E20-555 Exam - Isilon Solutions and Design Specialist Exam for Technology Architects

NEW QUESTION 1
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 Disk Tango
• B. Perform a disk SmartFail
• C. Perform FlexProtect
• D. Perform a node SmartFail

Answer: D

NEW QUESTION 2
A customer is trying to read data from Node 1 to Node 5 in an Isilon cluster. The two Isilon nodes have the same content in the private caches. Cached data is consistent across both instances. What is the correct sequence of steps that OneFS uses to ensure that all data is consistent across the entire shared cache?

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
Reference https://www.emc.com/collateral/hardware/white-papers/h13249-isilon-onefs-smartflash-wp.pdf

NEW QUESTION 3
You are setting up SmartPools on the cluster. Which Microsoft Windows system tool will illustrate the difference in performance experienced by clients connecting to different tiers of storage?

• A. IOZone
• B. Iometer
• C. iostat
• D. MiTrend

Answer: A

NEW QUESTION 4
You are helping a customer create a cost-effective Isilon solution. The customer environment includes high IOPS-intensive, random access file-based applications.
Which Isilon storage node type will meet the customer's needs?

• A. S-Series
• B. NL-Series
• C. X-Series
• D. Performance Accelerator

Answer: A

NEW QUESTION 5
When designing Isilon solutions, what issues should you pay special attention to?

• A. Avoid being too enthusiastic over the technologyBalancing technical and business requirementsProvide OptionsDesign to meet customer expectations
• B. Workflow DocumentSolutions DocumentApplication typesData strategy
• C. Solutions DocumentBalancing technical and business requirementsProviding many optionsPractical v
• D. theoretical implementations
• E. Solutions DocumentBalancing technical and business requirementsDownstream hand-offDesign to meet customer expectations

Answer: A

NEW QUESTION 6
At a minimum, how many connected and available nodes are required to maintain quorum in a 25-node cluster?

• A. 10
• B. 12
• C. 13
• D. 17

Answer: C

NEW QUESTION 7
Your customer purchased an Isilon cluster with eight X400 nodes for Home Directories. Your follow-up discussions have uncovered an opportunity to expand the cluster to support the Legal Department. As you prepare to complete the Workflow Profile Document, you meet with the customer to discuss data protection.
Which key areas should you address?

• A. Default Cluster Protection LevelAdditional Directory Level ProtectionsSnapshots and Replication
• B. WORM requirementsNetwork ports for replicationSnapshots for user restores
• C. Default Cluster Protection LevelBackup Windows and ProcessesConcurrency of user access
• D. Protocols (SMB, NFS, FTP, HTTP, HDFS)Authentication and Directory ServicesPerformance and Latency Concerns

Answer: A

NEW QUESTION 8
You will be meeting with the Corporate Security Team as part of the implementation planning for a new Isilon cluster deployment. The Lead Security Analyst has asked you to discuss the Authentication Sources on your Isilon Cluster.
What customer questions regarding Isilon-supported Authentication Sources do you need to be prepared to answer?

• A. What mechanism are you using for NFS authentication?Do you have multiple AD domain support?What versions of LDAP are supported?
• B. Are you using File Services for UNIX in your AD environment?Do you support NIS+ for NFS authentication?Do you support multiple Access Zones connecting to the AD Domain?
• C. What mechanism are you using for NFS authentication?Do you support Novell Directory Services?What flavor of LDAP is supported?
• D. Is the cluster x.400 compliant?What firewall rules are in place to prevent data leakage?Is there a audit trail for access zone configuration changes?

Answer: A

NEW QUESTION 9
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. 200 MB
• C. 300 MB
• D. 600 MB

Answer: C

NEW QUESTION 10
-- 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 X400 nodes with 2 x SSD and 34 x 4TB drives1 x Additional NL400
• B. 6 x X400 nodes with 36 x 4TB drives1 x Backup Accelerator
• C. 4 x NL400 nodes with 36 x 4TB drives
• D. 9 x S200 nodes with 2 x SSD and 22 x 900GB SAS

Answer: A

NEW QUESTION 11
What determines how a user is directed to the correct secure multi-tenancy access zones?

• A. External protocols
• B. Isassd daemon
• C. External providers
• D. Incoming IP

Answer: C

NEW QUESTION 12
What key considerations should be kept in mind when designing a 300TB solution?

• A. Workflow managementDefining class of serviceTime of day servicesRPO and RTOData retention and backup
• B. Defining class of serviceTime of day servicesROI and TCOData retention and backup
• C. SmartPoolsSmartconnectSnapshotsSpace for snapshots
• D. Always include 2% SSDSmartPoolsSmartconnectSnapshotsInsightIQ

Answer: A

NEW QUESTION 13
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. Consider migrating data from Isilon to one of their SAN platforms or proposing a new solution to handle the performance requirements of SQL.
• B. 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.
• 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: A

NEW QUESTION 14
A telecommunications company has a substantial amount of data. This data is being created by network elements within their environment.
The company wants to change the way the network elements Call Detail Records (CDR) are stored and analyzed. The existing infrastructure consolidates all of the CDRs into a table structure, and then ingests them into a large database. Once ingested, a query engine accesses the database and performs analysis on these files. The system is functional; however, since the amount of CDRs generated will increase exponentially over the next year, the company is open to alternatives for storing and analyzing these records.
In evaluating alternatives, the key requirements are to reduce cost, the amount of storage, and the amount of time to analyze the data. The customer would like to use Hadoop to analyze the CDRs.
After you have conducted an assessment of the workflow, you have recommended an Isilon Cluster to work within the Hadoop environment.
Which protocols would be the best fit when using Isilon for this customer's Hadoop workflow?

• A. NDMP and SCP
• B. NFS and HDFS
• C. CIFS and FTP
• D. SyncIQ and HTTP

Answer: B

NEW QUESTION 15
You meet a customer for the first time. They explain that their current environment for NAS does not meet their needs. You want to make sure that Isilon is a good fit for their needs.
What would be a good prequalifying question to ask?

• A. Where will the data center be installed?
• B. How many concurrent clients are accessing your NAS?
• C. How many users are in your Directory Services?
• D. Are you currently using a UPS for your main power source?

Answer: B

NEW QUESTION 16
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. Five X400 (66 TB) 48 GB RAM, 1.2 TB SSD, N+2:1
• B. Eight X200 (27 TB) 12 GB RAM, 600 GB SSD, N+2
• C. Eight X200 (27 TB) 48 GB RAM, 600 GB SSD, N+2:1
• D. Eight X200 (36 TB) 48 GB RAM, no SSD, N+2:1

Answer: C

NEW QUESTION 17
What is the maximum volume or aggregate size that can be created with an Isilon Scale-Out NAS system?

• A. 16 TB
• B. 100 TB
• C. 2.3 PB
• D. 20 PB

Answer: D

NEW QUESTION 18
In Isilon OneFS, what is the snapshot limit of a directory?

• A. 512
• B. 1024
• C. 2048
• D. No limit

Answer: B

NEW QUESTION 19
A hospital is considering using Isilon to store their long-term archive data for their GE PACS application. They currently have two million 17 MB studies. They expect capacity requirements to be 50% compounded growth per year. They plan to use N+2:1 protection, and would like this sized for three years of growth.
Which minimum cluster configuration would meet this customer's environment?

• A. Five NL400 (1 TB drive) nodes
• B. Four NL400 (2 TB drive) nodes
• C. Five X200 (3 TB drive) nodes
• D. Three X400 (3 TB drive) nodes

Answer: A

NEW QUESTION 20
When a Gen 6 Isilon cluster receives a file to be stored, which node(s) performs the FEC calculation?

• A. First node in each node pair
• B. Node that will be holding the FEC
• C. Node to which data was initially sent
• D. Each node in the cluster

Answer: A

NEW QUESTION 21
An Isilon customer is experiencing less than expected performance and poor space utilization with their cluster. They are using the X400 nodes with an N+2d:1n protection policy to host web server log data. Upon further analysis, the customer discovers that the web servers write log files 64KiB in size. The log files are then accessed by an analytics application for reporting purposes. What should be done to increase the write performance of the cluster?

• A. Change the protection scheme to a mirroring policy
• B. Add S-Series storage nodes to the cluster
• C. Add A-Series Performance Accelerator nodes to the cluster
• D. Change the SSD strategy on the cluster

Answer: C

NEW QUESTION 22
A company wants to reduce the footprint in their data center. They recently completed a proof of concept with Hadoop using Direct Attached Storage (DAS) for their Big Data initiative. You have determined that incorporating an Isilon cluster into their Hadoop environment would help in reducing this footprint.
Which Hadoop components can be consolidated onto the Isilon cluster to reduce the footprint?

• A. DataNode and NameNode
• B. DataNode and ComputeNode
• C. ComputeNode and NameNode
• D. NameNode and TaskTracker

Answer: A

NEW QUESTION 23
Refer to the exhibit.

A customer calls you and asks if you could come by and interpret their InsightIQ data. You see that namespace reads are 63% of the work load.
What would you recommend to help this cluster's namespace performance?

• A. Add SSDs
• B. Add A-Series nodes
• C. Add S-Series nodes
• D. Turn off write cache

Answer: A

NEW QUESTION 24
Which Isilon feature provides the ability to build a cluster using different node types and tiers to meet a customer's business objectives?

• A. SmartPools
• B. SmartQuota
• C. SmartConnect
• D. SnapshotIQ

Answer: A

Explanation:
Smartpools is the licensed feature that enables using different node types.

NEW QUESTION 25
You have received a critical task that requires immediate analysis of system performance. Captured data will later be processed by MiTrend, but a current assessment is not available.
Which utility will quickly provide IOPS associated with reads and writes, CPU utilization, and I/O scheduler wait time?

• A. tcpdump
• B. iostat
• C. Wireshark
• D. NFSstat

Answer: B

NEW QUESTION 26
An Isilon customer has two 5-node clusters; one for production and one for disaster recovery (DR). The customer's workflows are replicated to the DR cluster through SyncIQ on individual schedules. They shut down their production cluster for a scheduled DR test, failed over to the DR cluster, and continue their DR testing.
Assume both clusters have identical shares, exports, and user authentication. Additionally, assume the client applications have been stopped and the DNS re-pointed. Which SyncIQ Policy method should be used to continue production operations?

• A. Revert
• B. Initiate Manual Failback
• C. Initiate Automated Failback
• D. No change is needed

Answer: A

NEW QUESTION 27
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 Isilon Web interface
• B. Add 24 GB RAM to each of the X200 nodes
• C. Recreate the original pool using the command line interface
• D. Add two X200 nodes and two X400 nodes

Answer: C

NEW QUESTION 28
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