EMC E20-554 : Isilon Design Specialist Exam for Technology Architects

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EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. -- 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 will add two more Illumina Hi-Seq Sequencers in the next 6 months.
Once these are added, what is the total amount of data from all the sequencers they can expect to add per month?

A) 4.8 TB
B) 14.4 TB
C) 1.2 TB
D) 9.6 TB

2. 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) 38 x X400 nodes with 4TB drives and SSD
B) 4 x X400 nodes with 1TB drives; 36 x NL400 nodes with 4TB drives
C) 4 x X200 nodes with SSD; 36 x NL400 nodes with 4TB drives
D) 4 x S200 nodes with SSD; 45 x NL400 nodes with 3TB drives

3. Which IsilonOneFS protection level allows you to withstand two drive failures but no more than one complete node failure?

A) N+2:1
B) N+3:1
C) N+1
D) N+2

4. When conducting high-level interviews with stakeholders of a project, what are the key questions that should be asked?

A) Who are the application owners?
How much usable storage is needed?
What applications will be accessing the storage?
How many users are in your Active Directory?
B) How much usable storage are you looking for? What client OS will access this storage? Which applications will access this storage?
C) Which backup application is in use today?
What is your change rate?
How many clients will connect to the cluster?
D) What does your network architecture look like?
Do you have existing NAS infrastructure?
Do you have 10Gb or 1Gb ethernet?
Which applications will access this storage?

5. When designing Isilon solutions, which issue should you pay special attention to?

A) Meet customer expectations
B) Create a workflow document
C) Conduct stakeholder interviews
D) Follow all SSD sizing rules

Solutions: