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Isilon Solutions and Design Specialist for Technology Architects

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
    :Mar 07, 2025

EMC EMC Certifications E20-555 Questions & Answers

  • Question 291:

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

    A. 3

    B. 5

    C. 6

    D. 9

  • Question 292:

    Where does SmartCache stage its write cache?

    A. SSD

    B. DISK

    C. NVRAM

    D. DRAM

  • Question 293:

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

    A. Write

    B. Volume

    C. Read

    D. Protection

  • Question 294:

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

    A. 1/2

    B. 1/4

    C. 1/5

    D. 1/6

  • Question 295:

    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?

    A. 4

    B. 5

    C. 6

    D. 7

  • Question 296:

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

    A. 2x

    B. 5x

    C. 10x

    D. 25x

  • Question 297:

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

    A. L2

    B. CPU

    C. L1

    D. RAID

  • Question 298:

    A customer is looking for a new storage solution to handle their growing storage requirements. The system should be able 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 is looking for a solution that would provide 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. Isilon for file system data, and a VNX for DB and VMware workloads

    B. Isilon cluster and scale-out as required

    C. VNX Unified platform with FAST Cache

    D. VMAX with FAST VP and a NAS Gateway

  • Question 299:

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

    A. Endurant Cache sends an acknowledgement to the client immediately after mirroring writes in NVRAM

    B. Endurant Cache waits for acknowledgement from all nodes before copying to L2 cache

    C. SmartCache immediately commits the write to NVRAM on the local node and one peer node

    D. SmartCache uses sub-file, granular locking whereas Endurant Cache locks the entire file

  • Question 300:

    Where are file system operations initiated on an Isilon node?

    A. L1

    B. NVRAM

    C. L2

    D. Disk

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