EMC E20-326 Online Practice Questions and Exam Preparation

EMC E20-326 Online Questions & Answers

• Question 151:

  The NAR file on a source CLARiiON array is 12 hours of 600 second intervals. You require a minimum of 20 intervals of complete data. How many 30-minute trace files will need to be collected from the CLARiiON for a Tier Advisor analysis?

  A. 4
  B. 5
  C. 6
  D. 7
  A. 4

• Question 152:

  When designing SRDF/A, what is the recommended configuration for the DSE pool?

  A. RAID 1 devices spread out over many disks
  B. RAID 1 devices on dedicated disks
  C. RAID 5 devices spread out over few disks
  D. RAID 6 devices on dedicated disks
  A. RAID 1 devices spread out over many disks

• Question 153:

  You have used BCSD to model an SRDF/S solution. What information can be obtained from the model?

  A. Bandwidth requirement, RA utilization, and volume exceptions
  B. RA utilization, DA and cache utilization, and host service time
  C. Cache utilization, RA utilization, and potential problem volumes
  D. Bandwidth requirement, RA utilization, and network latency
  A. Bandwidth requirement, RA utilization, and volume exceptions

• Question 154:

  What describes the difference between Asynchronous and Synchronous Copy on First Write (COFW)?

  A. Asynchronous mode results in fewer disk operations during COFW.
  B. Asynchronous results in a shorter host response time as there is no COFW penalty compared to Synchronous.
  C. Asynchronous mode results in more disk operations during COFW.
  D. Asynchronous and Synchronous mode result in similar host response time as both suffer the COFW penalty.
  B. Asynchronous results in a shorter host response time as there is no COFW penalty compared to Synchronous.

• Question 155:

  Refer to the Exhibit.

  

  The illustration shows the workload characteristics of a DMX which is due to be upgraded to a VMAX. Which conclusion can you draw?

  A. Front-end IOs outnumber the back-end IOs, because some IOs are satisfied in cache
  B. Front-end IOs outnumber the back-end IOs, because the devices involved are R2 targets
  C. Front-end and back-end IOs are unrelated to each other
  D. Front-end IOs outnumber the back-end IOs, because there were a lot of clone operations being performed
  A. Front-end IOs outnumber the back-end IOs, because some IOs are satisfied in cache

• Question 156:

  What is a valid FAST VP policy that would be recommended by Tier Advisor?

  A. EFD 400GB RAID 5 (3+1) -30% FC 15K 300GB RAID 1 - 30% SATA 7200 1TB RAID 6 (6+2) - 30%
  B. EFD 400GB RAID 5 (3+1) -30% FC 15K 300GB RAID 1 - 30% FC 15K 400 GB RAID 5 (3+1) - 20% SATA 7200 1TB RAID 6 (6+2) - 30%
  C. EFD 400GB RAID 5 (3+1) -10% FC 15K 300GB RAID 1 - 50% SATA 7200 1TB RAID 6 (6+2) - 40%
  D. EFD 400GB RAID 5 (3+1) -10% FC 15K 300GB RAID 1 - 100% SATA 7200 1TB RAID 6 (6+2) - 100%
  C. EFD 400GB RAID 5 (3+1) -10% FC 15K 300GB RAID 1 - 50% SATA 7200 1TB RAID 6 (6+2) - 40%

• Question 157:

  A customer plans to migrate existing AIX, HP-UX, and Windows hosts from a Symmetrix DMX-3 to a new VMAX array. You need performance data from the existing array to configure the layout of the new VMAX volume configuration. Which tools can be used to collect Symmetrix array performance data?

  A. ControlCenter Performance Manager STP Collector
  B. EMC Workload Generator STP Navigator
  C. Storage Configuration Advisor STP Collector
  D. ControlCenter Performance Manager SymmMerge
  B. EMC Workload Generator STP Navigator

• Question 158:

  You are implementing a FAST VP solution for a customer and want to start with a conservative FAST VP relocation rate. What would be the recommended value for the relocation rate?

  A. 4
  B. 7
  C. 10
  D. 1
  D. 1

• Question 159:

  Using the default the 5875 SRDF/A cycle time, what is the recovery point objective in seconds?

  A. 60
  B. 30
  C. 90
  D. 120
  B. 30

• Question 160:

  Refer to the exhibit.

  

  You have used BCSD to model an SRDF/A solution. Based on the SRDF/A risk analysis shown what are your recommendations?

  A. Ensure that the SRDF devices on the source and target arrays use the same protection and reside on disks with the same RPM. Provide more remote adapters.
  B. Provide more bandwidth. Upgrade both arrays to Symmetrix VMAX.
  C. Ensure that the SRDF devices on the source and target arrays use the same protection and reside on disks with the same RPM. Upgrade both arrays to Symmetrix VMAX.
  D. Provide more bandwidth and more remote adapters. Upgrade both arrays to Symmetrix VMAX.
  A. Ensure that the SRDF devices on the source and target arrays use the same protection and reside on disks with the same RPM. Provide more remote adapters.