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EMC E20-554 Exam Syllabus Topics:

EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. Refer to the exhibit.

You are analyzing a customer's existing Isilon environment using isi statistics in order to expand the cluster. When examining the protocol subcommand, you see the output as shown in the exhibit.
What does the data tell you about the workload?

A) It is metadata intensive.
B) It contains mostly random writes.
C) It uses large read requests.
D) It is mostly sequential reads.

2. A company currently has multiple fileservers to provide home directories for its employees. Each department has a separate fileserver. Most corporate users are on Windows clients and utilize Active Directory, except for the Engineering department, which uses Linux and NIS for authentication. The company is looking for a solution with minimal administrative overhead and a single namespace for the home directories.
What is the recommended solution that will meet this company's requirements?

A) Configure two separate clusters, one for Windows clients and the other for Linux.
B) Utilize SmartPools to create two different FilePools, and separate Windows users from Linux users.
C) Configure a single cluster, and migrate Linux users to Windows.
D) Configure a single Isilon cluster and utilize Access Zones for authentication to Active Directory and NIS.

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

4. Your customer has a new business unit. They are gathering web log files to be analyzed. They are using Hadoop to do the analysis of the logs. The IT department is centrally storing the log files on a 5-node Isilon cluster. They have enabled the Hadoop cluster to access the files directly on the Isilon storage. The nodes are X400's with two SSD drives in each node and 96GB of RAM.How many DataNodes does the Isilon cluster have?

A) One
B) Two
C) Five
D) Three

5. You are asked to size a cluster for a file sharing environment. nfsstat indicates that no more than 10% of the requests are namespace operations (e.g. GETADDR, SETADDR). There will be 10,000 active Linux users, connecting over NFS.
Which cluster configuration would you recommend?

A) Ten X400 (60 TB) 48 GB RAM, 2.4 TB SSD, N+2:1
B) Eight X200 (36 TB) 24 GB RAM, no SSD, N+2:1
C) Ten X200 (27 TB) 48 GB RAM, 600 GB SSD, N+2:1
D) Five X400 (120 TB) 96 GB RAM, 2.4 TB SSD, N+2

Solutions: