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EMC DES-1415 Exam Syllabus Topics:

EMC Specialist - Technology Architect, PowerScale Solutions Sample Questions:

1. We have been engaged by a research hospital to help upgrade their Isilon installation. They currently have 12 previous generation Isilon nodes with 200 TB of capacity and run on a 1Gbps network.
They currently have 6 Illumina Hi-Seq Sequencers and an HPC cluster to process dat a. They would like to expand Isilon to 2 PB of active data and 1 PB 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.
Before making any changes, the customer would like a graphical presentation of their existing array performance to present to management. What is the best tool to gather this information?
Response:

A) InsightIQ
B) netstat
C) tcpdump
D) isi_netlogger

2. A customer is considering using the CloudPools feature to send archive data to their on premises object storage appliance. The customer needs to know how many objects will be created by the Isilon when it tiers files using CloudPools.
If the customer has 20 1MB files, 2 10MB files and 4 3MB files, how many objects will CloudPools version 1.0 create?
Response:

A) 336
B) 26
C) 5376
D) 52

3. Which Isilon feature increases available space by consolidating copies of identical blocks of data?
Response:

A) SmartQuotas
B) SmartDedupe
C) Compliance
D) FlexProtect

4. 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?
Response:

A) 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.
B) 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.
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.

5. What key considerations should be kept in mind when designing a 300TB solution?
Response:

A) Always include 2% SSD SmartPools Smartconnect Snapshots InsightIQ
B) SmartPools Smartconnect Snapshots Space for snapshots
C) Workflow management Defining class of service Time of day services RPO and RTO Data retention and backup
D) Defining class of service Time of day services ROI and TCO Data retention and backup

Solutions: