EMC Technology Foundations E20-816

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EMC E20-816 Exam Syllabus Topics:

EMC Symmetrix Solutions Expert Exam for Technology Architects Sample Questions:

Question #1
An existing 2-engine VMAX array has 192 x 450GB 15K Fibre Channel drives in a single Virtual Provisioning pool. Two Linux database hosts are connected to the array and both are running PowerPath.
Host oradb01 is connected to the E0 FA ports on each director and is meeting the customer performance SLA. Host oradb02 is connected to the G0 FA ports on each director - and for the past 3 days this host has been experiencing poor performance during peak activity in the afternoons.
What steps do you take to identify likely bottlenecks?

A. Open a case with EMC Support and upload Oracle Statspack information
B. Use SMC to check for Virtual Pool alerts, use SPA to measure drive response times
C. Run iostat -x in order to compare I/O size and read/write ratio of the two hosts
D. Check the host for queued I/Os, use SPA to examine I/O size and utilization on the G0 FA ports

Question #2
A company is considering different options in the storage placement of a VMware vSphere
5.0 swap file. When considering placement options, what type of storage would vMotion performance be reduced via the placement of the swap file in that location?

A. SAS drives utilizing FC
B. SAS Drives on Local Storage
C. SAS Drives utilizing NFS
D. SAS drives utilizing iSCSI

Question #3
A new EMC customer recently installed their first VMAX and a complete suite of EMC management tools. Their lead capacity planner attended training and has started monitoring the VMAX. You receive a call and this person describes the measurements observed. During the period of heaviest workload, reported I/O rates on certain Fibre Channel ports is nearing 2,000/second but those ports only display about 10% utilization. What is the likely cause?

A. I/O block size is very small
B. Striped metavolumes report invalid IOPS
C. I/O block size is very large
D. Sequential prefetch skews throughput %

Question #4
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 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 43 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. 6
C. 4
D. 10

Question #5
You have been requested to design a Symmetrix VMAX FAST-VP storage solution. When considering skew, what is a primary performance metric that should be used during the design process?

A. Device MB/sec
B. Physical Disk MB/sec
C. FA IOPS
D. Device IOPS

Solutions: