One of the biggest IT costs for a small and midsize business is shared storage, like a NAS or a SAN. Even the most entry-level of SAN’s can cost $10K and up to purchase, plus usually another couple thousand dollars to get it deployed and learn how to use it. For a lot of small businesses, that’s their entire yearly IT budget.
The problem is that shared storage is absolutely needed to get the most out of a modern virtualized environment. Key vSphere features like vMotion, High Availability (HA), and Fault Tolerance (FT) all require some sort of shared storage. So what do you do if you don’t have that $10K or more to buy a shared storage device? You get a VMware vSphere Storage Appliance (VSA) instead! The VSA is software that turns your vSphere Hosts’ (servers) internal hard drives into a highly available (99.9%) redundant shared storage device.
