Yes, I know this is a very old news (November 2003) but just discovered and seems interesting enough to publish it:
Egenera Inc., the leader in next-generation datacenter infrastructure, today announced an alliance with VMware, the global leader in virtual infrastructure software for Intel®-based systems. Under the terms of the agreement, Egenera will offer customers VMware GSX Server bundled with the EgeneraTM BladeFrame® system and will fully support the solution.
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“With its innovations in PAN architecture, Egenera has moved the systems market into its next generation,” said Peter Sonsini, senior director of alliances, VMware. “Combining VMware’s virtual computing technology with the BladeFrame system enables enterprise customers to improve resource utilization, consolidate servers and streamline administration to lower total cost of ownership”.
Looking at Egenera website you’ll notice they also have a cooperative alliance with EMC, among others.