EMC Technology Architect E20-326

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EMC E20-326 Exam Syllabus Topics:

EMC Symmetrix Solutions Design Exam for Technology Architects Sample Questions:

Question #1
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 the devices involved are R2 targets
B. Front-end and back-end IOs are unrelated to each other
C. Front-end IOs outnumber the back-end IOs, because some IOs are satisfied in cache
D. Front-end IOs outnumber the back-end IOs, because there were a lot of clone operations being performed

Question #2
What is a best practice when configuring a Symmetrix VMAX for optimal performance and cost?

A. Dedicated engines have appropriate drive types to meet application needs.
B. Different drive types are mixed and spread throughout the array.
C. A dedicated array with Enterprise Flash Drives (EFD).
D. A dedicated array based upon application requirement.

Question #3
You are designing a new VMAX array. The customer's primary concern is maximizing capacity available to the host. What RAID protection should you recommend?

A. RAID-5 (7+1)
B. RAID-1/0
C. RAID-6 (6+2)
D. RAID-5 (3+1)

Question #4
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 through Friday as shown in the exhibit. During an average business day, the transaction log processes 87 GB worth of data.

Following EMC best practices, how many IOPS should be subtracted from the overall write IOPS, when calculating for the database writes?

A. 386
B. 1544
C. 396
D. 792

Question #5
You are proposing a new VMAX array with FAST VP. The customer reports their
application needs a small amount of EFD capacity and asks whether 200 GB EFDs or 400 GB EFDs would provide better overall performance. Which drive size do you recommend and why?

A. 200 GB EFDs. They support higher IOPS than 400 GB EFDs.
B. 200 GB EFDs. They support higher I/O density than 400 GB EFDs.
C. 400 GB EFDs. They support higher IOPS than 200 GB EFDs.
D. 400 GB EFDs. They support higher I/O density than 200 GB EFDs.

Solutions: