To Customers and Friends of Sun Microsystems:

I couldn't be more thrilled to announce that on June 2, 2005, Sun Microsystems
and StorageTechnology Corp. (StorageTek) signed a definitive agreement under
which Sun will acquire StorageTek, a worldwide technology company that delivers
a broad range of storage management offerings. This acquisition strengthens
Sun's mission to solve complex network computing problems for governments,
enterprises, and our service providers.

When we first discussed the possibility of acquiring StorageTek, it was apparent
to me that we share similar vision for helping our customers take cost and
complexity out of their IT infrastructure. There have been and continue to be
huge issues relating to security of data assets that are paramount in customers'
minds. With the combination of Sun and StorageTek we can address these problems
like no other.

You may already know that Sun and StorageTek have a ten-year history of working
together - with StorageTek products used by many of our customers. This
announcement takes that relationship a step further. With this transaction, Sun
emerges as the leader in secure Information Lifecycle Management (ILM),
significantly expanding the value we offer to our customers. Some highlights:

* Together, we bring 60 years of shared experience in providing innovative
solutions to Compute, Data, Management, Software and Services challenges.
* Combined annual revenue of more than $13 billion, placing Sun as the fourth
largest storage company worldwide, and the undisputed leader in ILM.
* The addition of experienced and respected sales, service and support
professionals who possess deep expertise and share Sun's commitment to
innovation and customer value.
* A full suite of identity management offerings to enable compliance and
auditability of information assets.

StorageTek's products and services will be integrated into Sun's product line
once this agreement is formally closed, and customers of StorageTek will
continue to be serviced under the terms of their existing agreements. An
integration team has been established to oversee a smooth integration of
operations, including management, engineering, sales and service personnel.

As the agreement is subject to regulatory and shareholder approval, until it
closes Sun and StorageTek will continue to operate separately from each other.
We anticipate closing this arrangement during either the first or second quarter
of Sun's 2006 fiscal year.

You can learn more about today's announcement by visiting
http://www.sun.com/smi/Press/sunflas...0050602.1.html. Or
better yet, contact your local sales representative for more details.

If you have any questions or feedback, please send a message to
ecampaignteam@sun.com.

Sincerely,

Scott McNealy
CEO and President
Sun Microsystems, Inc.