DataCore (www.datacore.com) storage virtualization software provides a simple, high availability solution to VMware shared storage requirements. It makes non-disruptive, metro-wide, workload migration, failover and load balancing practical, while yielding the fastest performance and fullest utilization of disks.
Solutions include:
SANmelody
SANmelody Lite
SANsymphony
Virtual San Appliance
Traveller CDR