A customer has a mix of Windows 2003 and Windows 2008 virtualized guests deployed in
their vSphere v4 environment. They have purchased a new VNX array and are also
upgrading their ESX servers from V4.0 to V5.0. Their VMware administrators are creating
the new target LUNs and VMFS file systems for their datastores. They have noticed that the
alignment offset on the new array is not the same as their old array, so they are concerned
about disk crossing on the new array. How would you respond to the customer?

A customer has deployed various applications on a VNX storage system. During a
performance analysis, you notice several hot spots on different drives and enclosures. Upon
further investigation you discover that all storage system ports are in use, and that all ports
are supporting the same number of enclosures and disk drives. What will you recommend to
your customer?

You have designed an Auto-tiering solution using Flash, SAS, and NL-SAS disks in your
storage pool. Your design was implemented and scheduling has been running daily. The
customer reports that there is no data in the Flash drive tier. Why is this the case?

A customer has a VNX system to provide storage for a VMware 4.1 Cluster with four ESX
hosts. The ESX hosts are running Exchange servers and other application servers. The
customer is using a virtual machine as a Replication Manager. A VMware proxy host is used
to get crash-consistent replicas for the Exchange mail stores.
Which volume access type is recommended for the Exchange servers?

A customer has deployed a new application on a host using VNX storage. The new
application I/O size is 512 KiB, has a 50/50 read-write ratio, and its write behavior is
sequential and bursty. All other host applications are characterized by 4 KiB I/O random
writes. The customer has noticed degraded overall VNX performance during write bursts,
which is caused by the new application. Your analysis reveals a high rate of forced flushing,
as well as significant CMI congestion. What can you recommend to improve overall VNX
performance?

An application generates 500 random 8 KiB IOPS with a R/W ratio of 3:1. An asynchronous
mirror is started on the application LUN. The update cycle is configured to be 30 minutes,
and updates take 15 minutes to complete. Assume that the data rate is constant. What is the
minimum space that should be configured for the Reserved LUN Pool on the secondary
VNX?

As a result of suffering a catastrophic failure, your customer has requested a DR solution.
The solution must introduce a higher level of availability for their Exchange 2010 system.
The customer wants a strategy that involves Replication Manager and DAG with third-party
replication enabled. In what state(s) of the database would the replication occur?

A customer has recently implemented Microsoft Exchange 2010 on a VNX storage system
that hosts a variety of application servers. The Exchange implementation is currently using
RAID 5 (4+1) and uses FAST Cache for the database volumes, but is not using FAST VP.
Performance has been significantly diminished.
What would you recommend to the customer?

A clone source LUN is 512 GiB in size. It performs 500 random 8 KiB IOPs with a 3:1 R/W
ratio. As part of ongoing testing, the clone is fractured for 10 minutes and then
resynchronized. The testing is performed every hour.
How much data (to the nearest GiB) is read from the source LUN as part of the
resynchronization process?

A customer with an existing VNX for File implementation wants to enable deduplication on a
file system, based on the following specifications:
Idle File System
Number of files: 1 M
Average file size: 50 KiB
Estimated deduplication: 30%
What is the estimated time for initial deduplication?