EMC EMC Certifications E20-807 Questions & Answers

• Question 21:

  Refer to the exhibit.

  

  Which failure scenario requires a reconfiguration of this Concurrent SRDF/Star configuration?

  A. Link failure between Sites A and C

  B. Link failure between Sited A and B

  C. Site A failure

  D. Site B failure

  Correct Answer: D

• Question 22:

  What is in accurate statement about Unisphere for VMAX and Solutions Enabler permission management?

  A. Authorization checking is disabled by default for Unisphere and Solutions Enabler and must be enabled before configuring permissions

  B. Solutions Enabler can assign up to four roles per user and Unisphere can only assign up to two roles per user

  C. Unisphere and Solutions Enabler permission information is maintained in separate symauth databases

  D. Unisphere has a more explicit authentication mechanism for users while Solutions Enabler uses the operating system user credentials

  Correct Answer: C

• Question 23:

  SRDF/Metro has been deployed in a non-Witness configuration. Each data center has one VMAX3 array. What is the SRDF pair state under normal operating conditions?

  A. Consistent

  B. Synchronized

  C. ActiveActive

  D. ActiveBias

  Correct Answer: A

• Question 24:

  On a VMAX3 array, when will the backend director give equal priority to read miss and destage operations?

  A. At 5% of the System Write Pending Limit

  B. At 50% of the System Write Pending Limit

  C. At 75% of the configured cache in the array

  D. At 75% of the SRDF/A cache usage

  Correct Answer: B

• Question 25:

  When utilizing storage on a VMAX3, what should be created for each application/server to assist in proper performance analysis over time?

  A. Gaussian graphs

  B. Trendline graphs

  C. Stacked graphs

  D. Baseline graphs

  Correct Answer: C

• Question 26:

  A company is evaluating the deployment of SRDF/Star on VMAX3 arrays. One of the concerns is that the SRDF daemon represents a single point of failure.

  How could this concern be addressed?

  A. RDF daemon process runs on the embedded Tools Virtual Machines and has built-in high availability.

  B. Run RDF daemons on multiple management stations at the workload site. RDF daemons will cooperate with each other.

  C. Run an RDF daemon on one management station at each of the three sites. If the workload site RDF daemon fails, one of the RDF daemons from the other two sites will take over.

  D. RDF daemon process runs on the VMAX3 array. If the workload site RDF daemon fails, the RDF daemon from one of the other sites will take over.

  Correct Answer: D

• Question 27:

  What is the starting point for a new SRDF/Metro deployment?

  A. Empty RDF group and Staging RDF group between two VMAX3 arrays SRDF pairs in a Staging group in a Suspended state

  B. RDF group between two VMAX3 arrays SRDF pairs in an Active mode and a Suspended state

  C. RDF group between two VMAX3 arrays SRDF pairs in a Suspended state

  D. Empty RDF group between two VMAX3 arrays Non-SRDF devices on both arrays

  Correct Answer: D

• Question 28:

  Which Dell EMC VMAX3 point-in-time replication technology allows snapshots to be created without requiring a target volume?

  A. TimeFinder SnapVX

  B. ProtectPoint

  C. SRDF/Asynchronous

  D. Open Replicator

  Correct Answer: A

• Question 29:

  A host is currently using ports 1d4 and 4d4 in a two-engine VMAX3 and additional LUNs are required for the current host. Current total LUN count for ports 1d4 and 4d4 are 4096 each.

  Which ports will follow best practices for increasing LUN count for the application?

  A. 1d4 and 4d4

  B. 1d4 and 4d5

  C. 1d5 and 4d4

  D. 1d5 and 4d5

  Correct Answer: B

• Question 30:

  Refer to the Exhibit.

  

  Cascaded SRDF has been deployed on VMAX3 has been deployed on VMAX3 arrays. The SRDF mode has been set to Asynchronous between Sites A and B.

  Which SRDF mode is permitted between Sites B and C?

  A. Adaptive Copy Write Pending

  B. Synchronous

  C. Adaptive Copy Disk

  D. Asynchronous

  Correct Answer: C