EMC EMC Certifications E20-393 Questions & Answers

• Question 271:

  Which Dell EMC UnityXT system user interface allows system administrators to create scripts for automating routine tasks?

  A. Unisphere Central

  B. UEMCLI

  C. IPMI

  D. Unisphere GUI

  Correct Answer: B

  Reference: https://www.dellemc.com/en-us/collaterals/unauth/white-papers/products/storage/h15085-dell-emc-unity-unisphere-overview.pdf

• Question 272:

  A system administrator has configured a system using the Initial Configuration wizard. After completing the wizard, the administrator discovers that an incorrect IP address has been assigned to the Unity system. How can the IP address be changed?

  A. The IP address cannot be changed once it has been configured

  B. Through the Service interface using the ifconfig command

  C. In the Unisphere Settings menu

  D. The IP address can only be changed using the UEMCLI

  Correct Answer: D

  The svc_initial_config UEMCLI command sets up initial system configuration. It configures a management IP address when the Connection Utility (CU) is not available on the network. If an address is set, this command can also change the management IPv4 and IPv6 configuration mode. It attempts to configure the system with the given friendly name and/or network parameters.

  Note: The Unisphere CLI (UEMCLI) is a tool that provides us with the CLI access to perform the same actions as one would on the Unisphere web interface. References: https://www.emc.com/collateral/TechnicalDocument/docu69328.pdf (page 60)

• Question 273:

  On which systems is Quality of Service available?

  A. Physical Unity systems only

  B. UnityVSA systems only

  C. Physical Unity and UnityVSA systems

  D. All Flash Unity systems only

  Correct Answer: C

  UnitVSA features Host I/O limits, also known as Quality of service. The EMC [Physical] Unity array comes with a pack of new hardware and software features focusing on the true unification: Support for setting up Host I/O limits, also known as QOS, providing a more predictable performance for the workloads by putting limits on I/O throughputs and bandwidth DPE reduced from a 7U footprint to an innovative 2U footprint 12 GB SAS back-end for the Unity DAEs; EMC VNX/VNXe supported only 6 GB SAS backend Completely redesigned user interface based on HTML5

  References: http://www.presidio.com/blog/technical-summary-emc-unification-unity

• Question 274:

  When deploying virtual disks for a UnityVSA system, what is an EMC recommended Disk Provision Policy?

  A. Thick Provision Eager Zeroed

  B. Thin Provision

  C. Thick Provision

  D. Thick Provision Lazy Zeroed

  Correct Answer: A

  EMC recommends the following settings for all virtual disks:

  Disk Provisioning: Thick Provision Eager Zeroed.

  Location: A different datastore than the VM.

• Question 275:

  A storage administrator is required to test a new version of an application loaded on a secondary host. The administrator must use existing data contained on a LUN provisioned from Unity to a primary host.

  Which solution will meet the requirement and provide space efficiency?

  A. Create a snapshot of the LUN Configure LUN access for the secondary host Attach the snapshot to the secondary host

  B. Create a snapshot of the LUN Configure snapshot access to the LUN for the secondary host Attach the snapshot to the secondary host

  C. Create a Synchronous Replication session for the LUN Configure access to the replica LUN for the secondary host Attach the secondary host

  D. Create an Asynchronous Replication on session for the LUN Configure access to the replica LUN for the secondary host Attach the secondary host

  Correct Answer: B

  Attaching a snapshot is only applicable for block snapshots, and makes the snapshot available for host IO. A host must have Snapshot access or LUN and Snapshot access configured in order to access the snapshot. When a snapshot is attached, Unisphere provides the option to create a copy of the snapshot in case the administrator wants to preserve the current snapshot view for future use.

• Question 276:

  When configuring asynchronous remote replication, how many internal Unity Snapshots are configured and utilized on the source system by a single replication session?

  A. 1

  B. 2

  C. 3

  D. 4

  Correct Answer: B

  Internal Snapshot (Replication Snapshot) are Unity Snapshots created by the system which are part of an asynchronous replication session. These Snapshots can be viewed in Unisphere, but user operations are not permitted. Each asynchronous replication session uses two internal snapshots taken on the source and destination storage resources.

• Question 277:

  A storage administrator is implementing FAST Cache on a Unity 500 storage array and can select from a mix of SSD drives. Which drive types can be configured to meet the administrator's requirements?

  A. 200 GB and 400 GB

  B. 400GB and 1.6 TB

  C. 1.6 TB and 3.2 TB

  D. 3.2 TB and 800 GB

  Correct Answer: A

  Unity 500 FAST Cache is only supported by 200 GB and 400 GB SSD hard drives.

  Reference: http://www.emc.com/collateral/data-sheet/h14958-unity-hybrid-family-ss.pdf (page 5)

• Question 278:

  Which software bundles are provided with the Unity Starter software package?

  A. FAST Cache and Fast VP

  B. Thin Provisioning and Quality of Service

  C. Controller-Based Encryption and RecoverPoint Basic

  D. FAST Cache and Local Point-in-Time Copies

  Correct Answer: A

  The UnityVSA offers a dynamic deployment model that allows you to start for free and grow as business needs evolve.

  UnityVSA include:

  FAST Cache leverages the performance of Flash media to improve workloads that are interfacing with spinning disk media.

  Fully Automated Storage Tiering for Virtual Pools (FAST VP) ensures your data is distributed effectively across the various media types in a multi-tier pool.

  Reference: https://www.emc.com/collateral/white-papers/h15084-emc-unity-introduction-to-the-unity-platform.pdf (page 20)

• Question 279:

  What is the minimum VMware Hypervisor version a server must be running in order to support the deployment of a UnityVSA system?

  A. 4.0

  B. 5.0

  C. 5.5

  D. 6.0

  Correct Answer: C

  UnityVSA requirements include: VMWare ESXi 5.x, 6.x References: http://sweden.emc.com/products-solutions/trial-software-download/unity-vsa.htm

• Question 280:

  Which feature is supported on a UnityVSA operating environment?

  A. Asynchronous Replication

  B. MCC Write Caching

  C. Quick Start Pool Provisioning

  D. Data at Rest Encryption

  Correct Answer: A

  Asynchronous Unified Replication is available natively on UnityVSA. This allows file and block resources to be replicated between UnityVSA systems, between UnityVSA and physical Unity systems, and also locally back to the same UnityVSA system