EMC E20-326 Actual Free Exam Questions & Community Discussion

Exam Code/Number: E20-326
Exam Name/Title: Symmetrix Solutions Design Exam for Technology Architects
Certification Provider: EMC
Corresponding Certification: Technology Architect

Exam Questions: 235
Updated On: May 27, 2026

Question #21

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. EFD on all engines

B. FC disk on engines 1 and 8

C. FC disk on all engines

D. SATA disk on all engines

Discussion 0

Correct Answer: C Vote an answer

Question #22

What is a best practice when configuring a Symmetrix VMAX for optimal performance and cost?

A. A dedicated array based upon application requirement.

B. Different drive types are mixed and spread throughout the array.

C. A dedicated array with Enterprise Flash Drives (EFD).

D. Dedicated engines have appropriate drive types to meet application needs.

Discussion 0

Correct Answer: B Vote an answer

Question #23

A customer plans to migrate existing AIX and Windows hosts as well as Mainframe z/OS LPARs to a new VMAX array. Performance data is needed to design the VMAX volumes configuration layout. Which host performance data do you request from the customer?

A. IOSTAT, Perfmon, SMF/CMF

B. SAR, Perfmon, WRKDSKSTS

C. STP, SAR, WRKDSKSTS

D. IOSTAT, SAR, SMF/CMF

Discussion 0

Correct Answer: A Vote an answer

Question #24

When working with Fibre Channel connectivity, which statement is correct about buffer credits?

A. BB_Credits should be used with long distance links, but do not affect throughput.

B. Insufficient BB_Credits will result in the degradation of throughput over long distance links.

C. BB_Credits should be minimized so they do not affect throughput over long distance links.

D. BB_Credits are not needed with long distance links.

Discussion 0

Correct Answer: B Vote an answer

Question #25

A customer is implementing a Microsoft Exchange environment on a Symmetrix VMAX. The environment will be deployed on 600 GB FC 15K drives using RAID 5 data protection. The application generates 2000 I/O per second with an I/O pattern that is 75% reads and 25% writes.
What is the minimum number of drives recommended to support the application?

A. 24

B. 12

C. 18

D. 32

Discussion 0

Correct Answer: A Vote an answer

Question #26

You are designing a Symmetrix VMAX SRDF/S over Fibre Channel solution. The production and remote data centers are 50 kilometers apart. What is the expected write response time delay due to latency?

A. 0.25 ms

B. 1 ms

C. 0.5 ms

D. 2 ms

Discussion 0

Correct Answer: C Vote an answer

Question #27

A Symmetrix VMAX hosts four applications. Each application is assigned a named dynamic cache partition. Two of the partitions are static and two are flexible. The write pending limit for each partition is set to 60%.
What will happen if an application running in a static partition reaches the write pending limit set for that partition?

A. Cache will be borrowed from a flexible partition

B. The write pending limit of the partition will be raised until it reaches 80%

C. Cache will be borrowed from the default partition

D. Host write activity to that partition will be throttled

Discussion 0

Correct Answer: D Vote an answer

Question #28

What is a supported mode combination for disk-based Cascaded SRDF?

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

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/A

Discussion 0

Correct Answer: D Vote an answer

Question #29

By default which discounted rate does Tier Advisor apply to software using SATA storage?

A. 30%

B. 40%

C. 60%

D. 50%

Discussion 0

Correct Answer: D Vote an answer

Question #30

A customer recently reconfigured their Microsoft Exchange 2010 environment. They placed the log and system files on the L:\ drive and mounted the mailbox stores on L:\SG1DBMP. The customer reports that they updated the associated Replication Manager replica job to reflect the change. However, the mounts to the backup server fail.
What should you advise the customer?

A. The mailbox store replica must be part of the same replica job as the log files.

B. Mount both the logs and database to separate mount points within a folder on theC.drive

C. Log and system files on same volume are not supported.

D. Additional clone targets need to be added to the storage pool.

Discussion 0

Correct Answer: B Vote an answer

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