E20-555 Exam Details

  • Exam Code
    :E20-555
  • Exam Name
    :Isilon Solutions and Design Specialist for Technology Architects
  • Certification
    :EMC Certifications
  • Vendor
    :EMC
  • Total Questions
    :344 Q&As
  • Last Updated
    :Jul 08, 2026

EMC E20-555 Online Questions & Answers

  • Question 331:

    A customer environment is used for analytics on very large datasets. They are interested in using Isilon storage and Hadoop but are concerned about the costs. How does Isilon change the scalability of a Hadoop environment?

    A. JobTracker and TaskTracker are offloaded to the Isilon cluster
    B. DataNode and TaskTracker are offloaded to the Isilon cluster
    C. NameNode and DataNode are offloaded to the Isilon cluster
    D. NameNode and JobTracker are offloaded to the Isilon cluster

  • Question 332:

    What is the minimum size and the maximum size, respectively, of a single pre-Gen 6 node pool?

    A. 3 and 144
    B. 3 and 288
    C. 4 and 144
    D. 4 and 288

  • Question 333:

    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?

    A. HDFS, SmartQuotas, SnapshotIQ, InsightIQ
    B. SmartPools, SnapshotIQ, SyncIQ, SmartLock
    C. InsightIQ, SmartPools, SyncIQ, SmartConnect Advanced
    D. SyncIQ, InsightIQ, SmartPools, Platform API

  • Question 334:

    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

  • Question 335:

    What is the maximum volume or aggregate size that can be created with an Isilon Scale-Out NAS system?

    A. 16 TB
    B. 100 TB
    C. 2.3 PB
    D. 20 PB

  • Question 336:

    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?

  • Question 337:

    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?

    A. tcpdump
    B. lometer
    C. File System Analytics
    D. iostat

  • Question 338:

    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

  • Question 339:

    What determines how a user is directed to the correct secure multi-tenancy access zones?

    A. External protocols
    B. Isassd daemon
    C. External providers
    D. Incoming IP

  • Question 340:

    A customer has two data centers (Site A and Site B). There is an Isilon cluster in each data center and they use SyncIQ to replicate data between the two data centers.

    You have been reviewing their disaster recovery plan and found the following:

    The policies specify that SyncIQ runs a replication job every 2 hours and that the job finishes within 1 hour.

    Three additional hours will be needed to get servers and the network redirected to work from Site

    What is the Recovery Point Objective in this plan?

    A. 2 Hours
    B. 3 Hours
    C. 4 Hours
    D. 5 hours

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