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EMC Symmetrix Solutions Expert Exam for Technology Architects Sample Questions:

1. A customer has several Solaris 10 hosts that they will connect via FC to an EMC VMAX. The hosts are all dual-pathed with PowerPath installed. Each host will be assigned 5 volumes on the VMAX. Each volume will be an 8-member metavolume.
What is the actual throttle depth for each Solaris host?

A) 16
B) 10
C) 20
D) 80

2. Prior to creating your Symmetrix VMAX architecture for SQL, you are given a Perfmon Log view containing data for your database LUN. The file contains read and write IOPS collected over the past week, at 3-minute intervals.
Which method should you use to determine the correct IOPS target for calculating the appropriate number of RAID corrected spindles?

A) 75th percentile
B) Overall Average
C) Overall Peak
D) 90th percentile

3. Refer to the exhibit.

A customer has a Symmetrix VMAX storage array which had a capacity add completed after one year of service. Performance for a specific host application with large block I/O has not achieved expected levels of performance. The customer requests a performance review and determination of the problem.
You determine that FA processors are running 52% busy, FA ports have an average of 30 MB/s and disks in the thin storage pool are 28% utilized. Which cost effective solution should be suggested?

A) Add more cache
B) Add drives to disk pool
C) Migrate to Meta volumes
D) Use more paths to host

4. A company has a VMware vSphere ESXi 5.0 host. They have been noticing performance issues when they receive bursts of heavy I/O workloads after a relatively low period of CPU utilization. Which measure could be taken in the VM configuration to alleviate this issue?

A) Decrease monitor.idleLoopSpinUS setting
B) Increase monitor.idleLoopSpinUS setting
C) Turn on monitor.idleLoopSpinUS setting
D) Decrease priority of monitor.idleLoopSpinUS setting

5. 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 "M:\". You have decided on RAID-1 protected 15,000 RPM drives for the new SQL environment.
Last week, you configured Perfmon to record the current IOPS load.
Following EMC best practices, what is the minimum number of spindles required to satisfy the performance needs of the database?

A) 18
B) 9
C) 10
D) 20

Solutions: