E20-807 Online Practice Questions and Answers

Based on the Array Utilization Dashboard shown in the exhibit, a frontend port is showing higher utilization on Director 1. How can this situation be corrected?

A. Add another engine to provide for Frontend Emulation CPUs

B. Redistribute the workload onto other available ports

C. Increase cache on the engine

D. Add additional capacity to support the frontend workload

What is the best practice for FA utilization in a VMAX3 array?

A. 50% busy with two engines

B. 50% busy with more than two engines

C. 50% busy with one engine

D. 50% busy with two or more engines

In an SRDF/Metro environment, where is the vWitness lock service, -storwlsd, running?

A. On the vWitness instance

B. On the target array

C. On the source array

D. On the production host

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

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

What is a characteristic of sequential read I/Os on a VMAX3 array?

A. Prefetch task will stop when sequential I/O stops

B. Higher priority than the host I/O

C. DA will start the prefetch task

D. tracks are red into cache by the frontend director

A company's regulatory controls require all management accounts used by individuals with access to data stored on storage systems must comply with password strength and active duration policy.

What should be used to meet this requirement?

A. LDAP-SSL

B. X.509 Certificate

C. Local Unisphere

D. Windows Local

Performance analysis on a VMAX3 has shown that the current workload is 15,000 IOPS at an average response time of 13 ms. Workload will increase to 30,000 IOPS.

What will be the response time expectation?

A. 14 ms

B. Between 13-26 ms

C. 26 ms

D. Greater than 26 ms

A VMAX3 storage group is not SLO compliant. No changes to the application I/O profile have occurred.

Which factor may be responsible for the SLO compliance impact?

A. storgnsd daemon was enabled

B. Host queue depth setting was changed

C. Increase write activity from the application

D. Increased activity from other storage groups sharing the same ports/directions

On a VMAX3 array, for which type of workload does FlashBoost help in optimizing performance?

A. Sequential Reads

B. Sequential Writes

C. Random Writes

D. Random Reads