EMC EMC Certifications E20-807 Questions & Answers

• Question 41:

  XtremIO is part of a company's FAST.X environment with a VMAX All Flash array and will remain as part of the configuration. The VMAX All Flash array is configured for SRDF as well. In addition, a large VMware environment is hosted on the XtremIO, however, the VMware datastore devices are not virtualized to the VMAX All Flash array.

  If the company wants to have remote replication for the VMware devices, how can this be accomplished?

  A. Virtualize the VMware datastore devices using incorporation and add to the SRDF configuration

  B. Connect an additional VMAX3 or VMAX All Flash array to the XtremIO array and enable SRDF

  C. Virtualize the VMware datastore devices using encapsulation and add to the SRDF configuration

  D. Enable SRDF on the XtremIO array and add the VMware datastore devices to the configuration

  Correct Answer: A

• Question 42:

  A Non-Disruptive (NDM) session is active between a VMAX3 array and a VMAX All Flash array. What happens during the NDM Cutover operation?

  A. I/O paths to both arrays are active

  B. Paths to the VMAX3 are made inactive

  C. Host discovers additional paths to the arrays

  D. Application's storage configuration is replicated

  Correct Answer: B

  A cutover operation moves the target devices out of pass-through mode, initiates data synchronization from the source to the target and makes the paths to the source array inactive so that all I/Os are being serviced by the target array.

• Question 43:

  Refer to the Exhibit.

  

  Migration of data from a VMAX to a VMAX All Flash array is planned. the target array has been installed and RDF connectivity between the two arrays has been established. In addition, the application host is accessing data on the source array.

  What is the result when the Non-Disruptive Migration Setup operation is performed?

  A. Creates RDF pairs and places them in pass-through mode

  B. Replicates the storage configuration from the source to the target array

  C. Creates an empty Dynamic RDF group on the source and target arrays

  D. Zones the application host initiators to the target array

  Correct Answer: C

• Question 44:

  How can TDEVs be moved between the SRPs when using FAST.X?

  A. By associating the TDEVs with a different SLO

  B. By changing the Virtual Pool for the TDEVs

  C. By changing the SRP associated with the storage group

  D. By using Virtual LUN Migration

  Correct Answer: C

  Reference: https://czech.emc.com/collateral/technical-documentation/h14568-fast.x-design-bestpractices-tech-note.pdf (19)

• Question 45:

  A VMAX3 array needs additional capacity added. The array is providing acceptable performance and the administrator wants to ensure performance is maintained as new drives are added.

  A VMAX3 array needs additional capacity added to maintain performance?

  A. Add storage to all tiers maintaining the existing ratio

  B. Add storage to a new internal SRP

  C. Add storage to the most over utilized tier

  D. Add storage to a new external SRP

  Correct Answer: A

• Question 46:

  After a failure of a Concurrent SRDF/Star configuration, the Star query shows:

  

  Which Star action(s) should be executed first to recover from this failure?

  A. Reset 1st Target Site

  B. Cleanup 2nd Target Site, followed by Reset 2nd Target Site

  C. Disable Star

  D. Cleanup 2nd Target Site, followed by Switch to 2nd target site

  Correct Answer: D

• Question 47:

  Refer to the Exhibit.

  

  Which port assignments for external array connectivity satisfy high availability and best practices for a dual engine VMAX3 configuration with FAST.X?

  A. Director 1 port 4, Director 1 port 5 Director 4 port 4, Director 4 port 5

  B. Director 1 port 4, Director 1 port 9 Director 1 port 24, Director 1 port 31

  C. Director 1 port 4, Director 1 port 9 Director 2 port 4, Director 2 port 9

  D. Director 1 port 4, Director 2 port 4 Director 1 port 8, Director 4 port 24

  Correct Answer: C

• Question 48:

  To determine Service Level Objective compliance on a VMAX3, where is the I/O response time measured?

  A. Frontend Directors

  B. Host Bus Adapters

  C. SAN Switches

  D. Backend Directors

  Correct Answer: B

• Question 49:

  Based on business requirements, Concurrent SRDF/Star has been implemented with host infrastructure at the Workload and Asynchronous sites. A disaster fault has occurred. Star query shows:

  

  Which site should the workload be moved to and which site's data should be kept?

  A. Switch to the Synchronous site Keep the Synchronous site data

  B. Switch to the Asynchronous site Keep the Asynchronous site data

  C. Switch to the Synchronous site Keep the Asynchronous site data

  D. Switch to the Asynchronous site Keep the Synchronous site data

  Correct Answer: D

• Question 50:

  A new VMAX3 array has been added to the environment. Unisphere for VMAX has discovered the array and can be used to manage the array. However, Unisphere is not able to collect any performance data for the array.

  What is a possible cause?

  A. Registration for performance data collection has not been done

  B. Performance data repository is full

  C. storgnsd daemon is not running

  D. Root Cause Analysis Interval was changed

  Correct Answer: A