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EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. A customer is inquiring about expanding their primary cluster consisting of six S-Series nodes in order to improve performance. They have a second cluster with 11 X-Series nodes. Both clusters leverage 1GbE, but the customer recently installed a 10GbE network that can be utilized. They also have multiple Fibre Channel SAN arrays in their environment.
They have a variety of workloads on each cluster and are in the process of determining which workloads belong on which cluster. They have discovered that one of the workloads- a SQL database that resides on the X-Series node cluster - is experiencing timeouts due to latency. The database vendor has suggested limiting latency to 5ms or less to eliminate these timeouts.
How do you advise the customer?

A) Suggest the customer consider leveraging SSDs in the new nodes they purchase and GNA to boost the performance of each cluster.
B) Consider migrating data from Isilon to one of their SAN platforms or proposing a new solution to handle the performance requirements of SQL.
C) Recommend they increase the amount of DRAM in the cluster or consider an Accelerator node in order to increase the amount of cache in their cluster.
D) Merge the S-Series nodes and X-Series nodes into one cluster, upgrade the 1GbE to 10GbE, and leverage SmartPools to allow for the cluster to determine where data should reside.

2. A company currently has numerous file servers providing home directories for its employees. Some departments have their own file servers. All corporate users authenticate using Active Directory. The engineering department has their own untrusted AD domain for their file servers.
The company is looking for a consolidated solution that requires minimal changes to the environment, and that creates a single namespace for the home directories.
What is the recommended solution that will meet this company's requirements?

A) Utilize SmartPools to create two pools to separate the domains.
B) Consolidate onto a single cluster and merge the domains.
C) Implement an Isilon cluster and utilize Access Zones.
D) Configure two separate clusters, one for each AD domain.

3. A potential customer requires 4 PB of usable capacity to store media files. The workloads are a combination of streaming video delivery and long term archive of video assets.
There is very little space available in the customer's datacenter, so physical density is very important. The customer is concerned about performance impact and potential data loss when using 3 TB or larger drives.
What Isilon capabilities can address the customer's concerns?

A) Isilon nodes have more drives per rack unit so fewer shelves are required.
Proactive hot sparing eliminates most drive rebuilds.
N+3 and N+4 Protection Levels exceed traditional RAID6 availability.
B) Isilon does not perform rebuilds - data reprotection is typically 2x-3x faster than traditional RAID
rebuilds.
Data recovery is consistent, taking the same amount of time regardless of cluster size.
Isilon 'short strokes' 4TB drives to reduce rebuild time.
C) Isilon does not perform rebuilds - data reprotection is typically 2x-3x faster than traditional RAID
rebuilds.
N+3 and N+4 Protection Levels exceed traditional RAID6 availability.
Data redistribution runs faster with more nodes in the cluster.
D) N+3 and N+4 Protection Levels exceed traditional RAID6 availability.
Proactive hot sparing eliminates most drive rebuilds.
Endurant Cache reduces the overhead for write operations.

4. You meet with the IT Director of a large single site campus. The IT department has recently taken over Physical Security from the facilities department and plans a complete overhaul of the surveillance solution. They are looking to you as a storage architecture expert to provide the correct amount of storage needed. The IT Director asks you what items they need to provide in order to size this solution.What data do you require from the customer?

A) Video resolution Video CODEC Frames per second (fps) Number of devices Retention time
B) Bit rate per camera Camera manufacturer Video management system Retention time
C) Pixel count Video CODEC Color sampling Frames per second (fps) Number of devices Retention time
D) Pixel count Video CODEC Color sampling Frames per second (fps) Number of devices Video management system Evidence collection period

5. You are working with a healthcare company that is interested in replacing all the backend storage for their PACS system.In general, how should the solution be presented to the customer?

A) VNX for image cache; Isilon NL-Series nodes for image archive
B) VNX for image cache and image archive
C) Isilon NL-Series nodes for image cache and image archive
D) Isilon A-Series nodes for image cache; Isilon NL-Series nodes for image archive

Solutions: