EMC E20-807 Online Practice Questions and Exam Preparation

EMC E20-807 Online Questions & Answers

• Question 21:

  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
  B. At 50% of the System Write Pending Limit

• Question 22:

  When FAST.X is used to access five VNX arrays from a single VMAX3, what is the minimum number of DX ports required?

  A. 4
  B. 10
  C. 20
  D. 40
  C. 20

• Question 23:

  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
  C. By changing the SRP associated with the storage group

• Question 24:

  A company is using a local VMAX3 for production and another VMAX3 on a remote location for disaster recovery purposes that is 5000 kilometers away. Which SRDF mode supports an RPO of 2 seconds?

  A. SRDF/S
  B. SRDF/A
  C. SRDF.DM
  D. SRDF/A MSC
  B. SRDF/A

• Question 25:

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

• Question 26:

  Which daemon must be running on the Unisphere for VMAX server to collect performance data?

  A. storstpd
  B. storapid
  C. storgnsd
  D. storsrvd
  A. storstpd

• Question 27:

  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
  C. Stacked graphs

• Question 28:

  A company is using SRDF/AR Multi-Hop as a disaster recovery solution. Their primary application requires 27.3 TB on their primary site. How much storage capacity is required on the third site?

  A. Only 27.3 TB
  B. 27.3 to 54.6 TB
  C. Only 54.6 TB
  D. Greater than 54.6 TB
  C. Only 54.6 TB

• Question 29:

  What is the effective queue depth of a device mapped to a host with eight paths on a VMAX3 array?

  A. 64
  B. 128
  C. 256
  D. 512
  C. 256

• Question 30:

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