Quoting from the Virtual Iron official announcement:

Virtual Iron Software, a provider of software solutions for creating and managing virtual infrastructure in the data center, today announced the launch of its Channel One program for value-added resellers, systems integrators and consulting firms. ... Virtual Iron has already secured a number of charter members in the Channel One Program in North America, Europe and Asia, including:

• Akibia
• Compsat
• Continental Resources
• Enterico
• Dataline
• Enterprise Linux/ Datum UK
• Foedus
• Logics One
• Mandarin
• Nissho Japan
• NSI
• Precision Systems
• ProServe IT
• Prosper Intelligence
• Sigmanet
• Virtualize IT

It's worth to note here Virtual Iron saved a larger number of partners than XenSource at its program launch, despite the fact both companies product is based on the same engine: Xen. It's also worth to note Virtual Iron is already trying to permeate the asian market while its competitor chosen partners only in North America and Europe.