EMC E20-326 Online Practice Questions and Exam Preparation

EMC E20-326 Online Questions & Answers

• Question 101:

  An SRDF configuration is running in SRDF/A mode. The customer's decision to switch from SRDF/A to SRDF/S is rejected. At which percentage of write cache in use at the SRDF R2 site will this occur?

  A. 50%
  B. 100%
  C. 80% D. 90%
  A. 50%

• Question 102:

  A Symmetrix Customer has an application that runs 24 hours a day, 7 days a week and 365 days a year. They would like to replicate the application data simultaneously to four branch offices on a nightly basis.

  The branch offices have EMC VNX arrays.

  Which solution would you recommend?

  A. Use TimeFinder/Clone to replicate the production application. Then use Open Replicator cold push to replicate the clones.
  B. Use Open Replicator cold push to replicate the production devices
  C. Use Open Replicator hot push to replicate the production devices.
  D. Use TimeFinder/Snap to replicate the production application. Then use Open Replicator hot push to replicate the VDEVs.
  A. Use TimeFinder/Clone to replicate the production application. Then use Open Replicator cold push to replicate the clones.

• Question 103:

  A customer is interested in utilizing TimeFinder/Snap to generate a backup copy of an application every six hours. In order for you to calculate the SAVE Pool requirements you will need to run Change Tracker. To which value should you set the reset interval length for DeltaMark?

  A. 21600
  B. 10800
  C. 86400
  D. 32400
  A. 21600

• Question 104:

  A customer has a Symmetrix VMAX storage array configured with 94.9% utilization of raw storage capacity, according to symwin. The frame is configured as shown in the exhibit. The SRDF/A replication suspends regularly. Investigation shows write pending values are too high for the R1 volumes. I/O requirements for the DSE pool are computed.

  

  If DSE is used, where and how should the pool be built?

  A. FC disk on all engines
  B. FC disk on engines 1 and 8
  C. SATA disk on all engines
  D. EFD on all engines
  A. FC disk on all engines

• Question 105:

  Which workload is an ideal candidate for FAST VP?

  A. Skewed
  B. Uniform
  C. Static
  D. Concurrent
  A. Skewed

• Question 106:

  You are designing an SRDF/S over Fibre Channel solution. Data centers are 30 kilometers apart. 2 Gb/s FC links are in place. How many buffer to buffer credits would you recommend in order to maximize the utilization of the links?

  A. 30
  B. 15
  C. 60
  D. 180
  A. 30

• Question 107:

  The SiRT featured is enabled on the RA in an SRDF/S configuration. When does the host receive the acknowledgement of a write?

  A. IO is written to the cache at the R2 site and acknowledgement is received by the R1 site from R2 site.
  B. IO is written at R1 site cache and is sent to the R2 site.
  C. IO is written to R2 site cache but not acknowledged yet.
  D. Immediately after the IO is written to R1 cache.
  A. IO is written to the cache at the R2 site and acknowledgement is received by the R1 site from R2 site.

• Question 108:

  A Symmetrix VMAX SRDF/A customer is planning to implement DSE. What are the recommended DA and RA utilization levels before implementing DSE?

  A. Less than 50%
  B. Less than 16%
  C. Less than 25%
  D. Less than 70%
  A. Less than 50%

• Question 109:

  What are benefits of SRDF/A Multi-Session Consistency?

  A. Consistency of R2 data across devices in multiple SRDF/ A sessions.Coordinated cycle switching of the SRDF/A sessions.
  B. Sessions can be within or across Symmetrix arrays. Allows combining SRDF/S groups and SRDF/A groups.
  C. Coordinated cycle switching of the SRDF/A sessions. "Failure" conditions are detected, so only the session in which the failure occurs will be stopped.
  D. Provides Consistency Group "Trip" processing. "Failure" conditions are detected, so only the session in which the failure occurs will be stopped.
  A. Consistency of R2 data across devices in multiple SRDF/ A sessions.Coordinated cycle switching of the SRDF/A sessions.

• Question 110:

  Refer to the exhibit.

  

  A customer has a Symmetrix VMAX storage array configured with FAST VP using three storage tiers. Policies are active for all storage groups on the array. The array has been in service for over 30 days. When using Unisphere for VMAX to check, the customer notices no active ingress and egress of extents for the EFD tier. The current configuration of FAST is shown in the exhibit.

  Which parameter should be changed?

  A. FAST VP Data Movement Mode
  B. Data Movement Mode
  C. Workload Analysis Period
  D. Min Initial Workload Period
  A. FAST VP Data Movement Mode