
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
2. Your customer uses an existing Isilon cluster consisting of five NL-Series nodes to source broadcast media files for playback and streaming. The customer reports that the playback pauses and stutters regularly. It has been confirmed that there are no network or playback system issues.
Which is the appropriate choice to resolve the playback issues?
A) Upgrade OneFS to the latest version
B) Enable SmartConnect Advanced
C) Enable Level 2 caching
D) Add three or more S-Series nodes
3. -- Exhibit -
We have been engaged by a research hospital to help upgrade their Isilon installation. They currently have 12 previous generation Isilon nodes with 200TB of capacity and run on a 1Gbps network. They currently have 6 Illumina Hi-Seq Sequencers and an HPC cluster to process data. They would like to expand Isilon to 2PB of active data and 1PB of archive data. They use a third party data and metadata management service (IRODs) to stage data for analysis. The Isilon cluster is mainly used for analysis work with the HPC cluster.
-- Exhibit -
Currently, the workflows are being limited by the network access to the Isilon cluster.
What would result in the fastest possible network throughput?
A) Move analysis infrastructure to dedicated 10G network.
B) Add four A-Series accelerator nodes.
C) Implement jumbo frames.
D) Use LACP to aggregate the network connections.
4. A customer is making a decision between Isilon and a competitor's offering. They currently have 100TB of usable capacity and are forecasting 100% growth per year for the next three years, which will require them to lease additional space in their co-located data center. The CFO finds ROI and TCO to be important decision criteria.
Which statement best emphasizes the value of Isilon for this customer?
A) The competition cannot offer a scale-out NAS so as capacity is added to the array, performance may degrade.
B) An IDC study found that Isilon requires 95% less down time hours per year compared to other competitors.
C) Isilon'sOneFS data protection policies offer substantially lower overhead than competitive RAID based NAS solutions.
D) Isilon'sOneFS allows administrators to manage much larger amounts of capacity than competitive offerings.
5. Which protocols are supported by IsilonOneFS for file access?
A) HDFS, NFS, iSCSI, SNMP
B) NFS, HDFS, HTTP, SMB
C) FTP, NFS, SMB, FC
D) SMB, HTTP, SMTP, HDFS
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: A |

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