Exam Questions and Answers for E20-555 Study Guide Questions and Answers!
Isilon Solutions and Design Specialist Exam for Technology Architects Certification Sample Questions and Practice Exam
NEW QUESTION 181
An Isilon customer's administrator created the nested directory structure, shown in the exhibit, using SmartQuotas. However, a user needs to write an additional 650 GB of data to "/ifs/data/acct/recv".
Which steps will enable the user to complete this task?
- A. Directory1 QuotA.Increase to 1350 GB User QuotA.Decrease to 1000 GB on Subdirectory1
- B. Directory1 QuotIncrease to 1400 GB User QuotIncrease to 1000 GB on Subdirectory2
- C. User QuotA.Decrease to 650 GB on Subdirectory2 Directory1 QuotA.Decrease to 1650 GB
- D. User QuotA.Decrease to 400 GB on Subdirectory1 Directory1 QuotA.Increase to 1650 GB
Answer: B
NEW QUESTION 182
Refer to the exhibit.
A customer calls you and asks if you could come by and interpret their InsightIQ dat a. You see that namespace reads are 63% of the work load.
What would you recommend to help this cluster's namespace performance?
- A. Add S-Series nodes
- B. Turn off write cache
- C. Add A-Series nodes
- D. Add SSDs
Answer: D
NEW QUESTION 183
A customer is inquiring about expanding their primary cluster consisting of six S-Series nodes in order to improve performance. They have a second cluster with 11 X-Series nodes. Both clusters leverage 1GbE, but the customer recently installed a 10GbE network that can be utilized. They also have multiple Fibre Channel SAN arrays in their environment.
They have a variety of workloads on each cluster and are in the process of determining which workloads belong on which cluster. They have discovered that one of the workloads- a SQL database that resides on the X-Series node cluster - is experiencing timeouts due to latency. The database vendor has suggested limiting latency to 5ms or less to eliminate these timeouts.
How do you advise the customer?
- A. Merge the S-Series nodes and X-Series nodes into one cluster, upgrade the 1GbE to 10GbE, and leverage SmartPools to allow for the cluster to determine where data should reside.
- B. Consider migrating data from Isilon to one of their SAN platforms or proposing a new solution to handle the performance requirements of SQL.
- C. Suggest the customer consider leveraging SSDs in the new nodes they purchase and GNA to boost the performance of each cluster.
- D. Recommend they increase the amount of DRAM in the cluster or consider an Accelerator node in order to increase the amount of cache in their cluster.
Answer: B
NEW QUESTION 184
Which SyncIQ policy is required if the goal is to have all source data replicated and to retain deleted files?
- A. Async Policy
- B. Sync Policy
- C. AutoBalance Policy
- D. Copy Policy
Answer: B
Explanation:
Reference:
https://www.dellemc.com/resources/en-us/asset/white-papers/products/storage/ h8224_replication_isilon_synciq_wp.pdf
NEW QUESTION 185
A customer has two data centers (Site A and Site B) and in each data center there is an Isilon cluster.
They are replicating data between the sites using SyncIQ.
You have been reviewing their disaster recovery plan and found the following:
The policies specify that SyncIQ runs a replication job every four hours and that the job finishes within
one hour.
Three additional hours will be needed to get servers and the network redirected to work from Site B.
What is the Recovery Point Objective in this plan?
- A. 5 hours
- B. 6 hours
- C. 4 hours
- D. 3 hours
Answer: C
NEW QUESTION 186
You are reviewing an opportunity with a trusted advisor. You both discover gaps in the initial solution design.
Each iterative discussion with the customer helps you define the solution better. The documents produced capture the customer's requirements.
What else needs to occur to refine the sizing considerations?
- A. Complete your Solution Design Document and forward to EMC consulting.
- B. Validate the Workflow Profile Assessment and test the solution against your findings.
- C. Provide the CIO with the findings and gain commitment to a Proof of Concept.
- D. Review you assumptions and ask the customer what business issue you're solving.
Answer: B
NEW QUESTION 187
What is appropriate for capturing packets for later analysis of I/O request sizes and randomness on Isilon clusters?
- A.
- B. iostat
- C. Mitrend
- D. Wireshark
tcpdump
Answer: D
NEW QUESTION 188
Your customer has a new business unit. They are gathering web log files to be analyzed. They are using Hadoop to do the analysis of the logs. The IT department is centrally storing the log files on a 5-node Isilon cluster. They have enabled the Hadoop cluster to access the files directly on the Isilon storage. The nodes are X400's with two SSD drives in each node and 96GB of RAM.
How many DataNodes does the Isilon cluster have?
- A. Five
- B. Two
- C. Three
- D. One
Answer: A
NEW QUESTION 189
Independent of protocol, what does Isilon OneFS use to translate identities?
- A. Access Zone
- B. Role-based access control
- C. SmartLock
- D. ID mapping stack
Answer: D
NEW QUESTION 190
Which Isilon tool can be run from the cluster to display Isilon statistics such as CPU activity?
- A. InsightIQ
- B. iperf
iostat - C.
- D. MiTrend
Answer: A
Explanation:
InsightIQ 4.1 introduces a new report that displays statistics
Reference: https://www.emc.com/collateral/software/data-sheet/h8317-ds-isilon-insightiq.pdf
NEW QUESTION 191
What is the smallest unit of manageable storage within Isilon SmartPools?
- A. Node pool
- B. SSD pool
- C. Disk pool
- D. File pool
Answer: C
Explanation:
Explanation/Reference:
Reference: http://www.emc.com/collateral/hardware/white-papers/h8321-wp-smartpools-storage-tiering.pdf (page 7, see disk pools)
NEW QUESTION 192
When an Isilon SyncIQ replication job completes, how many SnapshotIQ policies can be created on a target cluster directory?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 193
The protection level of an Isilon Gen 6 cluster with eight nodes has been set to the default protection level.
How many failures are tolerated without data loss?
- A. Three drives or three nodes
- B. Two drives in every node
- C. Two drives or one node
- D. Two drives and one node
Answer: C
NEW QUESTION 194
Which Isilon OneFS administration methods are enforced by RBAC?
- A. Command line, web administration interface, and SNMP
- B. SNMP and web administration interface
- C. Command line, InsightIQ, and web administration interface
- D. Platform API, command line, and web administration interface
Answer: D
NEW QUESTION 195
A customer has 10 files that are each 10 MB in size. They created two clones of each file on their source cluster. They now want to use SyncIQ to replicate the original files and the cloned files to a target cluster.
Excluding protection overhead, how much disk space will the files use on the target cluster?
- A. 100 MB
- B. 600 MB
- C. 200 MB
- D. 300 MB
Answer: D
Explanation:
Explanation
NEW QUESTION 196
What is the overhead impact on the physical capacity when configuring data protection at +2:1 on a 6-node Isilon cluster?
- A. 1/5
- B. 1/2
- C. 1/4
- D. 1/6
Answer: A
NEW QUESTION 197
An architect is designing a new cluster. The cluster contains H500 nodes to store home directories of 2000 users and A200 nodes to store backups of VMware virtual machines.
Which data access patterns should be used?
- A. Random for the H500 nodes
Streaming for the A200 nodes - B. Concurrency for the H500 nodes
Streaming for the A200 nodes - C. Streaming for the H500 nodes
Concurrency for the A200 nodes - D. Streaming for the H500 nodes
Random for the A200 nodes
Answer: D
NEW QUESTION 198
Refer to the exhibit.
You are analyzing a customer's existing Isilon environment using isi statistics in order to expand the cluster. When examining the protocol subcommand, you see the output as shown in the exhibit.
What does the data tell you about the workload?
- A. It uses large read requests.
- B. It is mostly sequential reads.
- C. It contains mostly random writes.
- D. It is metadata intensive.
Answer: D
NEW QUESTION 199
An Isilon customer expressed an interest in more effectively managing their storage. Specifically, they would like to plan for future growth.
Which tool would allow the customer to forecast capacity requirements?
- A. InsightIQ
- B. SyncIQ
- C. SmartPools
- D. Isilon SNMP MIB
Answer: A
NEW QUESTION 200
You are asked to size a cluster for a file sharing environment. nfsstat indicates that 75% of the requests are namespace operations (e.g., GETADDR, SETADDR). There will be 8,000 active Linux users, connecting over NFS.
Which cluster configuration would you recommend?
- A. Eight X200 (27 TB) 12 GB RAM, 600 GB SSD, N+2
- B. Eight X200 (36 TB) 48 GB RAM, no SSD, N+2:1
- C. Eight X200 (27 TB) 48 GB RAM, 600 GB SSD, N+2:1
- D. Five X400 (66 TB) 48 GB RAM, 1.2 TB SSD, N+2:1
Answer: C
NEW QUESTION 201
What determines the number of job engine workers assigned to a task?
- A. Job phase
- B. Job task
- C. Job priority
- D. Job impact policy
Answer: A
NEW QUESTION 202
A company wants to have their new Gen 6 Isilon cluster benchmarked for a UNIX environment. What commonly available open source tool is typically used to test an Isilon cluster's performance for this environment?
- A. sar
- B. Iometer
- C. IOZone
- D. Perfmon
Answer: B
NEW QUESTION 203
Which Isilon tool can be run from the cluster to display Isilon statistics such as CPU activity?
- A. InsightIQ
- B. iostat
- C. iperf
- D. MiTrend
Answer: A
Explanation:
InsightIQ 4.1 introduces a new report that displays statistics
References:
NEW QUESTION 204
A customer is looking for a NAS solution to support their read-intensive application.
This solution must meet the following requirements:
* 1000 users
* Aggregate bandwidth of 5 GB/s
* 500 TB of user data
* Typical latency of 5 ms.
The files are distributed evenly across 10 directories.
Which cluster configuration would best meet these requirements?
- A. Seven X400 (108 TB) nodes with no SSD
- B. Twenty-five X200 (30 TB) nodes with 800 GB SSD
- C. Eight NL400 (96 TB) nodes with 1.6 TB SSD
- D. Eight X400 (96 TB) nodes with 1.6 TB SSD
Answer: C
NEW QUESTION 205
A customer's cluster contains three X200 (24 GB RAM, 3 TB drives) nodes, and three X400 (48 GB RAM, 1 TB drives) nodes. All nodes are configured in a single pool. All data is protected at N+2. After upgrading OneFS to 7.0, the Isilon Web interface indicates that files are not fully protected.
What should be done to correct this situation?
- A. Recreate the original pool using the command line interface
- B. Recreate the original pool using the Isilon Web interface
- C. Add two X200 nodes and two X400 nodes
- D. Add 24 GB RAM to each of the X200 nodes
Answer: A
NEW QUESTION 206
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