E20-555 EMC Isilon Solutions and Design Specialist Exam for Technology Architects Free Practice Exam Questions (2025 Updated)

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?

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

Three jobs of different exclusion sets with a priority level of 5 are concurrently running on a cluster. A new job

with a priority of 4 needs to be run.

What does the Job Engine do?

Which type of data is stored in Endurant Cache of an Isilon node?

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?

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 6 × F800 node Isilon cluster has one subnet with two IP pools with LACP aggregated 10GigE interfaces from

all the nodes in the ‘Data-Zone’ Access Zone. The ‘NFS-Pool’ with dynamic IP Allocation schema and ‘SMBPool’

with static IP Allocation schema are being used.

All the Linux clients are accessing Isilon exports using NFSv3 via the ‘NFS_Pool’. All the Windows clients are

accessing Isilon shares using SMBv3 via the ‘SMB_Pool’.

While deploying Isilon, the customer reserves the whole network subnet for Isilon. The customer is facing

performance issues with a new workload that is accessing the Isilon via Kerberized NFSv4.

What is recommended when creating a new IP pool for NFSv4 clients?

An Isilon customer wants the ability to provide low latency I/O for their files due to a workflowinvolving small, random reads and writes. Which SSD strategy is most effective for this use case?

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?

In OneFS, what is the largest number of disks in a subpool?

-- 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 Isilon license options are required to meet the customer's needs?

A customer plans to consolidate 200 TB of digital images and video content. Performance is important for recently created files. However, the customer wants any content that has not been accessed within 30 days to be stored in the cluster at a much lower cost because performance is no longer critical.Which Isilon configuration should be recommended?

Which type of link aggregation is supported with Isilon nodes?

Your customer is moving from a Restaurant/Bar business model to a Restaurant/Casino business model. You are helping architect the upgrade of a current 4-node X200 48 TB Isilon cluster, with 50% utilized for their video surveillance operations.

They want to upgrade from 15 FPS (NTSC) in H.264 codec, with a 15 days retention policy to 30 FPS (NTSC) in H.264 codec, with a 30 days retention policy.

How many nodes of the same type will you need to add in order to meet the required changes and not exceed 70% raw capacity?

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 customer has an Isilon cluster that they want to simplify a Hadoop workflow. The workflow analyzes large amounts of log data written to storage using FTP and results are viewed by Microsoft Windows clients?

How can this be achieved?

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?

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

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?