Few months ago I discovered a product that can save company expanses and provides , very good NAS/ISCSI solution that allows running various industry-leading solutions like VMware ESX and ESXi, Microsoft Hyper-V Server 2008

StarWind Enterprise Server is reliable a software application that can be installed on Windows server and turn it into a scalable SAN .
Now you can enjoy all storage benefits like

• Synchronous Data Mirroring:
• Storage replication over WAN:
• Snapshot capabilities
• High Availability server clustering
• Efficient disks Thin Provisioning:

The upcoming 5th version will provide the customers with more solutions, the one I’m really excided about is the Highly Available automated failover on a per-volume basis it eliminates single point of failure and provides better solution for your infrastructure.

Since traditional HA SAN systems are very expensive , I recommend giving StarWind Enterprise Server a chance . It is an enterprise-class fault tolerance and protection product without the high price and complexity of proprietary vendor solutions.

More info can be found on vendor site : http://www.starwindsoftware.com/starwind-enterprise-server