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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?

A company is investigating memory issues with a VMware vSphere implementation. How would
the company determine if there are memory issues at the host level when monitoring through a
vSphere vCenter Server?

Which database workload is suitable for EFD configuration?

You are designing a Symmetrix VMAX Virtual Provisioning solution for a VMware vSphere
environment. Storage allocation must be guaranteed for some mission critical virtual machines.
What format should you recommend when creating virtual disks for these mission critical virtual
machines?

You are designing a boot from SAN solution for VMware ESXi servers connected to a Symmetrix
VMAX storage array. What is a consideration?

A customer has a Symmetrix VMAX array shared between several different business groups.
Each of the hosts has Solutions Enabler installed to support TimeFinder operations. There is a
requirement that each business group can only manage its assigned LUNs. Which security
technology would enable that requirement?

A new data warehouse will be hosted on an existing 4-engine VMAX array. The database server
has 4 HBAs connected at 4Gb/s. Due to limited SAN switch ports only port 0 on each VMAX FA is
connected – also at 4Gb/s.
The workload is expected to require at least 2300MB/s of reads at 128KB I/O size and must
maintain performance in case of any major component failure in the host, switch or array. Assume
that the existing workload on the VMAX does not exceed 100MB/s per port and assume that the

ports can sustain up to 300MB/s without exceeding 70% utilization.
What is the minimum number of FA ports needed to spread the workload evenly across all 4
VMAX engines and meet the above performance requirements?

A customer has a Symmetrix VMAX attached to 12 UNIX servers through a SAN fabric. They
would like to prevent unauthorized access at the port level. Which Symmetrix security feature
would satisfy that requirement?