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EMC E20-816 Exam Syllabus Topics:

EMC Symmetrix Solutions Expert Exam for Technology Architects Sample Questions:

1. You are designing a new Symmetrix VMAX storage array to replace a client's Symmetrix DMX4.
Performance data is captured and examined for the DMX4. During the discovery phase, the client states that their critical business application has increased response times when establishing SRDF for 20 logical volumes. Examination of the current configuration of the logical volumes used for the application reveals the following:
-Ten 4way meta volumes at 200 GB
-
Five 8 way meta volumes at 472 GB
-
Five logical volumes at 59 GB
Performance analysis shows that the device write pending counts for the five logical volumes at 59 GB are higher than other volumes used by the application.
The client expects migration events to require a complete establishment of their DR environment logical volumes. How should all the devices be configured on the target Symmetrix VMAX storage array?

A) Virtual meta volumes, minimum 2 members
B) Meta volumes, minimum 3 members
C) Virtual provisioned single volumes
D) Meta volumes, minimum 4 members

2. Click on the calculator icon in the upper left corner. Refer to the exhibit.

You are designing the Symmetrix VMAX architecture for a DAS-to-SAN SQL Server migration. Currently all user databases reside on a single locally attached disk enclosure, mounted to "N:\". You have decided on RAID-5 protected 15,000 RPM drives for the new SQL database and RAID-1 for the transaction log.
Last week, you configured Perfmon to record the current IOPS load of the databases during the 8-hour business day, Monday thru Friday as shown in the exhibit. During an average business day, the transaction log processes 87 GB worth of data.
Following EMC best practices, what is the minimum number of spindles that must be allocated for optimal transaction log performance?

A) 2
B) 8
C) 4
D) 10

3. For a 2 engine VMAX, what is the minimum number of Enterprise Flash Drives required to ensure balanced performance across the backend excluding hot spares?

A) 8
B) 4
C) 12
D) 16

4. Refer to the exhibit.

A customer has been performing VLUN Migrations between identical pools and noticed the migration times have varied from minutes to hours. What would explain the variations in the rate of migration?

A) Random read misses exceeding 50%
B) Number of simultaneous migration sessions has been exceeded
C) Quality of service for VLUN has been set to 5
D) Write Pending exceeding 50%

5. A company has a VMware vSphere 5.0 ESXi host using NUMA. This host is experiencing poor performance. Which BIOS settings on the ESXi host could help alleviate this performance issue?

A) Disable Node Interleaving
B) Disable HyperThreading
C) Enable Node Interleaving
D) Enable HyperThreading

Solutions: