E20-555 Exam Questions

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....

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

Which type of infrastructure does the Isilon scalable appliance connect to on the front-end?

A customer needs to consolidate 300 TB of home directory servers and shared file systems used by development and test groups. A key requirement is to prevent the systems from consu...

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 stora...

How many layers are in the Isilon clustering architecture?

Which node type provides CPU, memory, and Fibre Channel connectivity?

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

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...

A customer wants an N+3 protection level on their cluster. What is the minimum number of nodes they need to achieve that level of protection?

What does Isilon OneFS use to re-write data when a disk read fails?

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

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

Which Isilon OneFS administration methods are enforced by RBAC?

Independent of protocol, what does Isilon OneFS use to translate identities?

Which protocol is integrated with Isilon OneFS to provide on-access file functionality?

Which impact policies are available on an Isilon cluster?

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 so...

Which Isilon job has a default priority of '1'?

A customer is planning an Isilon deployment for use with their Hadoop environment. What is one advantage of using Isilon as the HDFS layer?

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 b...

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 initiati...

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 clus...

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 clus...

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 cus...

You meet with the IT Director of a large single site campus. The IT department has recently taken over Physical Security from the facilities department and plans a complete overhau...

A four-node Isilon cluster is being used in a Hadoop workflow with a parity protection of N+2:1. The HDFS protocol has been enabled and is being used to access data. How many addit...

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...

A media and entertainment company has asked for help in creating a new Video On Demand (VOD) storage system. The storage would be delivered to 5000 subscribers simultaneously. They...

Your customer has observed a degradation in response time while browsing for media files within the Production Media folder of the Isilon cluster. That directory now contains over...

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...

A hospital is considering using Isilon to store their archived medical images and Genomic Sequencing data. They currently have 56 TB of PACS images and 24 TB of genomic data, and e...

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 requ...

Which protocols are supported by Isilon OneFS for file access?

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

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...

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

At which level can retention periods be applied with Isilon SmartLock?

A customer is trying to get Isilon SyncIQ to run on the two clusters they just purchased. However, they are experiencing some problems. They have asked you to explain how the SyncI...

Where are file system operations initiated on an Isilon node?

For concurrent I/O, how do SmartCache and Endurant Cache differ?

Where is caching for disk blocks staged on an Isilon node?

What is the relative latency of a cache hit to L1 cache compared to a hit to L2 cache in an Isilon cluster?

Where does SmartCache stage its write cache?

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

What is the overhead impact on the physical capacity when configuring data protection at +2:1 on a 6-node Isilon cluster?

A customer has 10 nodes in a cluster using N+2 protection. What is the minimum number of nodes required to be online and in communication with one another to satisfy quorum?

In an Isilon cluster for N+2 protection, what is the minimum number of nodes?

A customer has a 7-node Isilon cluster configured with N+2:1 protection. How many nodes can be offline with the data accessible and fully writeable?