MAYNARD, Mass., and PALO ALTO, Calif., Dec. 4 /PRNewswire/ -- Stratus Technologies, Inc., a leader in IT technology and services for continuous availability, and XenSource, Inc., the leader in infrastructure virtualization solutions based on the open source Xen(TM) hypervisor, today announced they have signed a collaborative agreement with the goal of fusing continuous availability and virtualization technologies to create new IT infrastructure solutions with superior reliability, flexibility and manageability.

(Logo: http://www.newscom.com/cgi-bin/prnh/20060313/NEM014LOGO )

Under terms of the non-exclusive agreement, Stratus will work with XenSource to include XenEnterprise as an integral component in Stratus' Continuous Processing(R) architecture; XenEnterprise is XenSource's commercial version of open source Xen. Stratus' Intel processor-based server lines for Windows and Linux operating environments are already compatible with several current virtualization products, and future support is planned for other products, as well.

"The industry spotlight is on virtualization, and XenSource is clearly one of the principal contributors to the technology's rapid market adoption," said Tim Wegner, general manager, Stratus Advanced Technology Group. "The recent introduction of XenEnterprise, as well as the expansion of XenSource's technology and business development operations to Redmond, Washington are indications that the company has the potential to change the server virtualization landscape and to help fuel market expansion. We're very pleased to be working with them on next-generation infrastructure solutions."

"Improved business continuity and operational simplicity are keys to providing our customers with flexible IT infrastructures," said XenSource CEO Peter Levine. "These same attributes are at the heart of Stratus' commitment to technology for continuous availability, and its 26-year record of delivering it. The integration of XenEnterprise into Stratus' mission critical environments indicates the broad applicability and stability of the XenSource product line."

About XenSource

XenSource, Inc. develops the leading enterprise grade platform virtualization solution, XenEnterprise(TM), based on the industry's highest-performance virtualization technology, the open source Xen(TM) hypervisor. Founded and run by the Xen development team, XenSource products allow enterprises to realize the TCO savings that result from server consolidation, increased utilization, and reduced complexity in the datacenter. For more information, visit http://www.xensource.com/.

About Stratus Technologies

Stratus Technologies is a global solutions provider focused exclusively on helping its customers achieve and sustain the availability of information systems that support their critical business processes. Based upon its 25 years of expertise in server and services technology for continuous availability, Stratus is a trusted solutions provider to customers in manufacturing, life sciences, telecommunications, financial services, public safety, transportation & logistics, and other industries. For more information, visit http://www.stratus.com/.

All rights reserved.

Stratus and Continuous Processing are registered trademarks of Stratus Technologies Bermuda Ltd. The Stratus Technologies logo is a trademark of Stratus Technologies Bermuda Ltd. XenSource, Xen and XenEnterprise are trademarks of XenSource, Inc.

All other marks are the property of their respective owners. Contacts: Ed Marshall Ken Donoghue Heather Fitzsimmons Beaupre & Co. Stratus Technologies Mindshare PR Public Relations 978-461-7269 650-323-3045 603-559-5816 ken.donoghue@stratus.comheather@mindsharepr.comemarshall@beaupre.com

CONTACT: Ed Marshall of Beaupre & Co. Public Relations, +1-603-559-5816,
emarshall@beaupre.com, for Stratus Technologies; or Ken Donoghue of Stratus
Technologies, +1-978-461-7269, ken.donoghue@stratus.com; or Heather
Fitzsimmons of Mindshare PR, +1-650-323-3045, heather@mindsharepr.com, for
Stratus Technologies

Web site: http://www.stratus.com/
http://www.xensource.com/