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EMC E20-554 Exam Syllabus Topics:

EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. 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) Eight X200 (36 TB) 24 GB RAM, no SSD, N+2:1
B) Ten X400 (60 TB) 48 GB RAM, 2.4 TB 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

2. You are assisting a customer with creating an Isilon solution that will address their needs while remaining cost-effective. The customer environment consists entirely of archive data. The data in their enterprise produces very little I/O and is only occasionally accessed.
Which Isilon storage node type will meet the customer's needs?

A) Performance Accelerator node
B) NL-Series node
C) X-Series node
D) S-Series node

3. -- Exhibit -
We have been engaged by a research hospital to help upgrade their Isilon installation. They currently have 12 previous generation Isilon nodes with 200TB of capacity and run on a 1Gbps network. They currently have 6 Illumina Hi-Seq Sequencers and an HPC cluster to process data. They would like to expand Isilon to 2PB of active data and 1PB of archive data. They use a third party data and metadata management service (IRODs) to stage data for analysis. The Isilon cluster is mainly used for analysis work with the HPC cluster.
-- Exhibit -
The customer will add two more Illumina Hi-Seq Sequencers in the next 6 months.
Once these are added, what is the total amount of data from all the sequencers they can expect to add per month?

A) 9.6 TB
B) 4.8 TB
C) 14.4 TB
D) 1.2 TB

4. Refer to the exhibit.

During a requirements gathering meeting, the customer identified a desire to use a codec for editing content that will take up the least amount of space on their Isilon cluster. The content is 1920x1080 HD.
Based on the provided list of codecs, which codec would minimize the storage requirement?

A) ProRes 4444 12 Bit
B) DNxHD 220 10 Bit
C) DPX 8 Bit
D) DNxHD 145 8 Bit

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

Solutions: