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  • Exam Name: Isilon Solutions and Design Specialist Exam for Technology Architects
  • Last Update: May 27, 2024
  • Questions and Answers: 344
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E20-555 Practice Exam Questions with Answers Isilon Solutions and Design Specialist Exam for Technology Architects Certification

Question # 6

A customer currently has 10 HPC nodes. They plan to purchase a 5-node Isilon X400 cluster for an HPC application running on Linux. They will persistent mount the Isilon cluster through NFSv3.

Which recommended configuration addresses the customer's requirements for high availability and throughput?

A.

SmartConnect Advanced with Round Robin connection balancing and dynamic addressing

B.

SmartConnect Basic with Round Robin connection balancing and dynamic addressing

C.

SmartConnect Advanced with Network Throughput connection balancing and dynamic addressing

D.

SmartConnect Advanced with Round Robin connection balancing and static addressing

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Question # 7

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

Full Access
Question # 8

How much space is consumed by a 4 KB file when the file data is written to the Isilon cluster?

A.

4 KB

B.

8 KB

C.

16 KB

D.

32 KB

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Question # 9

In your second meeting with the customer you ask the following questions about their current unified SAN and NAS platform.

"Are you using an application to map users from NFS Exports to SMB shares? Is each site a separate LDAP or AD Domain?"

What functionality are your trying to understand in their environment and what is the comparable feature in Isilon OneFS?

A.

Identity Mapping and Authentication Sources

B.

User Management and AD Authentication

C.

Kerberos Infrastructure and Identity Management

D.

NFS Export Management and OneFS Cluster Management

Full Access
Question # 10

A customer has a cluster consisting of six H500 nodes (in one full chassis and one half populated chassis) and

four A200 nodes (in one full chassis). The customer wants to expand their A200 nodes.

What is the minimum number of A200 nodes and chassis the customer can add to the cluster?

A.

2 nodes; 0 chassis

B.

2 nodes; 1 chassis

C.

4 nodes; 1 chassis

D.

4 nodes; 2 chassis

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Question # 11

A customer plans to deploy N+2:1 protection on a 5-node Isilon cluster. How much capacity will be used to store a 320 KiB file?

A.

320 KiB

B.

448 KiB

C.

576 KiB

D.

640 KiB

Full Access
Question # 12

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

Full Access
Question # 13

A cost-conscious customer is exploring Isilon for their PACS archive. The workflow consists of one hundred cases a day, each including fifty 60MB image files. However, each image will have five-hundred 64kB metadata files associated with it. They currently have six years worth of archived data. They will need to migrate to the new solution and they need to plan for an additional three years of archive capacity.

Which solution would you recommend to fit their capacity needs?

A.

24 NL-Series nodes with N+3 protection policy providing 2597 TiB of useable capacity

B.

18 NL-Series nodes with N+2:1 protection policy providing 2078 TiB of useable capacity

C.

24 X-Series nodes with N+3 protection policy providing 2597 TiB of useable capacity

D.

12 NL-Series nodes with N+2 protection policy providing 1300 TiB of useable capacity

Full Access
Question # 14

What is the sector size of an Isilon 8 TB drive?

A.

512 bytes

B.

1024 bytes

C.

2048 bytes

D.

4096 bytes

Full Access
Question # 15

What is a characteristic of predefined sets of privileges of OneFS built-in administrator roles?

A.

Can be modified without limitation

B.

Can be nested into other roles

C.

Cannot be modified

D.

Can be modified by selected users

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Question # 16

-- 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 --

Which configuration changes would you recommend for the Engineering users?

A.

Direct all clients to use the Manufacturing DNS server and connect NFS mounts to the FQDN of the Isilon cluster.

B.

Mount an NFS share to a node on the Isilon cluster, being careful to equally distribute the load across nodes.

C.

Utilize SMB2.1 protocol and mount to the Isilon cluster using the Name Server (NS) record IP.

D.

Create an FQDN for the Isilon cluster in the LMHOSTS file for each engineering system.

Full Access
Question # 17

The security team at a customer site has created a new requirement that in-flight replication traffic must be

encrypted end-to-end. The customer is running OneFS 8.2.1 on their cluster.

What encryption protocol versions does SyncIQ support?

A.

TLS 1.3 and OpenSSL 1.1.1

B.

IPSec 2.1 and OpenSSL 1.0.2

C.

TLS 1.2 and OpenSSL 1.0.2

D.

x.509 13.37 and OpenSSL 0.9.8

Full Access
Question # 18

What is the behavior of the Isilon time and date settings and what is the best practice?

A.

SMB time sync takes precedence over the NTP service

SMB time is enabled by default on the cluster

Best Practice: do not use SMB time, use NTP for cluster and Domain Controller

B.

NTP service takes precedence over SMB time sync

SMB time is enabled by default on the cluster

Best Practice: do not use NTP time, use SMB for cluster and Domain Controller

C.

NTP service takes precedence over SMB time sync

SMB time is enabled by default on the cluster

Best Practice: do not use SMB time, use NTP for cluster and Domain Controller

D.

SMB time sync takes precedence over the NTP service

SMB time is not enabled by default on the cluster

Best Practice: do not use NTP time, use SMB for cluster and Domain Controller

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Question # 19

A potential customer uses a solution from an EMC competitor for NFS storage in their main data center. The existing arrays are five years old, and the customer would like to consolidate them into a single new system. The entire workload is generated by eight Linux hosts connected to the arrays that process video files. The customer informs you they are not able to collect performance information from the existing arrays.

Which tools can capture the workload requirements?

A.

iostat and nfsstat

B.

MiTrends and netmon

C.

netstat and esxtop

D.

Wireshark and sysstat

Full Access
Question # 20

An Isilon customer wants a job to periodically check disk sectors to ensure they can be read. What should be recommended to the customer?

A.

MediaScan

B.

IntegrityScan

C.

Dynamic Sector Repair

D.

Isilon Data Integrity

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Question # 21

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.

Streaming for the H500 nodes

Random for the A200 nodes

B.

Streaming for the H500 nodes

Concurrency for the A200 nodes

C.

Concurrency for the H500 nodes

Streaming for the A200 nodes

D.

Random for the H500 nodes

Streaming for the A200 nodes

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Question # 22

In an Isilon environment, which event will avoid Dynamic IP Address reallocation?

A.

Client is added to the cluster

B.

Failure of the back-end network

C.

Node reboot

D.

Cluster split

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Question # 23

You are asked to size a cluster for a file sharing environment. nfsstat indicates that no more than 10% of the requests are namespace operations (e.g. GETADDR, SETADDR). There will be 10,000 active Linux users, connecting over NFS.

Which cluster configuration would you recommend?

A.

Ten X200 (27 TB) 48 GB RAM, 600 GB SSD, N+2:1

B.

Five X400 (120 TB) 96 GB RAM, 2.4 TB SSD, N+2

C.

Ten X400 (60 TB) 48 GB RAM, 2.4 TB SSD, N+2:1

D.

Eight X200 (36 TB) 24 GB RAM, no SSD, N+2:1

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Question # 24

If a client is mounted to the sixth node in a 20-node Isilon cluster, how much memory cache can that client leverage assuming each node has 8 GB of memory cache?

A.

16 GB

B.

40 GB

C.

120 GB

D.

160 GB

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Question # 25

Where does SmartCache stage its write cache?

A.

SSD

B.

DISK

C.

NVRAM

D.

DRAM

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Question # 26

A customer is looking for a new storage solution to handle their growing storage requirements. The system should be able to cover storage needs for the next three years. The environment consists of 100 TBs of file system data spread across five file systems. On average, the file systems grow 1 TB a month. In addition, they have a large VMware cluster supporting 200 VMs and a highly transactional database.

The customer is looking for a solution that would provide good performance, scalability, manageability, and be cost-effective. The sales team is looking to you to recommend a solution.

Which recommendation will meet the customer’s requirements?

A.

Isilon for file system data, and a VNX for DB and VMware workloads

B.

Isilon cluster and scale-out as required

C.

VNX Unified platform with FAST Cache

D.

VMAX with FAST VP and a NAS Gateway

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Question # 27

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.

MiTrend WPA, Autosupport, and PerfCollect

B.

Isilon Cluster Sizing Tool

C.

Wireshark, isi statistics, and iostat

D.

Isilon Insight IQ, OnCommand Insight, and nfsstat

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Question # 28

A customer has two Isilon clusters in an Active-Passive setup. The customer has latency sensitive media

editing workflows. Most of the media editing work occurs prior to broadcasting between 7:00-8:00, 11:00-

12:00, 17:00-18:00 and 19:00-20:00.

What should be recommended to minimize the risk of including latency to the client workflow?

A.

Retain the default job impact policies that would run the Job Engine jobs. Do not run SyncIQ policies during

the given hours.

B.

Create and set a custom job impact policy that would exclude the running SyncIQ policies during the given

hours.

C.

Create and set a custom job impact policy that would exclude the running of the Job Engine jobs. Do not

run SyncIQ policies during the given hours.

D.

Retain the default job impact policies that would run the Job Engine jobs. Run SyncIQ policies during the

given hours.

Full Access
Question # 29

In an Isilon cluster, what is the largest number of nodes that a single file can be striped across?

A.

10

B.

20

C.

30

D.

40

Full Access
Question # 30

A company needs the ability to separate administrative rights from data access rights. Which Isilon feature enables this functionality?

A.

RBAC

B.

SmartConnect

C.

SmartLock

D.

SmartQuota

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Question # 31

You are designing an Isilon 5-node cluster configuration for a customer who wants to store user home directories on the new cluster. Each user has 100 small files of 4KB each, 100 medium sized files of 80KB each, and 100 larger files of 512KB each. How much space is occupied by the medium sized files data blocks on an N+1n cluster?

A.

9,600KB

B.

15,360KB

C.

16,000KB

D.

25,600KB

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Question # 32

Your customer has an Isilon 4-node X400 cluster used for home directory use, and has since updated to OneFS 7.0. The HR and Legal departments have been very strict about using only dedicated file servers that are part of a single, isolated, untrusted Active Directory domain. Their filer has been out of maintenance, and fears are being raised that, due to the age, it may fail at some point.

What could the IT department do, to allow the HR and Legal groups to provide file share services, with minimal impact to their other application permissions?

A.

Recommend a 2nd cluster for the HR/Legal department

B.

Utilize SmartPools to create two pools to separate the domains

C.

Consolidate onto a single cluster and merge the domains

D.

Use Access Zones for each domain

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Question # 33

You have had several discussions with your customer in the processor design industry. They have stated that they want a Scale-Out NAS platform for their design environment. Their most significant responses were "We have 125 design engineers accessing large diagrams and we need high throughput to support them. Can we also get the highest performance available? We need to stay ahead of our competitors." Other areas you discussed were their data retention policies and workflow after the chip design is completed. They plan to archive the design files but the files must stay on line.

What is your initial node recommendation?

A.

S-Series nodes for the active diagrams and NL Series nodes for the archives

B.

A-Series nodes for the active diagrams and X-Series nodes for the archives.

C.

X-Series nodes for the active diagrams and NL 400 nodes for the archives

D.

X-Series nodes with SSD for the active diagrams and NL nodes for the archives

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Question # 34

You are designing a new Isilon system to store mobile device video clips. The files average 800MB in size and the application team tells you to plan for up to 15,000 new files per day. The product manager for this new service wants enough capacity for the first year and reminds you that response time for storing and retrieving the files is important for customer satisfaction.

The files will be accessed frequently for the first 48 hours after creation, and then very infrequently after seven days. You plan to use N+2:1 protection, and will configure a SmartPools policy to move inactive files to an archive tier within the cluster.

Which configuration best fits the project requirements?

A.

4 x X200 nodes with SSD; 36 x NL400 nodes with 4TB drives

B.

38 x X400 nodes with 4TB drives and SSD

C.

4 x S200 nodes with SSD; 45 x NL400 nodes with 3TB drives

D.

4 x X400 nodes with 1TB drives; 36 x NL400 nodes with 4TB drives

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Question # 35

A customer is considering the use of RBAC to centrally administer user accounts that can log into multiple Isilon clusters. What is a potential capability for the customer?

A.

Assign users only custom roles with privileges to perform specific administrative tasks

B.

Assign individual privileges for specific administrative tasks directly to user accounts

C.

Assign users built-in or custom roles with privileges to perform specific administrative tasks

D.

Assign users only built-in roles with privileges to perform specific administrative tasks

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Question # 36

What is an accurate statement when configuring an Isilon Gen 6 cluster with Compliance SmartLock?

A.

Standard directories containing data can be converted to a Compliance SmartLock directory

B.

SmartLock compliance directories can only be migrated from the recovery cluster

C.

Compliance directories have a system clock that is set once and cannot be changed after being set

D.

Failback of SmartLock compliance mode directories is not supported for Isilon Gen 6 clusters

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Question # 37

How does Isilon SnapshotIQ use storage for snapshots?

A.

Through Changed Block Tracking and only changed data blocks are saved

B.

Works on the file level and saves the entire file no matter what has changed

C.

Works with 4 KiB blocks and will always use that amount of storage, no matter what has changed

D.

Through Changed Block Tracking and always uses a 4 KiB block, even if the data changed is less than that amount

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Question # 38

A customer has two Isilon clusters. Cluster 1 has eight H500 nodes and cluster 2 has twelve H500 nodes. The

customer needs to be able to monitor real time performance data of the clusters as well as track file growth.

Which supported tool should be recommended?

A.

InsightIQ

B.

Data Insights

C.

Unisphere

D.

isi statistics

Full Access
Question # 39

Which Isilon product is recommended where low-latency and maximum performance is a critical factor?

A.

X-Series

B.

S-Series

C.

SmartQuotas

D.

NL-Series

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Question # 40

If Isilon SmartConnect is being configured in a customer environment, which records are required for a supported implementation?

A.

A SmartConnect Service IP host record and a zone delegation for the SmartConnect zone delegated to the SSIP

B.

An overloaded host record with each SmartConnect zone member's IP address and an SRV record to provide resolution services

C.

A SmartConnect Service IP host record and a corresponding PTR record for each SmartConnect zone

D.

A SOA record for the SmartConnect Service IP and a corresponding CNAME record for each SmartConnect zone

Full Access
Question # 41

Which impact policies are available on an Isilon cluster?

A.

High, Medium, Low, Default

B.

High, Medium, Low, Paused

C.

High, Medium, Low, Auto

D.

ASAP, High, Medium, Low

Full Access
Question # 42

-- 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 --

What steps would you recommend to the IT Director to allow for collaboration between the engineering company and the manufacturing company?

A.

Set up Access Zones on the Isilon cluster using Active Directory (AD) and NIS authentication.Create directories and apply user group permissions from AD and NIS for each collaboration team.

B.

Repoint the engineering users to the Active Directory controllerAdd the users to the appropriate Active Directory security group.

C.

Upload a collaboration user csv file into the cluster with usernames and passwords for the collaboration directory.

D.

Create a new pool for use by the collaboration users.Set up Access Zones on the Isilon cluster using AD and NIS authentication.

Full Access
Question # 43

When designing Isilon solutions, which issue should you pay special attention to?

A.

Meet customer expectations

B.

Create a workflow document

C.

Conduct stakeholder interviews

D.

Follow all SSD sizing rules

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Question # 44

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. The customer would like information about the possibility of setting protection levels on the target cluster.

What information can be provided to the customer about the protection level for the target directory?

A.

Configured separately on the target cluster and does not need to match the source

B.

Configured separately on the target cluster and must match the source

C.

Controlled by SyncIQ and cannot be altered

D.

Controlled by SyncIQ and can be altered by the CLI

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Question # 45

A customer wants to use their large Gen 6 Isilon cluster for ILM. All of their data is written to and read from a single file pool. They need to use multiple file pools, so slightly used data is stored on less expensive, large disks. Heavily used data is stored on a faster tier.

What would satisfy the customer’s needs?

A.

Configure SmartPools Advanced

B.

Add an A-series node with SmartPools license

C.

Enable FAST VP license on each node pair

D.

Install SmartPools license on the cluster

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Question # 46

An Isilon storage administrator is concerned about capacity after ingesting 200 TB of file data. They recently added more nodes to the cluster and now want to auto-balance it as soon as possible.

The cluster utilization percentages for an average 24-hour period are:

  • 45% during 00:00 - 08:59
  • 60% during 09:00 - 17:00
  • 85% during 17:01 - 23:59

The administrator wants to keep cluster utilization at a minimum. Which Impact Policy settings should be used to quickly complete the job without impacting the production workload?

A.

Medium, Low, Low

B.

Medium, Medium, Low

C.

High, Medium, Paused

D.

High, High, Low

Full Access
Question # 47

Which Isilon OneFS job, that runs manually, is responsible for examining the entire file system for inconsistencies?

A.

IntegrityScan

B.

MediaScan

C.

AutoBalance

D.

FlexProtect

Full Access
Question # 48

You are involved with a Proof of Concept where the performance is not what you expect. What can you use to collect process stack information and a listing of process waiting on I/O?

A.

netstat

B.

tcpdump

C.

isi statistics

D.

isi_get_itrace

Full Access
Question # 49

Which type of link aggregation is supported with Isilon nodes?

A.

Aggregation of up to eight similar ports in the same cluster

B.

Aggregation across Ethernet ports in a node

C.

Aggregation of 10 GbE and 40 GbE ports

D.

Aggregation across two or four nodes

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Question # 50

Which Isilon tool can be run from the cluster to display Isilon statistics such as CPU activity?

A.

iperf

B.

iostat

C.

InsightIQ

D.

MiTrend

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Question # 51

A customer is able to see some performance metrics in the Isilon OneFS dashboard or by using CLI. Other performance metrics will require InsightIQ.

What will require a licensed version of InsightIQ?

A.

Capacity Trending

B.

Cluster Throughput

C.

CPU Usage

D.

Active Client Connections

Full Access
Question # 52

A customer experiences a system failure on an Isilon storage node.However, the disk drives in the node are not affected.

What is the preferred method for restoring cluster integrity?

A.

Engage EMC support to perform a Disk Tango process to move drives, journal, and boot volumes to a replacement chassis

B.

Allow OneFS to proceed with its automatic SmartFail process to re-protect the failed node

C.

Migrate the disks from the failed node into spare drive bays on other nodes

D.

Initiate a manual SmartFail process on the node as it is not started automatically

Full Access
Question # 53

You are working with a healthcare company that is interested in replacing all the backend storage for their PACS system.

In general, how should the solution be presented to the customer?

A.

VNX for image cache; Isilon NL-Series nodes for image archive

B.

Isilon A-Series nodes for image cache; Isilon NL-Series nodes for image archive

C.

Isilon NL-Series nodes for image cache and image archive

D.

VNX for image cache and image archive

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Question # 54

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.

Eight NL400 (96 TB) nodes with 1.6 TB SSD

C.

Eight X400 (96 TB) nodes with 1.6 TB SSD

D.

Twenty-five X200 (30 TB) nodes with 800 GB SSD

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Question # 55

A customer has a requirement for a new solution to handle their growing storage requirements. The solution should have the ability to cover storage needs for the next three years. The environment consists of 100 TBs of file system data spread across five file systems. On average, the file systems grow 1 TB a month. In addition, they have a large VMware cluster supporting 200 VMs and a highly transactional database.

The customer wants the solution to offer good performance, scalability, manageability, and be cost-effective. The sales team is looking to you to recommend a solution.

Which recommendation will meet the customer’s requirements?

A.

VNX for DB and VMware workloads, and Isilon for file system data

B.

Isilon scale-out and cluster as required

C.

VNX Unified platform with FAST Cache

D.

VMAX with FAST VP and a NAS Gateway

Full Access
Question # 56

When creating a FilePool policy via the OneFS WebUI, what is the maximum allowed number of condition

blocks?

A.

1

B.

3

C.

8

D.

No limit

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Question # 57

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

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Question # 58

A customer has grown 2 PB in the last year. The cluster performs well most times of the day, but occasionally during the day, the customer notices a decrease in performance. You have been told that ‘tree-deletes’ are taking too long and can only be run on weekends.

What would you recommend to speed up the ‘tree-deletes’?

A.

Add an SSD node tier for metadata to account for at least 2% of RAW capacity

B.

Use an A100 node for added CPU performance to help with ‘tree-deletes.’

C.

Add 20% more nodes to the cluster to help with degraded performance.

D.

Add an SSD tier for metadata, ensuring all nodes have SSDs.

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Question # 59

What is the best case performance for Backup Accelerator when backing up to LTO-4 or LTO-5 drives?

A.

864 GB/hr

B.

1.7 TB/hr

C.

2.6 TB/hr

D.

3.4 TB/hr

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Question # 60

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

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Question # 61

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.

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Question # 62

A NetApp customer is considering Isilon. They use their filers for UNIX home directories, and would like to see a suggested configuration that would meet their needs.

What would you do to help size this cluster?

A.

Ask for an autosupport file and upload it to MiTrends to generate a workflow profile

B.

Ask them to install InsightIQ and collect data from the filer, then import to SQL for analysis

C.

Ask for the output from nfsstat and upload it to MiTrends to generate a workflow profile

D.

Use tcpdump and upload the output file to MiTrends to generate a protocol analysis

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Question # 63

A customer has a supported cluster with the maximum protection level. How many simultaneous node component failures can Isilon OneFS sustain while still allowing full access to the entire file system and dataset?

A.

1

B.

2

C.

3

D.

4

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Question # 64

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?

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Question # 65

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.

1

B.

2

C.

3

D.

None

Full Access
Question # 66

While configuring Isilon SmartConnect, a customer determined that their workload primarily consists of long-lived NFS and SMB connections. Which load-balancing policy will provide the most efficient client distribution?

A.

Random Selection

B.

CPU Utilization

C.

Network Throughput

D.

Connection Count

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Question # 67

While validating the value (VTV) with a large educational customer, they have decided they would like to add a Disaster Recovery (DR) site to their existing Isilon environment. The existing cluster contains six X-Series nodes. They plan to have all workflows replicated to the DR site and both clusters will have identical shares, exports, and user authentication. The customer would like to test DR failover every six months by running their production environment from the DR site.

What would you recommend for the DR solution?

A.

SyncIQ and identical cluster at the DR site

B.

SmartConnect and NL-Series nodes at the primary site

C.

SyncIQ and NL-Series nodes at the DR site

D.

Equal number of S-Series nodes at the primary site

Full Access
Question # 68

What is the smallest unit of data that Isilon OneFS will write to disk?

A.

4 KB

B.

8 KB

C.

16 KB

D.

128 KB

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Question # 69

Match each performance tool with its use case.

E20-555 question answer

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Question # 70

When installing nodes into a Dell EMC rack, which node type requires the use of a Titan-HD rack?

A.

H500

B.

F800

C.

A2000

D.

A200

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Question # 71

A customer plans to migrate data to a remote Isilon cluster. What is a consideration when configuring a cluster

with SyncIQ and hard SmartQuotas?

A.

SyncIQ ignores quota limits during replication but if a quota is over limit, quotas will still allow users to add

data to the directory.

B.

Quotas should be configured on both SyncIQ source and target directories prior to a migration.

C.

SyncIQ will replicate source quota configurations to the target.

D.

Quotas should be set only on source directories and never on target directories for migrations.

Full Access
Question # 72

Which block size is used by Isilon SyncIQ to transfer data?

A.

2 KB

B.

4 KB

C.

6 KB

D.

8 KB

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Question # 73

A four node F800 Isilon cluster running OneFS 8.2.1 has a dedicated subnet and IP pool for SMB data traffic.

SmartConnect Advanced license is applied. The SMB IP pool consists of LACP aggregated. 10GigE interfaces from all the nodes.

What is the maximum number of SmartConnect Service IPs recommended for the SMB subnet?

A.

1

B.

2

C.

4

D.

6

Full Access
Question # 74

If business objectives such as value and SLAs are considered, which Isilon license feature provides the ability to manage performance and the cost of data in a cluster?

A.

SmartPools

B.

SmartConnect

C.

SyncIQ

D.

SmartQuota

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Question # 75

What is appropriate for capturing packets for later analysis of I/O request sizes and randomness on Isilon clusters?

A.

Wireshark

B.

tcpdump

C.

iostat

D.

Mitrend

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Question # 76

A company currently has multiple fileservers to provide home directories for its employees. Each department has a separate fileserver. Most corporate users are on Windows clients and utilize Active Directory, except for the Engineering department, which uses Linux and NIS for authentication. The company is looking for a solution with minimal administrative overhead and a single namespace for the home directories.

What is the recommended solution that will meet this company's requirements?

A.

Configure a single Isilon cluster and utilize Access Zones for authentication to Active Directory and NIS.

B.

Configure two separate clusters, one for Windows clients and the other for Linux.

C.

Utilize SmartPools to create two different FilePools, and separate Windows users from Linux users.

D.

Configure a single cluster, and migrate Linux users to Windows.

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Question # 77

-- 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.

E20-555 question answer

Based on the described use of the cluster, which node combination is the appropriate choice for the customer’s requirements?

A.

4 x X400 nodes with 4 x NL 400 nodes

B.

4 x S200 nodes with 4 x NL 400 nodes

C.

4 x X200 nodes with 4 x NL 400 nodes

D.

4 x S200 nodes with 5 x NL 400 nodes

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Question # 78

An Isilon customer wants a job to periodically validates the checksum of every block in the file system. What should be recommended to the customer?

A.

IntegrityScan

B.

MediaScan

C.

Dynamic Sector Repair

D.

Isilon Data Integrity

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Question # 79

In an NFSv3 only environment, what is the recommended limit for active NFSv3 connections, per Isilon node?

A.

500

B.

1,000

C.

1,500

D.

2,500

Full Access
Question # 80

-- 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.

9.6 TB

B.

4.8 TB

C.

1.2 TB

D.

14.4 TB

Full Access
Question # 81

Which Isilon OneFS protection level allows you to withstand two drive failures but no more than one complete node failure?

A.

N+1

B.

N+2

C.

N+2:1

D.

N+3:1

Full Access
Question # 82

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.

Must match the source and is configured separately on the target cluster

C.

Cannot be altered and is controlled by SyncIQ

D.

Can be altered by the command line interface and is controlled by SyncIQ

Full Access
Question # 83

An Isilon customer experienced a node failure. The failure requires that the affected node be permanently removed from the cluster. What will occur in the cluster upon failure of the node?

A.

OneFS will assume it is a temporary failure and the data will not be protected at the appropriate levels.

B.

Cluster will detect the node failure and automatically begin the SmartFail process.

C.

FlexProtect will be activated and data will be protected at the appropriate levels.

D.

Nothing. When data protection levels are set appropriately, OneFS will always protect data without manual interaction.

Full Access
Question # 84

Which Isilon SmartLock version uses an NTP server to keep track of the set retention periods placed on a directory?

A.

Standard with WORM

B.

Standard No WORM

C.

Enterprise

D.

Compliance

Full Access
Question # 85

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.

Wireshark

B.

ClarityNow!

C.

IOZone

D.

lometer

Full Access
Question # 86

-- 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 --

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?

A.

InsightIQ

B.

isi_netlogger

C.

tcpdump

D.

netstat

Full Access
Question # 87

Which SmartConnect policies are used for workloads that have short lived connections such as HTTP and FTP?

A.

Connection count and round robin

B.

Round robin and CPU usage

C.

Throughput and CPU usage

D.

Throughput and connection count

Full Access
Question # 88

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?

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.

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.

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.

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.

Full Access
Question # 89

Where does Endurant Cache stage its write cache?

A.

SSD

B.

DISK

C.

NVRAM

D.

DRAM

Full Access
Question # 90

Refer to the Exhibit.

E20-555 question answer

What is represented by the information shown?

A.

Directory quota cannot exceed 2 TB for both /ifs/data/media and/ifs/data/media/photo.Directory quota cannot exceed 900 GB for /ifs/data/media/video.Directory quota can be any size up to 2 TB and each user can only store 75 GB for /ifs/data/media/temp.

B.

Directory quota cannot exceed 2 TB for /ifs/data/media and no quota limit on/ifs/data/media/photo.Directory quota cannot exceed 900 GB for /ifs/data/media/video.Directory quota can be any size up to 2 TB and each user can only store 75 GB for /ifs/data/media/temp.

C.

Directory quota cannot exceed 2 TB for both /ifs/data/media and /ifs/data/media/photo.Directory quota cannot exceed 900 GB for /ifs/data/media/video.Directory quota can be any size up to 2 TB for /ifs/data/media/temp.

D.

Directory quota cannot exceed 2 TB for both /ifs/data/media and /ifs/data/media/photo.Directory quota cannot exceed 900 GB for /ifs/data/media/video.Directory quota can be any size up to 900 GB and each user can only store 75 GB for /ifs/data/media/temp.

Full Access
Question # 91

Using Isilon SnapshotIQ, how many snapshots can be created at the directory level?

A.

8

B.

96

C.

256

D.

1024

Full Access
Question # 92

When configuring Isilon SmartPools policies, which values are allowed for file pool policy storage destinations?

A.

Disk pools and node pools

B.

Disk pools

C.

SSD pools and tiers

D.

Node pools, tiers, and anywhere

Full Access
Question # 93

Refer to the exhibit.

E20-555 question answer

A large hospital chain has approached you to redesign their storage infrastructure. The head of IT believes their requirement is for 60 TB of RAW capacity. The following are the notes from meetings with the department heads.

Which is the minimum cluster configuration that meets the customer's requirements?

A.

3 NL-Series Nodes using SynqIQ to 3 NL-Series Nodes

B.

3 S-Series Nodes using SmartPools and 3 NL-Series Nodes for Archive

C.

5 S-Series Nodes

D.

4 X-Series Nodes using SynqIQ to 4 NL-Series Nodes

Full Access
Question # 94

Your customer manages a print media environment, consisting of three Isilon clusters, which are out of support. The customer would like to have access to new software releases and feature sets. You have been asked to perform a full discovery of the customer’s environment.

The customer's current Isilon clusters are as follows:

“Cust” (12 x 12000X) serves as upload media storage for different tenants.

“Working” (8 x 12000X + 6 x X200) serves as a working zone for extraction to RAW and printing media from it.

“Archive” (16 x 72NL + Accelerator nodes) is used to store printed content for six months.

The customer operates in a Windows environment using SMB 2.0, two DNS servers per AD forest, three forest domains which are servicing three different environments. All servers are operating on a 1Gb network, three VLANs segregating the DEV/QA/PROD environments. Currently, there is no monitoring in place for performance measurement or optimization.

The requirements for this solution include:

  • Better ROI and TCO
  • Maintain same performance with possible improvements
  • Renew HW/SW and get inclusive support
  • Limit migrations
  • Reduce space, power, cooling consumption
  • Get new feature sets
  • If migration required, use Parallel copy (multiple nodes, multiple threads, multiple connections)
  • Segregate tenant shares from other tenants
  • Expand up to 1PB of total storage

What would you recommend be done to consolidate the three clusters into one?

A.

• Expand the largest and most I/O intensive cluster using SmartFail• Consolidate the remaining two clusters using Multithreaded version of RoboCopy• Modify A-Record and propagate to all DNS servers to point to the new cluster

B.

• Leave the clusters as is• Upgrade drive sizes to meet the customer requirements

C.

• Expand the largest and most I/O intensive cluster using SmartFail• Consolidate the remaining two clusters using SyncIQ

D.

• Build a new cluster for consolidation• Use SnapshotIQ to migrate the existing data onto the new consolidated cluster• Spoof DNS to point to the new cluster

Full Access
Question # 95

An Isilon customer has an environment supporting a wide range of different workloads. They want to assign clients to performance tiers based on the resources needed.

What can the customer use to meet this requirement?

A.

SmartConnect Zones

B.

Load Balancing

C.

Client Connection Zone

D.

SmartPools Advanced

Full Access
Question # 96

Three jobs are running, all with a priority of 5. A new job with a priority of 6 needs to be run. What happens?

A.

The job engine pauses a priority 5 job and runs the new job until completion, then restarts the paused job from the point at which it was interrupted.

B.

The job engine runs the new job in parallel with the other jobs.

C.

The job engine pauses a priority 5 job and runs the new job until completion, then restarts the paused job from the beginning.

D.

The job engine queues the new job until one of the currently running jobs completes.

Full Access
Question # 97

Your customer has an Isilon Gen 6 cluster with eight H400 nodes. During an unexpected power outage some

of the nodes go offline simultaneously.

How many nodes need to remain up and communicating over the backend network to maintain a quorum in

the cluster and still enable write access to the OneFS file system?

A.

2

B.

4

C.

5

D.

6

Full Access
Question # 98

In a multi-tenant environment, which OneFS feature can be used to isolate and secure data from each tenant?

A.

Groupnets

B.

ZRBAC

C.

Access Zones

D.

RBAC

Full Access
Question # 99

You are sizing an Isilon Cluster for a new customer. Analyzing their workflow, you determine that they have a small block random read workload.

What is the most important factor to consider when sizing this solution?

A.

Headroom

B.

IOPS

C.

Latency

D.

Bandwidth

Full Access
Question # 100

An administrator recently installed InsightIQ to gather cluster statistics, and wants to look at file system usage (such as the number of files in a directory). However, currently no file system statistics are displayed in InsightIQ after 24 hours. Use of the cluster is moderate, and occurs 24 hours per day.

What job for InsightIQ should the administrator modify to successfully report these statistics?

A.

Change priority to 1 and job impact to High for Collect

B.

Change priority to 4 and job impact to Medium for FSAnalyze

C.

Change priority to 7 and job impact to Medium for SmartPools

D.

Change priority to 3 and job impact to Low for MultiScan

Full Access
Question # 101

In what order does an Isilon Gen 6 cluster respond to a client file read request?

E20-555 question answer

Full Access
Question # 102

A customer is using file pool policies to archive infrequently accessed files to Amazon S3 via CloudPools. How

could the customer easily find out how many stub files are stored on the cluster?

A.

OneFS WebUI can be used to show how many stubs are stored in each node pool

B.

InsightIQ can report the number of stub files stored on the cluster

C.

The isi statistics CLI command can be used to show how many stubs are stored in each node pool

D.

The number of stub files stored on a cluster is not easily available

Full Access
Question # 103

Your customer uses an existing Isilon cluster consisting of five NL-Series nodes to source broadcast media files for playback and streaming.The customer reports that the playback pauses and stutters regularly. It has been confirmed that there are no network or playback system issues.

Which of the choices listed is the appropriate choice to address the playback issues?

A.

Add three or more S-Series Nodes

B.

Upgrade OneFS to the latest version

C.

Enable SmartConnect Advanced

D.

Enable Level 2 Caching

Full Access