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EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. A four-node Isilon cluster is being used in a Hadoop workflow with a parity protection of N+2:1. The HDFS protocol has been enabled and is being used to access data.
According to EMC best practices, how many additional many additional copies of data are written into the Isilon cluster using HDFS?

A) Three
B) One
C) Two
D) None

2. -- Exhibit -
A large manufacturing company is an existing Isilon customer with a cluster consisting of four NL400 nodes with 4TB drives. The cluster is using N+2:1 protection level and the file system shows that it is 60% utilized. Home directories and file shares comprise 75% of the existing content and the remainder is inactive deep archive. The company has 1,000 employees using Windows and Mac clients participating in a single Active Directory (AD) forest.
During a meeting with the CIO and Director of IT you discuss the company's recent acquisition - an engineering firm that specializes in Computer Aided Design (CAD). The engineering firm has 400 UNIX workstations that produce technical drawings which are currently stored on another vendor's SAN solution. The all UNIX environment uses NIS for authentication and name resolution. They do not currently use DNS or LDAP. The engineering company has an old storage system that has been experiencing problems and the CIO would like you to migrate the data onto the Isilon cluster. The CIO would like to eliminate all tape and recover the data onto disk.
The CIO is concerned about security of the company's intellectual property, especially with the rapid adoption of mobile devices and external cloud content sharing services such as DropBox, Egnyte, and SugarSync. They would like to implement an alternative that provides external file sharing and mobile device synchronization while maintaining security control over the company's data.
The Director of IT reports that users are storing non-work related content on the Isilon cluster. They would like to limit the amount of capacity that each user can consume in their home directory and want to ensure you provide the capability to easily visualize which users are over their allotment. The company's Windows users currently leverage Windows Shadow Copy to recover files that have been accidentally deleted. The IT department wants to ensure that Mac and incoming UNIX clients have the same functionality.
The Director of IT also mentions that users are reporting slow response times when browsing their home directories and shared folders. They are concerned that Isilon cannot scale to support their combined requirements.
The customer provides the following environment summary from the engineering firm's recently departed IT staff:
20 TB of Home Directory data
100 TB of active CAD projects
400 TB of archived data stored on tape at an offsite warehouse
-- Exhibit -
Which configuration changes would you recommend for the Engineering users?

A) Utilize SMB2.1 protocol and mount to the Isilon cluster using the Name Server (NS) record IP.
B) Create an FQDN for the Isilon cluster in the LMHOSTS file for each engineering system.
C) Mount an NFS share to a node on the Isilon cluster, being careful to equally distribute the load across nodes.
D) Direct all clients to use the Manufacturing DNS server and connect NFS mounts to the FQDN of the Isilon cluster.

3. A potential customer requires 800 TB of usable capacity to store medical images for their network of health clinics. The IT department has limited staff and currently manages four storage arrays from other vendors. During a meeting with the Director of IT you learn that the company is considering a solution from a competitor of EMC using two of the existing arrays and two new arrays.Which Isilon capabilities would show a better ROI for the customer?

A) Forward Error Correction overhead is 7% lower than traditional RAID.
Isilon has 6%-12% less filesystem overhead than traditional clustered filesystem solutions.
According to an IDC study, Isilon improves IT productivity by nearly 50% compared to traditional competitors.
B) With a single filesystem and virtual capacity for drive and node failures, Isilon utilization is typically
80% or higher.
OneFS compression results in higher effective capacity within the cluster.
Traditional clustered filesystems require 4%-10% internal overhead compared to Isilon virtual
capacity.
C) Isilon has 15%-20% less overhead than traditional clustered filesystems.
According to an IDC study, Isilon utilization is nearly 50% higher than traditional competitors.
Isilon QOS headroom and multiple node pools ensures consistent performance up to 80%
utilization.
D) Isilon has 6%-12% less filesystem overhead than traditional clustered filesystem solutions.
With a single filesystem and virtual capacity for drive and node failures, Isilon utilization is typically
80% or higher.
Isilon utilization is typically 80% or higher due to use of a single filesystem and virtual capacity for
drive and node failures.

4. You are reviewing an opportunity with a trusted advisor. You both discover gaps in the initial solution design.
Each iterative discussion with the customer helps you define the solution better. The documents produced capture the customer's requirements.
What else needs to occur to refine the sizing considerations?

A) Complete your Solution Design Document and forward to EMC consulting.
B) Provide the CIO with the findings and gain commitment to a Proof of Concept.
C) Validate the Workflow Profile Assessment and test the solution against your findings.
D) Review you assumptions and ask the customer what business issue you're solving.

5. When designing Isilon solutions, what issues should you pay special attention to?

A) Workflow Document Solutions Document Application types Data strategy
B) Avoid being too enthusiastic over the technology Balance technical and business requirements Provide options Design to meet customer expectations
C) Solutions Document Balance technical and business requirements Provide options Practical vs. theoretical implementations
D) Solutions Document Balance technical and business requirements Downstream hand-off Design to meet customer expectations

Solutions: