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EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. 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) Latency
D) Headroom

2. What key considerations should be kept in mind when designing a 300TB solution?

A) Always include 2% SSD SmartPools Smartconnect Snapshots InsightIQ
B) Defining class of service Time of day services ROI and TCO Data retention and backup
C) SmartPools Smartconnect Snapshots Space for snapshots
D) Workflow management Defining class of service Time of day services RPO and RTO Data retention and backup

3. -- 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 -
The CIO approaches you with a new requirement. They would like to reuse the tape library that was previously used for archiving to now be used to back up some of their data.
What do you recommend to the Director of IT as the best architecture to achieve this goal?

A) Connect the Tape Library via Fibre Channel to the Isilon cluster and use a third party backup software to initiate an NDMP backup to an accelerator.
B) Use a Backup Accelerator with SyncIQ to push the data to the tape library via the Fibre Channel ports on the accelerator.
C) Implement a Backup Accelerator and use the internal backup software within the Isilon cluster to move data to the tape library.
D) Use a third party backup software and have the Isilon cluster convert the data to LTFS so it can be stored to the tape library.

4. Your customer uses an existing Isilon cluster consisting of five NL-Series nodes to source broadcast media files for playback and streaming. The customer reports that the playback pauses and stutters regularly. It has been confirmed that there are no network or playback system issues.
Which is the appropriate choice to resolve the playback issues?

A) Add three or more S-Series nodes
B) Upgrade OneFS to the latest version
C) Enable Level 2 caching
D) Enable SmartConnect Advanced

5. A potential customer uses a solution from an EMC competitor for NFS storage in their main data center. The existing arrays are five years old, and the customer would like to consolidate them into a single new system. The entire workload is generated by eight Linux hosts connected to the arrays that process video files. The customer informs you they are not able to collect performance information from the existing arrays.
Which tools can capture the workload requirements?

A) Wireshark and sysstat
B) netstat and esxtop
C) iostat and nfsstat
D) MiTrends and netmon

Solutions: