VMware vSphere Storage Appliance is a software-based shared storage solution that enables high availability and automation in vSphere without shared storage hardware.
 

End of Availability

VMware is announcing the End of Availability of all vSphere Storage Appliance versions, effective April 1, 2014. After this date you will no longer be able to purchase this product.  
 

All support and maintenance for vSphere Storage Appliance 5.5 will be unaffected and will continue to follow the Enterprise Infrastructure Support Policy.  
 

The End of General Support life date for customers with vSphere Storage Appliance 5.5 remains September 19, 2018. Support contracts can be renewed beyond End of Availability until End of General Support.  
 

Customers interested in moving to a new VMware software-defined storage solution may elect to upgrade to VMware vSAN. For more information on how to upgrade to VMware vSAN contact your VMware Sales Representative or VMware Reseller.