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EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. 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) NL400
B) S200
C) X200
D) X400

2. -- 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 -
Before making any changes, the customer would like a graphical presentation of their existing array performance to present to management.What is the best tool to gather this information?

A) netstat
B) tcpdump
C) isi_netlogger
D) InsightIQ

3. 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) 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
C) Maximum performance is obtained by only using a single 10GbE interface per node. Isilon can support up to 400MB/s per node
D) 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.

4. A healthcare services provider is implementing an X-Series cluster. Currently they have approximately 200 customers and they are growing at 30% per year. They have 200 TB of storage utilized. Health Insurance Portability and Accountability Act (HIPAA) regulations require they keep all patient data for seven (7) years. They would like to keep all genomic sequencing data stored with N+3 protection, not to exceed 75% utilization.
What is the minimum initial configuration you would recommend?

A) 6 X400 nodes; 4 TB drives
B) 7 X400 nodes; 1 TB drives
C) 13 X200 nodes; 3 TB drives
D) 13 X400 nodes; 1 TB drives

5. Refer to the exhibit.

A large hospital chain has approached you to redesign their storage infrastructure. The head of IT believes their requirement is for 60 TB of RAW capacity. The following are the notes from meetings with the department heads.
Which is the minimum cluster configuration that meets the customer's requirements?

A) 3 NL-Series nodes using SynqIQ to 3 NL-Series nodes
B) 5 S-Series nodes
C) 3 S-Series nodes using SmartPools and 3 NL-Series nodes for Archive
D) 4 X-Series nodes using SynqIQ to 4 NL-Series nodes

Solutions: