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

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EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. A customer has grown 2 PB in the last year. The cluster performs well most times of the day, but occasionally during the day, the customer notices a decrease in performance. You have been told that 'tree-deletes' are taking too long and can only be run on weekends.
What would you recommend to speed up the 'tree-deletes'?

A) Use an A100 node for added CPU performance to help with 'tree-deletes.'
B) Add an SSD node tier for metadata to account for at least 2% of RAW capacity
C) Add an SSD tier for metadata, ensuring all nodes have SSDs.
D) Add 20% more nodes to the cluster to help with degraded performance.

2. 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) None
B) Three
C) Two
D) One

3. A media and entertainment company has asked for help in creating a new Video On Demand (VOD) storage system. The storage would be delivered to 5000 subscribers simultaneously. They would like to store 5000 hours of full length, High Definition (HD) movies.
What would be the best price-to-performance node(s) for this solution?

A) X400 with 1.6TB SSD and 24GB RAM
B) Mixed X400 48GB RAM and NL400 24GB
C) X200 with no SSD and 48GB RAM
D) X400 with no SSD and 96GB RAM

4. Refer to the exhibit.

Which tool was used to create this output and what is the most significant characteristic?

A) nfsstat and read-intensive access
B) isi_netlogger and moderate metadata read operations
C) nfsstat and write-intensive access
D) iostat and write-intensive access

5. 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+2
D) N+1

Solutions: