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EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. You have been working with a customer to size a new Isilon cluster for their environment. You recently determined that a cluster with three X400 nodes with 1TB drives and 48 GB RAM would be a perfect starting point for their workflow, but will have extra capacity. The customer just informed you that they have decided to also use the cluster for a small home directory environment and implement SmartQuotas.
Which configuration changes should you consider?

A) Add three S-Series nodes with 300GB drives with 48GB RAM, and use SmartPools
B) Increase the memory and add SSDs to the configuration.
C) Add an additional X400-Series node to the configuration.
D) Add three NL-Series nodes with 1 TB drives with 48GB RAM, and use SmartPools.

2. An Isilon customer expressed an interest in more effectively managing their storage. Specifically, they would like to plan for future growth.
Which tool would allow the customer to forecast capacity requirements?

A) SmartPools
B) InsightIQ
C) Isilon SNMP MIB
D) SyncIQ

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

4. You have 1000 users for an application that reads and writes files averaging between one and four MB in size. Each user requires 24 MB of RAM. You want to add another 1000 users for this application, and in preparation for them, you run the isi statistics command. You discover that the average CPU utilization is 20%; aggregate throughput averages 700 MB/s and the disk QueueD average is 1.5. Your cluster currently has five X200 (12 GB RAM, 1 TB drive) nodes, uses N+2:1 protection and 1 GigE networking.
What should you do to accommodate the next 1000 users?

A) Add five additional X200 (12 GB, 1 TB drive) nodes
B) Upgrade each X200 node to a total of 24 GB of RAM.
C) Upgrade two of the 1 GigE NICs to 10 GigE on each node.
D) Add five A100 (24 GB RAM) accelerator nodes.

5. An Isilon customer is reporting less than expected performance from the cluster and poor space utilization. The customer is using three X400 nodes with N+2:1 protection policy to host webserver log data. Upon further analysis, it is discovered that the webservers write log files 64 KiB in size. The log files are then accessed by an analytics application for reporting.
What should be done to increase write performance of the cluster?

A) Add S-Series storage nodes to the cluster.
B) Add SSDs to the X-Series nodes in the cluster.
C) Change the protection scheme to a mirroring policy.
D) Add A-Series performance accelerator nodes to the cluster.

Solutions: