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EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. You have gathered information from your customer about their current NAS environment. They indicated they are having performance and time-out issues with their clients accessing the storage. Currently over 5000 clients are simultaneously accessing the NAS; however, this will double in the next year.
Based on this information, what recommendations for a new Isilon cluster would you give to the customer based on this information?

A) Create a three node cluster today. As more clients are added, add three additional nodes each time for 1000 clients.
B) Create a six node X400 cluster today. As additional clients are added, add additional X400 nodes for them.
C) Create a seven node X400 cluster today. You will not need to purchase additional nodes as more clients are added.
D) Create a five node X400 cluster today. As more clients are added, add a Performance Accelerator node for every 1000 clients.

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

3. In your second meeting with the customer you ask the following questions about their current unified SAN and NAS platform.
"Are you using an application to map users from NFS Exports to SMB shares? Is each site a separate LDAP or AD Domain?"
What functionality are you trying to understand in their environment and what is the comparable feature in IsilonOneFS?

A) Identity Mapping and Authentication Sources
B) Kerberos Infrastructure and Identity Management
C) NFS Export Management and OneFS Cluster Management
D) User Management and AD Authentication

4. You are sizing an Isilon cluster for a new customer. Analyzing their workflow you determine that they have a large block random read workload.What is the most important factor to consider when sizing this solution?

A) IOPS
B) Bandwidth
C) Headroom
D) Latency

5. Your customer has observed a degradation in response time while browsing for media files within the Production Media folder on the Isilon cluster. That directory now contains over five million files. It was confirmed that there are no network or edit station related causes.
What changes to the Isilon cluster will best accelerate the browsing performance?

A) Add an A-Series Performance Accelerator node
B) Upgrade RAM on the nodes
C) Add Solid State Drives (SSDs) to the nodes
D) Upgrade network interfaces on the nodes to 10 Gbps

Solutions:

Question # 1 Answer: B

Question # 2 Answer: D

Question # 3 Answer: A

Question # 4 Answer: B

Question # 5 Answer: C