E20-555 Free Practice Test

The data access pattern on a Gen 6 Isilon cluster in Concurrency. What describes this workload?

1. A. Multiple stream workflows, no prefetching
2. B. Multiple clients accessing the same data; aggressive prefetching
3. C. Multiple clients accessing the same data; moderate prefetching
4. D. Single stream workflows, aggressive prefetching

Correct Answer: D

A potential customer has about 540TB of NetApp running in ONTAP 7-Mode. They are willing to let you gather some workload data. They have LDAP and Active Directory authentication and primarily Windows
Clients. They are very interested in Automated Tiering and Large Scale Archives. They are not certain about the workflows from the Marketing Department. The Content Team will only say they need to acquire 300 TB within 90 days. They do not know the average file size or the number of aggregates they are managing.
Which tools would you use to gather information to do your Isilon sizing?

1. A. MiTrend WPA, Autosupport, and PerfCollect
2. B. isi status, isi_netlogger, and PerfMon
3. C. Wireshark, isi statistics, and iostat
4. D. Isilon Insight IQ, OnCommand Insight, and nfsstat

Correct Answer: A

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?

1. 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.
2. B. 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.
3. C. 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.
4. D. 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.

Correct Answer: A

Which impact policies are available on an Isilon cluster?

1. A. High, Medium, Low, Default
2. B. High, Medium, Low, Paused
3. C. High, Medium, Low, Auto
4. D. ASAP, High, Medium, Low

Correct Answer: B

At which level can retention periods be applied with Isilon SmartLock?

1. A. Directory
2. B. Node
3. C. File system
4. D. Cluster

Correct Answer: D