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EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. Your customer has an Isilon cluster with five X400 nodes and four 72NL nodes. A SmartPools policy moves data to the NL nodes after 60 days of inactivity. The customer wants to expand the archive tier by at least 150 TB and would like to manage a single archive pool.
Which nodes should be added to the cluster?

A) Three NL400 nodes with 2TB drives
B) Two NL400 nodes with 4TB drives
C) Three X400 nodes with 1TB drives
D) Two X400 nodes with 3TB drives

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 -
The customer has a limited budget. What would be the best price/performance solution for their active data?

A) 17 X-Series nodes with SSD drives and 48GB of RAM.
B) 14 X-Series nodes with no SSD drives and 96GB of RAM
C) 14 NL-Series nodes with 24GB of RAM
D) 12 X-Series nodes with no SSD drives and 24GB of RAM

3. A customer has eight X400 24GB RAM nodes that support 400 client connections. They will be adding 400 more clients in the next few months. They are looking at adding an A-Series node to the cluster to help with client connections.Before they start adding client connections, what hardware change do you recommend?

A) Add an A100 node to offset concurrent client connections
B) Add more network switches to increase the number of connections
C) Add RAM to the nodes to offset concurrent client connections
D) Add nodes with SSD to help with connections

4. Your customer is moving from a Restaurant/Bar business model to a Restaurant/Casino business model. You are helping architect the upgrade of a current 4-node X200 48 TB Isilon cluster, with 50% utilized for their video surveillance operations.
They want to upgrade from 15 FPS (NTSC) in H.264 codec, with a 15 days retention policy to 30 FPS (NTSC) in H.264 codec, with a 30 days retention policy.
How many nodes of the same type will you need to add in order to meet the required changes and not exceed 70% raw capacity?

A) 8 nodes
B) 12 nodes
C) 16 nodes
D) 4 nodes

5. Refer to the exhibit.

You are analyzing a customer's existing Isilon environment using isi statistics in order to expand the cluster. When examining the protocol subcommand, you see the output as shown in the exhibit.
What does the data tell you about the workload?

A) It is mostly sequential reads.
B) It contains mostly random writes.
C) It is metadata intensive.
D) It uses large read requests.

Solutions: