EMC Technology Architect E20-326 Questions & Answers

• Question 111:

  Which SRDF/A feature is recommended for improving resiliency from link outages?

  A. Delta Set Extension

  B. Increased cache size

  C. Link Limbo Timer

  D. Write Pacing

  Correct Answer: A

• Question 112:

  You have been working with a customer on a new SRDF/A design and need to validate the configuration using host data. Which tool do you use?

  A. BCSD

  B. SymmMerge

  C. E-lab Advisor

  D. Tier Advisor

  Correct Answer: A

• Question 113:

  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. Provide more bandwidth and cache.

  B. Ensure that the SRDF devices on the source and target arrays use the same protection. Provide more bandwidth.

  C. Ensure that the SRDF devices on the source and target arrays reside on disks with the same RPM. Provide more remote adapters.

  D. Provide more remote adapters. Upgrade both arrays to Symmetrix VMAX.

  Correct Answer: B

• Question 114:

  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.

  Correct Answer: A

• Question 115:

  What is a supported mode for disk based Cascaded SRDF?

  A. First leg - SRDF/S, Second leg - SRDF/A

  B. First leg - SRDF/A, Second leg - SRDF/A

  C. First leg - SRDF/S, Second leg - SRDF Adaptive Copy Write Pending Mode

  D. First leg - SRDF/S, Second leg - SRDF/S

  Correct Answer: A

• Question 116:

  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%

  Correct Answer: A

• Question 117:

  A customer is facing intermittent outages on their SRDF/A link. Typically, an outage does not last for more than 5 minutes. The storage administrator is planning to configure transmit idle along with the DSE.

  Applications on the production VMAX generate approximately 1500 write operations every second. Assuming that all writes are 128KB in size, how much disk space is required in the DSE pool?

  A. 45GB

  B. 55GB

  C. 65GB

  D. 80GB

  Correct Answer: B

• Question 118:

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

  A. RAID-5 devices spread out over few disks

  B. RAID-1 devices on dedicated disks

  C. RAID-6 devices on dedicated disks

  D. RAID-1 devices spread out over many disks

  Correct Answer: D

• Question 119:

  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

  Correct Answer: B

• Question 120:

  When performing a consistent mode change from SRDF/A to SRDF/S, how many cycles does this process take?

  A. After two cycle switches

  B. After one cycle switch

  C. Immediately

  D. After the cycle time expires

  Correct Answer: A