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

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

What is a Shadow Store used for in Isilon OneFS?

Where are file system operations initiated on an Isilon node?

What is a benefit of using SSDs for Metadata Read/Write Acceleration?

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

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 customer configures a file pool policy to write data to tier 2 on the Isilon cluster. This is in addition to the 30 policies already created. Later in the week they check the file placement and see that it has not been written to the correct tire. What could be the problem?

Which Isilon job periodically checks disk sectors to ensure they can be read?

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

Which licenses need to be defined for the solution to perform optimally?

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?