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EMC E20-554 Exam Syllabus Topics:

EMC Isilon Design Specialist Exam for Technology Architects Sample Questions:

1. You are sizing an Isilon cluster for a new customer. Analyzing their workflow you determine that they have a large block random read workload.What is the most important factor to consider when sizing this solution?

A) IOPS
B) Bandwidth
C) Headroom
D) Latency

2. A potential customer requires 800 TB of usable capacity to store medical images for their network of health clinics. The IT department has limited staff and currently manages four storage arrays from other vendors. During a meeting with the Director of IT you learn that the company is considering a solution from a competitor of EMC using two of the existing arrays and two new arrays.Which Isilon capabilities would show a better ROI for the customer?

A) Isilon has 6%-12% less filesystem overhead than traditional clustered filesystem solutions.
With a single filesystem and virtual capacity for drive and node failures, Isilon utilization is typically
80% or higher.
Isilon utilization is typically 80% or higher due to use of a single filesystem and virtual capacity for
drive and node failures.
B) Isilon has 15%-20% less overhead than traditional clustered filesystems.
According to an IDC study, Isilon utilization is nearly 50% higher than traditional competitors.
Isilon QOS headroom and multiple node pools ensures consistent performance up to 80%
utilization.
C) With a single filesystem and virtual capacity for drive and node failures, Isilon utilization is typically
80% or higher.
OneFS compression results in higher effective capacity within the cluster.
Traditional clustered filesystems require 4%-10% internal overhead compared to Isilon virtual
capacity.
D) Forward Error Correction overhead is 7% lower than traditional RAID.
Isilon has 6%-12% less filesystem overhead than traditional clustered filesystem solutions.
According to an IDC study, Isilon improves IT productivity by nearly 50% compared to traditional competitors.

3. Which protocols are supported by IsilonOneFS for file access?

A) HDFS, NFS, iSCSI, SNMP
B) NFS, HDFS, HTTP, SMB
C) SMB, HTTP, SMTP, HDFS
D) FTP, NFS, SMB, FC

4. A customer has eight X400 24GB RAM nodes that support 400 client connections. They will be adding 400 more clients in the next few months. They are looking at adding an A-Series node to the cluster to help with client connections.Before they start adding client connections, what hardware change do you recommend?

A) Add an A100 node to offset concurrent client connections
B) Add nodes with SSD to help with connections
C) Add RAM to the nodes to offset concurrent client connections
D) Add more network switches to increase the number of connections

5. Refer to the exhibit.

Your customer has three different clusters. File systems on two of the clusters are at 90% full, and the largest cluster is 10% full. Active data resides on the largest cluster. The customer has five different node types totaling 2PB and 54 nodes. Nodes from left to right are as shown:
1. X200
2.12000X
3.36000X
4.NL108
5.108NL
They have a Smartpool license and believe that tiering data would help free up needed space.
After talking with the customer and explaining the use of SmartPools, how would you recommend optimizing utilization across all of the nodes that the customer owns?

A) Attach all nodes to a common Infiniband switch.
B) Borrow nodes to reconfigure the cluster and migrate the data to new cluster.
C) Explain to the customer that this will result in data loss.
D) Go to GUI and put alike nodes in the same pools. Then name them.

Solutions: