VMware Continues to Break Records in Storage Performance Exceeding the Requirements of the Most Demanding Enterprise

ORLANDO, FL, May 18 (MARKET WIRE) --
Today at EMC World 2009, VMware, Inc. (NYSE: VMW), the global leader in
virtualization solutions from the desktop to the datacenter, announced
record storage performance for VMware vSphere(TM) 4, the industry's first
operating system for building the internal cloud. VMware vSphere(TM) 4
has achieved 364,000 input output operations per second (IOPS) in maximum
storage throughput far exceeding the needs of even the most demanding
enterprise applications. VMware vSphere(TM) 4 outperforms any
virtualization solution on the market, nearly quadrupling its previous
record. These performance results demonstrate why customers are deploying
VMware virtualization across their datacenters, moving toward 100 percent
virtualization.

According to data collected with VMware Capacity Planner, most demanding
databases usually require a few thousand IOPS in storage performance. For
example, an Oracle database averages 1,280 IOPS for a 4-way Oracle virtual
machine. VMware vSphere 4 exceeds this requirement from a single server --
and can power up to:

-- 700,000 Microsoft Exchange mailboxes
-- 273 4-way Oracle databases
-- 10x more storage throughput than all of Wikipedia

"With such high records of storage throughput, VMware continues its
track record for industry-leading performance," said Dr. Stephen Herrod,
chief technology officer of VMware. "VMware vSphere performance
enhancements enable virtualization of the most I/O-intensive applications
in the world, helping customers justify moving to 100 percent
virtualization across their companies."

VMware vSphere 4 has an enterprise-class storage architecture for
virtualization; it incorporates a number of new high performance features
to help achieve this record I/O throughput. It includes a new
paravirtualized virtual machine storage device called pvscsi, a new
core-offload I/O system to utilize processors on multi-core systems,
processor scheduler enhancements to improve the efficiency of interrupt
delivery and associated processing, and advanced I/O concurrency updates,
all of which significantly optimize storage throughput for
high-transaction-rate workloads. VMware vSphere 4 also introduces new
scalability capabilities. By expanding server resource support to 1 TB of
RAM and 64 logical processing cores, some of the very largest and most
powerful servers can be leveraged for virtual workloads. With support for
up to 256 GB of RAM and eight virtual CPUs per virtual machine, nearly 100
percent of resource-intensive workloads such as high-end databases are
suitable for virtualization.

VMware recorded the new VMware vSphere 4 storage performance benchmark at
the EMC Partner Engineering Lab in Santa Clara, California. The test setup
included a single VMware vSphere 4 server generating I/O load on 30
enterprise flash drives (EFDs) spread across three EMC CLARiiON CX4
networked storage systems in RAID 1/0 configuration. The Iometer tool was
used to generate 8K I/O size, 100 percent Random 100 percent Read I/O
workload against the test disks in each of the three virtual machines used
in these tests.

"The greater scalability limits and better consolidation ratios with
VMware vSphere 4 enable customers to run many more virtual machines on a
single server, and yet support the storage throughput needs for all those
virtual machines," said EMC's Chad Sakac, Vice President, VMware Technical
Alliance. "The tests, performed using EMC CLARiiON CX4 networked storage
systems with 30 enterprise flash drives delivered performance comparable
with 2000 FC drives with 85% lower acquisition cost, and 95% less power,
cooling and space. These results and cost savings will illustrate that
VMware vSphere can more than meet the performance needs of any
mission-critical, resource-intensive application, while providing
additional benefits such as higher availability."

VMware vSphere 4 is expected to be generally available during the second
quarter of 2009.

For more information on these performance tests, visit
http://blogs.vmware.com/performance/ and click on the article titled,
"350,000 I/O operations per Second, One vSphere Host." For more
information on the performance enhancements of VMware vSphere 4, visit
http://www.vmware.com/files/pdf/vsphere_performance_wp.pdf.

About VMware

VMware (NYSE: VMW) is the global leader in virtualization solutions from
the desktop to the datacenter -- bringing cloud computing to businesses of
all sizes. Customers rely on VMware to reduce capital and operating
expenses, ensure business continuity, strengthen security and go green.
With 2008 revenues of $1.9 billion, more than 130,000 customers and more
than 22,000 partners, VMware is one of the fastest growing public software
companies. Headquartered in Palo Alto, California, VMware is
majority-owned by EMC Corporation (NYSE: EMC). For more information, visit
www.vmware.com.

VMware and VMware vSphere are registered trademarks and/or trademarks of
VMware, Inc. in the United States and/or other jurisdictions. All other
marks and names mentioned herein may be trademarks of their respective
companies.

Forward-Looking Statements

Statements made in this press release which are not statements of
historical fact are forward-looking statements and are subject to the safe
harbor provisions created by the Private Securities Litigation Reform Act
of 1995. Such forward-looking statements relate, but are not limited, to,
continuing customer adoption and deployment of VMware virtualization
products and expectations for the release and delivery of our products.
Actual results could differ materially from those projected in the
forward-looking statements as a result of certain risk factors, including
but not limited to: (i) the duration and deepening of negative economic or
market conditions; (ii) delays or reductions in consumer or information
technology spending; (iii) competitive factors, including but not limited
to pricing pressures, industry consolidation, entry of new competitors
into the virtualization market, and new product and marketing initiatives
by our competitors; (iv) our customers' ability to develop, and to
transition to, new products, (v) the uncertainty of customer acceptance
of emerging technology initiatives; (vi) rapid technological and market
changes in virtualization software; (vii) changes to product development
timelines; and (viii) our ability to attract and retain highly qualified
employees. These forward looking statements are based on current
expectations and are subject to uncertainties and changes in condition,
significance, value and effect as well as other risks detailed in
documents filed with the Securities and Exchange Commission, including
our quarterly report on Form 10-Q for the quarter ended March 31, 2009,
which could cause actual results to vary from expectations. VMware
disclaims any obligation to update any such forward-looking statements
after the date of this release.

Contacts:

Melinda Marks
VMware Public Relations
mmarks@vmware.com
(650) 743-4614

Steve Kerns
Fleishman Hillard for VMware
Steve.Kerns@vmware.com
(415) 318-4224
(415) 318-4078

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