2022 Realistic Exam4Free E20-555 Dumps PDF - 100% Passing Guarantee
Free EMC E20-555 Exam Questions and Answer
NEW QUESTION 14
A potential customer has 540TB Raw capacity of NetApp running in ONTAP 7-Mode. They are willing to let you gather some workload data. Their authentication sources are LDAP and Active Directory. Their users are 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 tool(s) would you use next to complete your sizing?
- A. Isilon Cluster Sizing Tool
- B. MiTrend WPA, Autosupport, and PerfCollect
- C. Isilon Insight IQ, OnCommand Insight, and nfsstat
- D. Wireshark, isi statistics, and iostat
Answer: B
NEW QUESTION 15
Which impact policies are available on an Isilon cluster?
- A. High, Medium, Low, Default
- B. High, Medium, Low, Auto
- C. High, Medium, Low, Paused
- D. ASAP, High, Medium, Low
Answer: C
NEW QUESTION 16
-- 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. 1.2 TB
- B. 14.4 TB
- C. 4.8 TB
- D. 9.6 TB
Answer: D
NEW QUESTION 17
-- 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 has a limited budget. What would be the best price/performance solution for their active data?
- A. 17 X-Series nodes with SSD drives and 48GB of RAM.
- B. 14 X-Series nodes with no SSD drives and 96GB of RAM
- C. 12 X-Series nodes with no SSD drives and 24GB of RAM
- D. 14 NL-Series nodes with 24GB of RAM
Answer: B
NEW QUESTION 18
Which Isilon SmartLock version uses an NTP server to keep track of the set retention periods placed on a directory?
- A. Standard No WORM
- B. Enterprise
- C. Standard with WORM
- D. Compliance
Answer: B
NEW QUESTION 19
What is the recommended namespace path for the access zone on a new Isilon cluster with SyncIQ license?
- A. /ifs/<Cluster-Name>/<Access-Zone_Name>/data
- B. /ifs/<Access-Zone_Name>/data
- C. /ifs/<Access-Zone_Name>/<Cluster-Name>/data
- D. /ifs/<Cluster-Name>/data
Answer: D
Explanation:
Reference:
https://www.dellemc.com/en-us/collaterals/unauth/technical-guides-support-information/2019/09/ docu95372.pdf
NEW QUESTION 20
For concurrent I/O, how do SmartCache and Endurant Cache differ?
- A. SmartCache immediately commits the write to NVRAM on the local node and one peer node
- B. SmartCache uses sub-file, granular locking whereas Endurant Cache locks the entire file
- C. Endurant Cache waits for acknowledgement from all nodes before copying to L2 cache
- D. Endurant Cache sends an acknowledgement to the client immediately after mirroring writes in NVRAM
Answer: D
Explanation:
Explanation/Reference:
NEW QUESTION 21
Given a 5-node Isilon cluster configured with an N+2 protection level, how many nodes can be offline with the data accessible and fully writeable?
- A. 0
- B. None
- C. 1
- D. 2
Answer: C
NEW QUESTION 22
A customer environment is used for analytics on very large datasets. They are interested in using Isilon storage and Hadoop but are concerned about the costs.
How does Isilon change the scalability of a Hadoop environment?
- A. JobTracker and TaskTracker are offloaded to the Isilon cluster
- B. NameNode and DataNode are offloaded to the Isilon cluster
- C. NameNode and JobTracker are offloaded to the Isilon cluster
- D. DataNode and TaskTracker are offloaded to the Isilon cluster
Answer: B
NEW QUESTION 23
A customer wants to add Unix users to their cluster, and requires that NFS access be fault-tolerant.
What would you recommend?
- A. Use NFS v3 and dynamic IP addressing with SmartConnect Basic
- B. Use NFS v4 and dynamic IP addressing with SmartConnect Basic
- C. Use NFS v4 and dynamic IP addressing with SmartConnect Advanced
- D. Use NFS v3 and dynamic IP addressing with SmartConnect Advanced
Answer: C
NEW QUESTION 24
A customer needs to be able to periodically monitor their node live performance for ongoing operational tasks as well as during problem analysis. You have recommended they use the isi statistics command to fulfill this need.
What types of statistics and statuses could be displayed with this command?
- A. Node statistics, general status, drive status, hardware statistics
- B. Protocol status, drive statistics, hardware statistics, node statistics
- C. Node alerts, Job Engine statistics, hardware status, protocol statistics
- D. Drive statistics, node status, protocol alerts, general performance
Answer: B
Explanation:
Explanation/Reference: http://isilon-lab.blogspot.com/2017/08/isilon-performance-metrics-hints.html
NEW QUESTION 25
A customer has installed an Isilon Gen 6 cluster as a Proof of Concept. Before making a purchase decision, they would like to compare the performance of the Isilon to competitive offerings.
Which tool can be used to provide data analysis and benchmarking through existing workflows?
- A. lometer
- B. IOZone
- C. Wireshark
- D. ClarityNow!
Answer: B
Explanation:
Explanation/Reference: http://ftp.dell.com/manuals/all-products/esuprt_solutions_int/ esuprt_solutions_int_solutions_resources/high-computing-solution-resources_White-Papers24_en-us.pdf
NEW QUESTION 26
A customer plans to replace an existing array that is supported by the MiTrend Workload Profile Assessment (WPA) service. You receive performance data from the customer and run a WPA report that shows the array has 50TB of usable capacity.
In discussions with the customer, you learn the content is comprised of four million 6MB files and 400 million
64KB files. The customer explains they have a small budget and very limited rack space available in their datacenter. Performance is not a concern because the files are rarely accessed.
Which configuration provides the needed usable capacity using N+2:1 protection, and requires the least amount of rack space?
- A. 6 x X200 nodes with 1TB Drives
- B. 5 x X200 nodes with 1TB Drives
- C. 3 x NL400 nodes with 2TB Drives
- D. 3 x X400 nodes with 1TB Drives
Answer: C
NEW QUESTION 27
What is the overhead impact on the physical capacity when configuring data protection at +2:1 on a 6-node Isilon cluster?
- A. 1/4
- B. 1/5
- C. 1/2
- D. 1/6
Answer: B
NEW QUESTION 28
-- Exhibit --
A European Sports TV network is considering Isilon for their Media Edit Storage for their editing workloads.
They are also considering Isilon for near-line media archiving.
The network receives XDCAM HD footage which is loaded onto their existing Transcoding Storage platform. New footage that needs to be edited will be transferred from their Transcoding Storage platform to the proposed Media Edit Storage platform at the rate of ten simultaneous XDCAM HD files via FTP.
Edited files will be transferred back to the Transcoding Storage platform at the rate of ten simultaneous XDCAM HD files via FTP.
The network currently has 15 Final Cut Pro edit stations, 15 Avid edit stations. Proxy software will be used to allow Isilon to act as the storage for the Final Cut Pro and Avid media. Three of those edit stations will be performing content compositing as needed.
The network expects 70 hours of new content per week, and 50 hours of edited content per week. They intend to keep the new and edited content on the proposed Media Edit Storage as a performance tier for
30 days. They would like to retain all new and edited footage proposed Media Edit Storage as a near-line tier for two years.
In addition to the current workloads, the network expects to implement a new Media Asset Management (MAM) solution and has requested the Isilon cluster be capable of supporting 120 MBps read and 120 MBps write to support the MAM requirements.
-- Exhibit --
Refer to the exhibit.
Based on the described use of the cluster, which node combination is the appropriate choice for the customer's requirements?
- A. 4 x S200 nodes with 5 x NL 400 nodes
- B. 4 x X200 nodes with 4 x NL 400 nodes
- C. 4 x S200 nodes with 4 x NL 400 nodes
- D. 4 x X400 nodes with 4 x NL 400 nodes
Answer: D
NEW QUESTION 29
A customer created one month of snapshots; one snapshot every 8 hours for 30 days on an Isilon cluster using SnapshotIQ. They are now deleting the snapshots randomly and experiencing overhead to the cluster.
How can the snapshots be removed while avoiding the overhead caused by this process?
- A. Remove the directory
- B. Delete the snapshots in order
- C. Use SmartPools to move the snapshot data to a different tier
- D. Snapshots cannot be deleted
Answer: B
NEW QUESTION 30
A customer has an SMB file directory with 375 TB of data on the primary cluster with a protection level of N+3:1. They want to replicate this directory to the secondary cluster. They are interested in the possibility of setting protection levels on the target cluster.
Which target directory protection level information can be provided?
- A. Does not need to match the source and is configured separately on the target cluster
- B. Cannot be altered and is controlled by SyncIQ
- C. Can be altered by the command line interface and is controlled by SyncIQ
- D. Must match the source and is configured separately on the target cluster
Answer: A
NEW QUESTION 31
Refer to the exhibit.
You want to add redundancy to your network configuration, rather than performance. You have configured all interfaces into the default SmartConnect zone.
How should you configure the switches and Isilon networking to provide your desired network redundancy?
- A. Configure the switch ports as access points, bond ext-0 and ext-1 on all nodes and use Active/Passive aggregation for subnet0:pool0.
- B. Configure the switch ports for LACP and use LACP aggregation for subnet0:pool0.
- C. Configure the switch ports for LACP and use FEC aggregation for subnet0:pool0.
- D. Configure the switch ports as access points and use LACP aggregation for subnet0:pool0.
Answer: B
NEW QUESTION 32
Your customer has an existing Isilon cluster with seven X200 nodes. The cluster is used to store home directories and departmental shared folders. They are planning to deploy a new application that generates small block, synchronous writes.
Which OneFS 7 capability can help reduce latency for the new workload?
- A. L2 Cache
- B. Prefetcher
- C. Solid State Drives
- D. Endurant Cache
Answer: D
Explanation:
Reference:http://isilonblog.emc.com/diving-deeper-into-isilon-onefs-7-0/(performance, third para)
NEW QUESTION 33
-- Exhibit -
A large manufacturing company is an existing Isilon customer with a cluster consisting of four NL400 nodes with 4TB drives. The cluster is using N+2:1 protection level and the file system shows that it is 60% utilized. Home directories and file shares comprise 75% of the existing content and the remainder is inactive deep archive. The company has 1,000 employees using Windows and Mac clients participating in a single Active Directory (AD) forest.
During a meeting with the CIO and Director of IT you discuss the company's recent acquisition - an engineering firm that specializes in Computer Aided Design (CAD). The engineering firm has 400 UNIX workstations that produce technical drawings which are currently stored on another vendor's SAN solution. The all UNIX environment uses NIS for authentication and name resolution. They do not currently use DNS or LDAP. The engineering company has an old storage system that has been experiencing problems and the CIO would like you to migrate the data onto the Isilon cluster. The CIO would like to eliminate all tape and recover the data onto disk.
The CIO is concerned about security of the company's intellectual property, especially with the rapid adoption of mobile devices and external cloud content sharing services such as DropBox, Egnyte, and SugarSync. They would like to implement an alternative that provides external file sharing and mobile device synchronization while maintaining security control over the company's data.
The Director of IT reports that users are storing non-work related content on the Isilon cluster. They would like to limit the amount of capacity that each user can consume in their home directory and want to ensure you provide the capability to easily visualize which users are over their allotment.The company's Windows users currently leverage Windows Shadow Copy to recover files that have been accidentally deleted. The IT department wants to ensure that Mac and incoming UNIX clients have the same functionality.
The Director of IT also mentions that users are reporting slow response times when browsing their home directories and shared folders. They are concerned that Isilon cannot scale to support their combined requirements.
-- Exhibit -
Based on the meeting with the customer, which Isilon cluster configuration would you recommend?
- A. 4 x NL400 nodes with 36 x 4TB drives
- B. 4 x X400 nodes with 2 x SSD and 34 x 4TB drives 1 x Additional NL400
- C. 6 x X400 nodes with 36 x 4TB drives 1 x Backup Accelerator
- D. 9 x S200 nodes with 2 x SSD and 22 x 900GB SAS
Answer: B
NEW QUESTION 34
If a customer experiences a node failure while at 90% capacity, what is the fastest way of replacing the node in an Isilon cluster?
- A. Perform a disk SmartFail
- B. Perform Disk Tango
- C. Perform FlexProtect
- D. Perform a node SmartFail
Answer: D
NEW QUESTION 35
When planning a new cluster using backend leaf-spine topology, what is the maximum number of nodes supported when using two leaf switches and one spine switch?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
Reference:
https://www.dellemc.com/resources/en-us/asset/white-papers/products/storage/h17682-dell-emcpowerscale- leaf-spine-network-best-practices.pdf (6)
NEW QUESTION 36
A Media and Entertainment company is considering changing from 2K resolution to 4K resolution. They will continue to use the DNxHD 220 codec.
Assuming everything else stays the same, how will this change affect storage?
- A. Storage will be twice as large
- B. Storage will be half as large
- C. Storage will be four times as large
- D. Storage requirements will not change
Answer: D
NEW QUESTION 37
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