When we look at building a production VMware environment, whether it is for server or VDI virtualisation we look at an expensive and complex SAN to support the large volume of data required and the high speed reads needed to ensure our VMs perform.
Tintri have taken an alternative approach with a solution designed as a storage system built for VMs, the appliance connects to the hosts using NFS over 10G ethernet, no complexity of multiple VMs across LUNs, just 8.5TB of storage available to the hosts connected and managed directly from vCentre Server. The use of both 1TB of flash storage and spinning media with inline deduplication the system is designed to provide the highest level of performance with high volumes of IOPS and ensuring the most use of flash storage.
The current solutions are 8.5TB in capacity in a 4U package, the next release in September provides replication too.
Take a look at www.tintri.com it could be exactly what you are looking for.