Exam Details

  • Exam Code
    :E20-880
  • Exam Name
    :VNX Solutions Expert Exam for Technology Architects
  • Certification
    :Technology Architect
  • Vendor
    :EMC
  • Total Questions
    :240 Q&As
  • Last Updated
    :Apr 27, 2025

EMC Technology Architect E20-880 Questions & Answers

  • Question 11:

    A customer needs to move data from a CLARiiON to a new VNX storage system. Attempts to configure a SAN Copy session with Unisphere fail. The customer uses Navisphere Secure CLI to configure the session. The session can be successfully started from Navisphere Secure CLI but fails just prior to completion each time it is started. What is the cause of the failure?

    A. Source and target LUN IDs do not match.

    B. Source is a standard LUN and the target array has only meta LUNs available.

    C. Source LUN is larger than the target LUN.

    D. Source LUN is RAID 1/0 and the target LUN is RAID 5.

  • Question 12:

    A customer implemented full SAN Copy with default settings in order to copy 60 DMX array volumes to a VNX storage system. After several hours, they determine that the process is taking much longer than expected. Which storage system configuration change will improve performance?

    A. Disable the CMI channel on the destination storage system

    B. Disable write cache for the Reserved LUN Pool on the source storage system

    C. Add faster LUNs to the Reserved LUN Pool

    D. Increase the throttle value

  • Question 13:

    A customer is supporting 800 Exchange users on a VNX5700. The users are divided among four Exchange storage groups using a total of eight LUNs each for data and logs and two LUNs for a cluster quorum disk and MSDTC. The company purchased a VNX5300 for its remote site. The company is using MirrorView/A with consistency groups to ensure consistent point-in-time recovery. The Exchange LUNs have been added to the consistency group, but the administrator is having trouble adding the quorum and DTC LUNs.

    What should the administrator do?

    A. Create a second consistency group for the quorum and DTC LUNs

    B. Evenly distribute all LUNs across both SPs before adding them to the consistency group

    C. Create ten consistency groups (one for each LUN) and ensure that the update frequency is the same for all groups

    D. Fracture all mirrors before adding them to the consistency group

  • Question 14:

    A customer's database resides on a RAID 5 Pool with SAS drives. Which best practice should be followed to optimize Reserved LUN Pool disk performance?

    A. Use equal size thin LUNs from the same Pool as the database

    B. Use a mix of both SAS and NL-SAS disks from the same Pool as the database

    C. Use only SAS disks on dedicated RAID Groups

    D. Use only NL-SAS II drives on dedicated RAID Groups

  • Question 15:

    A customer is running a data warehouse server with dual HBAs connected to a SAN. A performance analysis of the server shows high utilization. This server needs to be backed up to a SAN-attached backup device. The customer is concerned about production performance while backing up the data. Which solution should be proposed?

    A. Use clones as the backup source

    B. Perform disk-based backup

    C. Use direct-attached tape-based backup

    D. Back up the data over a LAN

  • Question 16:

    What factors can be used to determine the number of IOPs per desktop that a VNX will need to satisfy during the boot of a virtual desktop?

    A. Data required to boot, boot time, I/O size

    B. Cache warming duration, boot time, I/O size

    C. Desktop RAM requirements, Data required to boot, I/O size

    D. RAM requirements, OS size on disk, boot time

  • Question 17:

    A company needs to create clone LUNs on a VNX storage system. These LUNs will be used by Replication Manager to back up a Microsoft Exchange server database and log LUNs. Where must the clone LUNS be created to have the least impact on the Exchange servers?

    A. In a RAID Group shared with another application

    B. In the same RAID Group as the Exchange databases

    C. In the same RAID Group as the Exchange logs

    D. In their own RAID Group

  • Question 18:

    Click the calculator icon in the upper left-hand corner. A customer is building out a VDI environment of 1000 light users and 50 heavy users. They plan to use Boot from SAN for all VDI users. They are preparing a complete HA environment. If boot requires 6300 I/Os, with 5700 write I/Os and 20 seconds to complete. How many I/Os will occur during an HA failover in this environment?

    A. 315,000

    B. 10,500

    C. 105,000

    D. 52,500

  • Question 19:

    A customer built a VDI on a VNX array. The customer currently has only NL-SAS drives. The customer wants to simulate I/O characteristics of users accessing the storage from the virtual desktops. What tool should be recommended?

    A. Horizon View Planner

    B. Unisphere Analyzer

    C. Test Harness Planner

    D. Virtual Storage Integrator

  • Question 20:

    A Customer is planning to build a VMware DTaaS environment on a VNX array. The customer is deciding what type of VM replicas would be acceptable in their environment. It needs to have a small footprint and contain frequently accessed data on SSDs drives. What should be recommended?

    A. Link Clones

    B. Snap clones

    C. Flash clones

    D. Full clones

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