EMC EMC Certifications E20-393 Questions & Answers

• Question 281:

  A storage administrator is creating a host profile in Unisphere to provide host access to block storage resources using the iSCSI protocol. The host initiators were not automatically discovered and must be manually added. In addition to the SAN host IQN, what other configuration can be performed through the "Create iSCSI Initiator Wizard" window?

  A. Enable and disable CHAP settings

  B. Create Mutual CHAP secret

  C. Create Global CHAP secret

  D. Enter CHAP username and secret

  Correct Answer: D

  A sample from a Broadcomm BIOS is provided in the figure below, illustrating the IQN assignment for the VNX iSCSI target.

  

  References: https://www.emc.com/collateral/hardware/technical-documentation/h8229-vnx-vmware-tb.pdf (page 34)

• Question 282:

  A storage administrator is configuring a storage pool on a Unity system containing Flash disks and SAS disks. What tier will the system assign to each of the disk types?

  A. Flash: Extreme Performance SAS: Performance

  B. Flash: Performance SAS: Capacity

  C. Flash: Extreme Performance SAS: Capacity

  D. Flash: Capacity SAS: Performance

  Correct Answer: A

  Hybrid pools can have up to 3 tiers (Extreme Performance, Performance, and Capacity).

  For the Extreme Performance tier, use only SAS Flashdrives.

  For the Capacity tier, use only SAS drives.

• Question 283:

  What describes the LUN Snapshot Copy operation?

  A. Parent cannot be a snapshot copy Can only copy a detached snapshot Has an independent Retention Policy from the parent

  B. Parent can be a snapshot copy Can only copy a detached snapshot Has an independent Retention Policy from the parent

  C. Parent can be a snapshot copy Can copy an attached or detached snapshot Inherits the parent Snapshot Retention Policy

  D. Parent cannot be a snapshot copy Can copy an attached or detached snapshot Inherits the parent Snapshot Retention Policy

  Correct Answer: B

  Note: You can create copies of LUNs by cloning LUNs from the Snapshot copies in a volume. These FlexClone LUNs are readable and writable copies of the LUNs as the LUN existed when the Snapshot copy was created. Before you can clone a LUN, you must create a Snapshot copy (the backing Snapshot copy) of the LUN you want to clone.

  References: https://library.netapp.com/ecmdocs/ECMP1368845/html/GUID-E0660F7B-491B-4AA0-A1A8-22B12DC6917D.html

• Question 284:

  Which technology is used by Unity Snapshots?

  A. Copy on First Write

  B. Inline Deduplication

  C. Redirect on Write

  D. Block Compression

  Correct Answer: C

  The technology used for snapshots of both block and file resources in Unity is called redirect on write.

• Question 285:

  A system administrator is configuring asynchronous remote replication for an existing NAS server and its' file systems on a Unity system. What should the administrator create to ensure all data is replicated for the NAS server and the file system?

  A. Replication sessions on each file system only

  B. Replication sessions for each file system first and then the NAS server

  C. A replication session on the NAS server and then manually create replication sessions on each file system

  D. A replication session for only the NAS server

  Correct Answer: D

  Before File Systems or VMware NFS Datastores can be replicated, the NAS Server must be replicated.

• Question 286:

  Which Unity feature provides a high bandwidth connection for large file transfers, enables proactive Service Request generation and usage license reporting, and operates on a 24x7 basis?

  A. EMC Service Center

  B. Software Licensing Central

  C. Unisphere Central

  D. EMC Secure Remote Services

  Correct Answer: D

  Benefit from secure, high-speed, 24x7 predictive monitoring and remote repair for your EMC information infrastructure. EMC Secure Remote Services (ESRS) enables EMC Customer Service to identify and proactively resolve potential issues

  before they can impact your business.

  Incorrect Answers:

  C: Unisphere Central enables administrators to remotely monitor multiple EMC VNX Series, EMC VNXe Series, EMC CLARiiON CX4 Series, and EMC vVNX storage systems residing on a common network.

• Question 287:

  A storage administrator has requested a recommendation on upgrading their VNX5600 to a comparable Unity storage array. The solution requires a maximum capacity of 3.5 PB. To meet the administrator's requirement without over provisioning the capacity, which Unity Hybrid storage array is recommended?

  A. Unity 300

  B. Unity 400

  C. Unity 500

  D. Unity 600

  Correct Answer: D

  Unity 600 delivers 1.2 TB to 3.0 PB max raw capacity. Incorrect Answers:

  A: Unity 300 delivers 3.6 TB to 900 TB max raw capacity

  B: Unity 400 delivers 1.2 PB to 1.5 PB max raw capacity

  C: Unity 500 delivers 1.2 TB to 2.1 PB max raw capacity Reference: https://store.emc.com/us/Product-Family/EMC-Unity-Products/EMC-Unity-600-Hybrid-Flash-Storage/p/EMC-Unity-600-Hybrid-Storage

• Question 288:

  DRAG DROP

  What is the correct sequence of steps taken by the storage array when an AC power failure is detected?

  Select and Place:

  

  Correct Answer:

  

  The Battery Backup Unit (BBU) provides power to the Storage Processor in the event that cabinet power is lost. The BBU is designed to power the SP long enough for the system to store SP cache content to the M.2 SSD device before powering down. The BBU includes sensors which communicate its charge and health status to the SP. In the event the BBU is discharged the SP will disable cache until the BBU has recharged. In the event the BBU has faulted or cannot sustain enough charge, an alert will be generated.

  References: https://www.emc.com/collateral/white-papers/h15084-emc-unity-introduction-to-the-unity-platform.pdf

• Question 289:

  DRAG DROP

  What is the correct sequence of steps required to deploy a Dell EMC UnityVSA?

  Select and Place:

  

  Correct Answer:

  

• Question 290:

  DRAG DROP

  The cache has sent data to the Data Reduction logic during proactive cleaning or flushing. What is the correct sequence of steps taken by the Data Reduction logic?

  Select and Place:

  

  Correct Answer: