Quoting from the Virtual Iron official announcement:

Virtual Iron Software, a provider of server virtualization and virtual infrastructure management software, today announced that DataCore Software’s SANmelody virtual storage solutions are now certified for use with Virtual Iron.

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SANmelody software converts PC servers into cost-effective disk servers and virtual SANs. Their capacity appears as additional internal drives to disk-starved servers on LANs or SANs. Simple, low-cost networked storage combined with virtual infrastructure enables benefits such as no downtime maintenance, automatic capacity management, and business continuity without spare hardware…