E20-390 Exam Details

  • Exam Code
    :E20-390
  • Exam Name
    :VNX Solutions Specialist Exam for Implementation Engineers
  • Certification
    :EMC Certifications
  • Vendor
    :EMC
  • Total Questions
    :412 Q&As
  • Last Updated
    :May 25, 2026

EMC E20-390 Online Questions & Answers

  • Question 291:

    Which CLI command is used to disable Access Logix?

    A. naviseccli -h accesslogix -off
    B. naviseccli -h sc_off
    C. naviseccli-h storagegroup -disable
    D. naviseccli -h accesslogix disable

  • Question 292:

    Which component of Replication Manager controls replication jobs and stores data about each replica?

    A. Server
    B. Database
    C. Agent
    D. Appliance

  • Question 293:

    Refer to the exhibit.

    Which I/O module combination could be used in Slot 0 within a VNX Gateway X-Blade?

    A. a. and c
    B. a. and b
    C. a, b and d
    D. a, c and e

  • Question 294:

    The thin pool on the sec array has experienced an out-of-space condition so a MirrorView/A update has failed. What is the state of this particular MirrorView/A mirror?

    A. Administratively fractured
    B. System fractured
    C. Inactive
    D. Out-of-sync

  • Question 295:

    A site administrator has purchased the FAST Suite, and will be introducing five EFDs into the VNX array. They are currently using three RAID groups and one large heterogeneous storage pool. How should the five EFDs be used to obtain optimal performance and availability for the entire array?

    A. Use four EFD drives for the existing FAST VP pool; use one as hot spare
    B. Use all five EFD drives for FAST Cache
    C. Use all five EFD drives in the existing FAST VP pool
    D. Use four EFD drives for FAST Cache; use one as hot spare

  • Question 296:

    What does the acronym "CHAP" refer to?

    A. Challenge Handshake Authentication Protocol
    B. Challenge Handshake Authorization Protocol
    C. CLARiiON Handshake Authentication
    D. Consistent Host Application Protocol

  • Question 297:

    What specific VNX model uses a Storage Processor Enclosure?

    A. VNX 5700
    B. VNX 5100
    C. VNXe 3300
    D. VNX 5300

  • Question 298:

    When configuring a VNX Gateway system, which is a compatible backend storage configuration method?

    A. VNX Gateway system connected to a VNX Block Only system via FCoE
    B. VNX Gateway system connected to a VNX Block Only system via FCiP
    C. VNX Gateway system connected to a Symmetrix system via iSCSI
    D. VNX Gateway system connected to a Symmetrix system via iFCP

  • Question 299:

    Which technology is used by VNX SnapSure?

    A. Copy on First Write
    B. MetaLUN
    C. Redirect on Write
    D. Journal

  • Question 300:

    Which statement is true about expanding a striped metaLUN?

    A. There is no performance impact on the base LUN while restriping.
    B. Expanded capacity is available while the LUN restripes.
    C. Restriping requires read and write of the entire LUN.
    D. Restripe time is dependent on the element size multiplier.

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