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 81:

    You are designing a new Isilon cluster that requires backup to tape for all files in the Legal and Accounting shared folders. The customer has sized their IP network to support the application workload, but no additional bandwidth is available. What should be recommended for the backup solution?

    A. Use an Avamar NDMP accelerator and dedicated 10Gb/s network interfaces
    B. Use Backup Accelerator nodes for 2-way NDMP
    C. Use Backup Accelerator nodes for 3-way NDMP
    D. Use SmartConnect Advanced and 10Gb/s network interfaces with LACP

  • Question 82:

    What is the smallest unit of data that Isilon OneFS will write to disk?

    A. 4 KB
    B. 8 KB
    C. 16 KB
    D. 128 KB

  • Question 83:

    When configuring Isilon SmartPools policies, which values are allowed for file pool policy storage destinations?

    A. Disk pools and node pools
    B. Disk pools
    C. SSD pools and tiers
    D. Node pools, tiers, and anywhere

  • Question 84:

    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. The environment consists of 100 TBs of file system data

    spread across five file systems. On average, the file systems grow 1 TB a month. In addition, they have a large VMware cluster supporting 200 VMs and a highly transactional database.

    The customer wants the solution to offer good performance, scalability, manageability, and be cost-effective. The sales team is looking to you to recommend a solution.

    Which recommendation will meet the customer's requirements?

    A. VNX for DB and VMware workloads, and Isilon for file system data
    B. Isilon scale-out and cluster as required
    C. VNX Unified platform with FAST Cache
    D. VMAX with FAST VP and a NAS Gateway

  • Question 85:

    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 expect to double their capacity requirements this year. They will replicate to a DR cluster, and plan to use N+2 protection. The production workload needs to be run at either site.

    Which minimum cluster configuration, at each site, including software, would meet this customer's environment?

    A. Five X400 (2 TB drives) nodes with SyncIQ.
    B. Four NL400 (3 TB drives) nodes with SyncIQ.
    C. Seven X200 (3 TB drives) nodes with SyncIQ and SnapshotIQ
    D. Five X400 (2 TB drives) nodes with SnapshotIQ.

  • Question 86:

    A customer's cluster contains three X200 (24 GB RAM, 3 TB drives) nodes, and three X400 (48 GB RAM, 1 TB drives) nodes. All nodes are configured in a single pool. All data is protected at N+2. After upgrading OneFS to 7.0, the Isilon Web interface indicates that files are not fully protected.

    What should be done to correct this situation?

    A. Recreate the original pool using the Isilon Web interface
    B. Add 24 GB RAM to each of the X200 nodes
    C. Recreate the original pool using the command line interface
    D. Add two X200 nodes and two X400 nodes

  • Question 87:

    Which Isilon tool can be run from the cluster to display Isilon statistics such as CPU activity?

    A. iperf
    B. iostat
    C. InsightIQ
    D. MiTrend

  • Question 88:

    In an NFSv3 only environment, what is the recommended limit for active NFSv3 connections, per Isilon node?

    A. 500
    B. 1,000
    C. 1,500
    D. 2,500

  • Question 89:

    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 would like to store 5000 hours of full length, High Definition (HD) movies.

    What would be the best price-to-performance nodes for this solution?

    A. X400 with no SSD and 96GB RAM
    B. X200 with no SSD and 48GB RAM
    C. Mixed X400 48GB RAM and NL400 24GB
    D. X400 with 1.6TB SSD and 24GB RAM

  • Question 90:

    An Isilon customer is experiencing less than expected performance and poor space utilization with their cluster. They are using the X400 nodes with an N+2d:1n protection policy to host web server log data. Upon further analysis, the customer discovers that the web servers write log files 64KiB in size. The log files are then accessed by an analytics application for reporting purposes. What should be done to increase the write performance of the cluster?

    A. Change the protection scheme to a mirroring policy
    B. Add S-Series storage nodes to the cluster
    C. Add A-Series Performance Accelerator nodes to the cluster
    D. Change the SSD strategy on the cluster

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