E20-555 EMC Isilon Solutions and Design Specialist Exam for Technology Architects Free Practice Exam Questions (2025 Updated)
Prepare effectively for your EMC E20-555 Isilon Solutions and Design Specialist Exam for Technology Architects certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.
A new customer is interested in an Isilon Gen 6 solution to replace their sprawling and outdated Linux
environment. Which client tool should you use to establish an estimate of the workload and pattern as an input to the sizing process?
An Isilon customer is reporting less than expected performance from the cluster and poor space utilization. The customer is using three X400 nodes with N+2:1 protection policy to host webserver log data. Upon further analysis, it is discovered that the webservers write log files 64 KiB in size. The log files are then accessed by an analytics application for reporting.
What should be done to increase write performance of the cluster?
In a multi-tenant environment, which OneFS feature can be used to isolate and secure data from each tenant?
Which type of infrastructure does the Isilon scalable appliance connect to on the front-end?
In an Isilon cluster for N+2 protection, what is the minimum number of nodes?
Which Isilon product is recommended where low-latency and maximum performance is a critical factor?
Refer to the exhibit.
A large hospital chain has approached you to redesign their storage infrastructure. The head of IT believes their requirement is for 100 TB of RAW capacity. They want to consolidate their PACS, file shares and home directories onto one cluster and require very fast enumeration of the directories. The following are the notes from meetings with the department heads.
Which is the best cluster configuration that meets the customer's requirements?
Which protocol is integrated with Isilon OneFS to provide on-access file functionality?
When designing an Isilon cluster for content creation workflows in the Media and Entertainment (M&E) vertical,
what type of workflows must you consider?
During a write process in OneFS 8.0, from which cache are blocks copied to disk?
-- 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?
-- 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 --
Currently, the workflows are being limited by the network access to the Isilon cluster.
What would result in the fastest possible network throughput?
A potential customer is considering replacing a four year old, Linux-based NFS server with 40TB of usable capacity. The existing system supports home directories, an internal website, and a content repository for the customer's content management system. The customer is concerned about performance of any new solution because they expect to double workload in the content management system.
What tools can be used to collect performance data needed to size the new solution?
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?
Which type of deduplication is used to maximize the storage efficiently on an Isilon cluster?
What is the overhead impact on the physical capacity when configuring data protection at +2:1 on a 6-node Isilon cluster?
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?
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?
An architect is designing a solution for a new customer. The customer is going to use the cluster to store a
large number of files that will be accessed by many users.
What IO optimization should be used and what kind of prefetching will take place?
An Isilon customer created a scheduled SyncIQ policy to replicate data from an Enterprise-mode SmartLock directory. The source cluster is now unusable and the target cluster does not automatically allow writes to the data in the replicated SmartLock directory.
What is the reason why the target cluster did not automatically allow writes of the data?
