You are designing a Symmetrix VMAX Virtual Provisioning solution for a VMware vSphere
environment. What format does EMC recommend when creating a virtual disk for a Virtual
Machine?

During Symmetrix VMAX performance analysis, you notice that a collection of VMAX devices has
a front-end I/O rate that is much lower than its back-end I/O rate. What might be the reason for
this?

You are planning a VMAX configuration with FAST VP for a customer’s Exchange 2010
environment. The customer requests the database be placed on thin devices and the log files be
placed on regular devices. Some of volumes are quite large and will require metavolumes to meet
the capacity requirements.
Which metavolume configuration should you use?

A new Symmetrix array is being designed for an Oracle data warehouse. The workload is
expected to be primarily reads for batch reporting. The customer wants to maximize usable
capacity of the array and follow best practices for RAID types to optimize performance. Which
RAID level(s) should be used for the control files, data files, redo logs and archive logs?

A company plans to deploy Symmetrix VMAX arrays in their VMware vSphere environment. The
ESXi hosts will be connected to the VMAX arrays over a FC SAN. What VMAX FA port flag must
be enabled?

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 customer has an environment where one application has a very high, sequential, write-intensive
workload. They would like to use Dynamic Cache Partitioning to isolate this workload from the
other applications. How should DCP be configured to separate the write-intensive workload from
the other applications?

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A new storage request is submitted for the production instance of an new application from
development. The request is for 3 x 200GB LUNs on a recently purchased VMAX array.
While discussing the request with the application team they mention that performance of their test
environment has been poor during load testing on an existing DMX-4 array. You check
Performance Manager statistics for the DMX-4 and discover that they are using 3 x 100GB LUNs
for testing and they are sometimes reaching Device Write Pending.

What will best avoid the Write Pending issue in production?

What allows VMkernel to reduce memory duplication in the virtual machine’s memory?

You are planning a migration for 20 VMware ESXi 5.0 servers from a DMX-4 to a new EMC VMAX
array. Each server uses VMFS volumes and hosts more than 50 VMs. The customer reports their
environment workload tends to be low outside of normal business hours but their service level
agreement only permits one 4-hour offline window per quarter. Which tool do you recommend be
used to migrate the ESXi servers to the VMAX?